DEVICE AND METHOD FOR IMPROVING THE REPRODUCIBILITY OF IMAGE CAPTURES.

Abstract

A device and method are provided to improve the reproducibility of image captures.The device comprises a guidance device (1) configured to guide at least one object (2) in an object plane (a); at least one drive device (3) configured to transport the object (2) in the object plane (a) in a transport direction (8); an image plane (5); at least one contact image sensor comprising at least one light source (4) for illuminating the object (2); a plurality of rod-shaped lenses (6) arranged between the object plane (a) and the image plane (5) and in a row along a direction transverse to the transport direction (8) of the object (2); and at least one light-sensitive in-line pixel array (7) arranged in the image plane (5); a control device (9) configured to control at least one of the light source (4) and the light-sensitive in-line pixel array (7) and to capture a signal generated by the light-sensitive in-line pixel array (7).Light emitted by the light source (4) may be at least partially scattered by the object (2) towards the rod-shaped lenses (6), reflected by the rod-shaped lenses (6), and incident on at least a region of the light-sensitive in-line pixel array (7). The photosensitive in-line pixel array (7) may comprise a plurality of one-dimensional in-line pixel arrays (7a, 7b), each of which extends along the transverse direction to the transport direction (8) of the object (2), arranged parallel to and adjacent to each other. Each in-line pixel array (7a, 7b) may comprise a length transverse to the transport direction (8) of the object (2) that completely covers the object (2) to be captured.

Description

DEVICE AND METHOD FOR IMPROVING THE REPRODUCIBILITY OF CAPTURES OF IMAGES The invention relates to a device and a method for improving the reproducibility of image captures, by which it is possible to reduce or eliminate the moiré effect. The moiré effect is an optical phenomenon in which the superposition of rasters or periodic patterns results in a raster or pattern that is itself periodic, comprising special structures not present in any of the individual rasters. These structures vary when the superposition method changes. This effect can occur when at least two rasters are superimposed, which can be relatively subtle. It is a type of optical interference that can create certain patterns that generally have a rather harsh appearance. The moiré effect can be compared to an optical illusion. The moiré effect can occur in image processing whenever two or more patterns are superimposed, for example, when capturing an image of a banknote using at least one image sensor and capturing subjects with a periodic structure. An image sensor can also record individual pixels based on a specific raster. Three periodic patterns can be found in banknote processing. For example, a banknote might consist of locally parallel lines. For example, when processing banknotes, periodic scanning can occur in the transport direction. Additionally, periodic scanning can occur in the online direction. Due to the locally parallel lines and periodic scanning in the transport direction, a moiré effect can occur if, for example, a scan is incomplete. Due to the local parallel lines and periodic scanning in the online direction, for example, no moiré effect is generated if a scan in the online direction has no or only very small, insignificant gaps. In each of Fig. 1A, Fig. 1B, and Fig. 1C, a 100-euro 50-euro banknote (always the same one) is shown, which has been photographed or captured in three different positions using an image sensor, for example, a conventional contact image sensor. For example, a 100-euro 50-euro banknote has a plurality of linear structures extending in one direction beneath the arched bridge depicted on it; see arrows 102a and 102b in Figure 1A, Fig. 1B, and Fig. 1C.If a 50 euro banknote is viewed, for example, by means of a banknote scanner or reader, when the banknote is moved at an angle, for example, at angles different from its direction of travel, and / or with different scans, the moiré effect can arise as an interaction between structures located on the subject and the scanning structure, which at least one image sensor, for example, a conventional contact image sensor of a scanner, has, in very different patterns (see, for example, arrows 102a and 102b in FIG. 1A, FIG. 1B and FIG. 1C). Due to the different angles or small displacements of the scan at which the 50 euro banknote is captured by the image sensor, different unwanted moiré effect patterns are formed in each case.If the 50 euro banknote now has an image with a fine pattern, the image sensor capture pattern and the pattern created by the fine banknote pattern interfere with each other. The differences in Fig. 1A, Fig. 1B, and Fig. 1C occur primarily due to the different banknote tilts that often occur in practice and / or the different scanning frame phases, resulting in periodic lines and a pixel area that is too small compared to the scanning pitch. In principle, pixels that are too large compared to the scanning pitch can also cause moiré effects. As a result, the measurements are not reproducible because, in certain regions of the captured image, a point may be measured as dark at one moment and light at another, even if the capture conditions, such as skew or different phases of the scanning screen for periodic lines, change only slightly and are therefore uncontrollable. Furthermore, PGB color values ​​may not be measured in the same position due to time-multiplexing at, for example, 100 dots per inch (dpi), which can reduce the accuracy of tone measurements, such as specks in the captured image. Additionally, a Nyquist criterion may not be met in a particular direction of travel on a banknote, for example, with a resolution of 50 dpi captured at various skews, which can result in low accuracy in the printed area. Consequently, the reproducibility of the captures cannot be guaranteed.? of images, for example, of banknotes. Therefore, there is a need for a device and method to improve the reproducibility of image captures capable of reducing or even eliminating an unwanted moiré effect when forming images of at least one banknote, for example. In particular, the device and method are intended to enable the formation of moiré-free images of, for example, banknotes. Furthermore, the device and method described herein should make it possible to reproduce moiré-free banknote images by adapting the scanning direction. The reproducibility of the image should be improved by means of the device and method described herein. The independence of banknote images from different tilts and / or different scanning locations will be achieved by means of the device and method described herein.Using the device and method described in this document, a variety of recording modes can be configured. Using the device and method described in this document, a larger scanning area can be achieved. Using the device and method described in this document, the reproducibility of banknote image formation can be improved. Furthermore, using the device and method described in this document, the signal-to-noise ratio can be improved. Various realizations provide a device and a method for improving the reproducibility of image capture. Various embodiments provide a device for improving the reproducibility of image capture. The device may comprise a guide device configured to guide at least one object in an object plane. The device may further comprise at least one drive device configured to transport the object over the guide device in the object plane in a transport direction. The device may comprise an image plane. The device may comprise a contact image sensor comprising at least one light source for illuminating the object. The light source may be time-division multiplexed so that different wavelengths are emitted at different times in UV, visible light, infrared, or combinations thereof. The light source may be located on the same side with respect to the object plane, for example, in the case of reflected light measurement, and / or on the opposite side, for example, in the case of transmitted light measurement, as the image plane. The transmitted light measurement may be a bright-field and / or dark-field configuration. The contact image sensor may comprise a plurality of rod-shaped lenses arranged between the object plane and the image plane and in a row along a direction transverse to the object's transport direction.The contact image sensor may comprise at least one light-sensitive in-line pixel array arranged in the image plane. The device may comprise at least one control device configured to control at least one light source and the light-sensitive in-line pixel array, and to capture a signal generated by the light-sensitive in-line pixel array. Light emitted by the light source may be scattered at least partially from the object towards the bar-shaped lenses, an image may be generated by the bar-shaped lenses, and the light may be incident on at least a region of the light-sensitive in-line pixel array. The photosensitive in-line pixel array may comprise a plurality of one-dimensional in-line pixel arrays.Each of the in-line pixel arrays can extend along the direction perpendicular to the object's transport direction, be parallel to each other, and be arranged side by side. Each in-line pixel array can comprise a length perpendicular to the object's transport direction that completely covers the object to be captured. In various embodiments, the light source may be on the same side (incident light measurement) and / or on the opposite side (transmitted light measurement) with respect to the object plane as the image plane. The transmitted light measurement may be a brightfield and / or darkfield configuration. In various embodiments, the light-sensitive in-line pixel array may comprise at least one in-line pixel array of photodiodes. In several embodiments, the number of inline pixel sets may be less than the number of pixels in each inline pixel set. In various embodiments, a contact image sensor may comprise an in-line pixel array having, for example, approximately 800 pixels in a line and may comprise, for example, two lines. In various realizations, the object can be a value, such as a banknote or a check. In several embodiments, the device can be a valuables reader, such as a banknote and / or check reader. In several embodiments, the drive device may comprise a plurality of rollers and at least one drive motor. The drive motor may be configured to drive at least one roller, such as a drive roller, so that at least one object may be driven along the transport direction in the guide device in the plane of the object and transported by means of guide rollers. In various embodiments, the at least one light source may be a light-emitting diode (LED) light source, such as a monochromatic LED or an RGB LED for color illumination of an object in the plane of the object. In various embodiments, the light source may comprise a plurality of light sources in a direction perpendicular or transverse to a transport direction. In various embodiments, the at least one light source may comprise at least one light-emitting diode bar. In various embodiments, at least one light source can be configured as a light guide with a light output that can be fed laterally with LEDs of different wavelengths. In several embodiments, a rod-shaped lens can be, for example, a cylindrical lens. In several embodiments, at least one rod-shaped lens can be formed as a gradient-index lens. The at least one rod-shaped lens can have a cylindrical shape, in which the two end surfaces can be polished and the peripheral surface can be optically irrelevant. In various embodiments, a rod-shaped lens can contain several optical materials, such as fused silica glasses, as well as crystalline or plastic materials. Rod-shaped lenses can have diameters ranging from approximately 0.1 mm to 2 mm and lengths ranging from 2 mm to 50 mm. In various embodiments, a rod-shaped lens may have at least a simple structure for easy handling and can be coated with various materials. In several embodiments, at least one rod-shaped lens can be configured as a SELFOCD microlens, such as a plane gradient index lens. The change in refractive index of the material can be achieved through ion exchange. In several embodiments, at least one lens can be configured as a linear array of gradient index lenses or as a plurality of parallel arrays. In several embodiments, a rod-shaped lens can form an image of a strip of objects in the object plane onto an image strip in the image plane. In various embodiments, a one-dimensional online pixel array can be a photosensitive CI4OS array. In various embodiments, a one-dimensional online pixel array can be a CCD array 1 otosensitive1e. In various embodiments, the contact image sensor and / or photosensitive in-line pixel array can comprise a compact design with a resolution of up to approximately 600 dpi. The resolution of a linear array can be determined using a pixel pitch. In several embodiments, the device may also include a housing. In various embodiments, at least one light source can operate using time-multiplexed illumination. In other words, for example, it can be illuminated with blue during the first time step, green during the second, red during the third, and infrared during the fourth. During each illumination step, a line, such as a CMOS or CCD line, can measure at least one pixel value and export the received data in analog or digital form, for example, to a control device and / or memory. In various embodiments, the contact image sensor and / or the in-line photosensitive pixel array may comprise at least two photosensitive lines. The two lines may operate independently or jointly, for example, by means of a control device. In other words, the control device may supply and operate a first row with a supply voltage or current. The control device may supply and operate a second row with a supply voltage or current. The control device may operate the first and second rows individually. For example, the control device may turn off or ground a row to ground potential to save energy. However, three, four, five, or even more rows may be provided. In various embodiments, the contact image sensor and / or photosensitive inline pixel array may comprise a resolution of approximately 50 dpi or 100 dpi or 200 dpi and may operate at various resolutions. In various embodiments, a device may comprise at least a plurality of contact image sensors, such as at least a pair of contact image sensors. The contact image sensors may be arranged side-by-side along an object's transport direction. Each of the contact image sensors may be of a width such that each captures or completely covers an object to be inspected, such as a check or banknote. The at least one pair of contact image sensors may operate by means of reflected light. In various embodiments, the contact image sensor and / or the photosensitive line pixel array may comprise a resolution of approximately 100 dpi or 200 dpi or 300 dpi or 600 dpi and may operate at various resolutions. In several embodiments, the contact image sensor and / or the photosensitive in-line pixel array can be operated using an analog binning process. In an analog binning process, a charge collected in the quantum wells can be physically combined by a plurality of pixels. In an analog binning process, the capacitances can be connected in parallel and read by a control device, for example. In the devices and methods described herein, the analog binning method is preferably used. Through the analog binning method, data reduction can be achieved because fewer pixels need to be read. Furthermore, through the analog binning method, the reading time of a line can be shortened, and the amount of data can be reduced, which can decrease the memory and computing power requirements. In addition, analog binning improves the serial-to-noise ratio. In various embodiments, the contact image sensor and / or the photosensitive in-line pixel array can operate using a digital binning process. In a digital binning process, pixel values ​​can be read from the pixels, digitized, summed, and, for example, optimally averaged. In various applications, the contact image sensor and / or the photosensitive inline pixel array can operate using a physical clustering process, for example, to achieve data reduction. In the physical clustering method, fewer pixels need to be read, which can shorten the line reading time and reduce the amount of data, thus reducing the need for memory and computing power. For example, in various implementations, they can be combined The pixels in a 600 dpi contact image sensor and / or a photosensitive inline pixel array in a 200 dpi mode. As a result, such a line read time can typically be three times shorter and, therefore, banknotes can be transported faster in a device described in this document. In several implementations, a resolution of 200 dpi may be required for check processing in accordance with standards and regulations. In several embodiments, the control device can read each line individually or a plurality of lines approximately simultaneously. In several embodiments, a line can be configured as a CMOS line scanning camera. In several embodiments, moiré-free captures can be made using a 200 dots per inch contact image sensor and / or a photosensitive inline pixel array when a line is operated in 100 dpi mode using a grouping process and scanning in the transport direction, also performed at a resolution of 100 dpi. In several areas, using a 600 dpi contact image sensor and / or an in-line pixel array, if a resolution of 300 dpi, 200 dpi, 100 dpi, etc., results in a line through a binning process, moiré - it may be possible to scan freely at the same resolution as in the In several embodiments, the control device may comprise a memory in which at least one pixel value can be stored from a plurality of pixel values ​​from at least one row and / or both rows. In several embodiments, the plurality of one-dimensional online pixel sets can be fixed in place, for example, in a device housing, and the object, for example, a check or banknote, can be transported in a narrow space, for example, in a range of values ​​from about 0.1 mm to about 5 mm, for example, in a range of values ​​from about 0.15 mm to about 3 mm, for example, in a range of values ​​from about 0.2 mm to about 1.5 mm. In various embodiments, the depth of field of a contact image sensor and / or a photosensitive inline pixel array may be in a range of values ​​from approximately 0.05 millimeters to approximately 5 millimeters, for example, in a range of values ​​from approximately 0.075 millimeters to approximately 3 millimeters, for example, in a range of values ​​from approximately 0.1 millimeters to approximately 1.6 millimeters. Several embodiments provide a device for improving the reproducibility of the captures, wherein each in-line pixel array comprises a plurality of pixels, and each pixel comprises at least one photodiode, such as a photosensitive photodiode, of CMOS design to capture a pixel value of light emitted by the light source. In various embodiments, the contact image sensor and / or the photosensitive in-line pixel array can be configured comprising two one-dimensional in-line pixel arrays or lines, each comprising a plurality of pixels. In various embodiments, the oe control device can be configured to read at least one pixel value by controlling at least one pixel in a one-dimensional pixel array. In several embodiments, the control device may comprise at least one process and / or one field-programmable gate array (FPGA). In several areas, the contact image sensor and / or the photosensitive in-line pixel array can be configured to comprise a two-dimensional pixel array line, each pixel of which can be individually controlled by means of the device. Various embodiments provide a device for improving the reproducibility of the capture, in which at least a first in-line pixel array and a second in-line pixel array of the plurality of in-line pixel arrays are constructed identically. The first in-line pixel array and the second in-line pixel array may comprise the same number of pixels. The pixel size of the pixels in the first in-line pixel array and the second in-line pixel array may be approximately the same, for example, the same size. Various embodiments provide a device for improving the reproducibility of captures, wherein at least a second in-line pixel array of the plurality of in-line pixel arrays in the object's transport direction is made longer, for example, by a factor of 10, or by a factor of 7.5, than a first in-line pixel array of the plurality of in-line pixel arrays in the object's transport direction. Several embodiments provide a device for improving the reproducibility of captures, in which at least one pixel in at least one inline pixel array is configured to be wider in the transport direction than a pixel in at least one other inline pixel array. For example, a first row may comprise a plurality of pixels of the same size. An adjacent row may comprise pixels of different widths, such as pixels that are twice as wide as the pixels in the first row. For example, a second row may comprise a sequence of pixels of: a pixel with a pixel width of two pixels, a pixel with a pixel width of one pixel, a pixel with a pixel width of one pixel, a pixel with a pixel width of two pixels. This sequence may be repeated in the second row. In a third row, a pixel may comprise a pixel width of: a pixel with a pixel width of three pixels.This pixel width can be repeated in the third row. In a fourth row, a pixel can have a pixel width of six pixels. This width can be repeated in the fourth row. Various embodiments provide a device to improve the reproducibility of captures, in which at least one pixel in at least one in-line pixel array can be wider than a pixel in at least one other in-line pixel array. For example, a pixel in a first inline pixel array may be wider relative to a corresponding pixel in a second inline pixel array by, say, a factor of approximately 1.5 to approximately a factor of 3.5, or a factor of 2.5n. In other words, a pixel width in a first row may be twice as wide relative to a pixel width in a second row. Various embodiments provide a device to improve the reproducibility of captures in which the sensitivity can be approximately constant, for example, constant, throughout the transport distance. Various embodiments provide a device for improving the reproducibility of the captures, wherein the control device is further configured to operate the first in-line pixel array and the second in-line pixel array independently of each other, and wherein the control device is configured to connect the second in-line pixel array to the first in-line pixel array and vice versa. Online pixel arrays comprise a resolution of 200 dpi in the direction transverse to the transport direction. Various embodiments provide a device for improving the reproducibility of the captures, wherein an in-line pixel array (7a) comprises a resolution of 200 dpi in the direction transverse to the transport direction (8) and a second in-line pixel array (7b) comprises a resolution of 100 dpi in the direction transverse to the transport direction (8). Various embodiments provide a device for improving the productivity of the capture, wherein a pixel of the plurality of in-line pixel arrays has a size in a range of values ​​of approximately 150 micrometers by approximately 150 micrometers, for example, in a range of values ​​of approximately 130 micrometers by approximately 130 micrometers, for example, in a range of values ​​of approximately 127 micrometers by 127 micrometers. Several embodiments provide a device to improve the reproducibility of the captures, wherein the control device is further configured to, in the case that the object is at least a check, set a resolution of the first inline pixel array to 200 dpi, disable the second inline pixel array, control the first inline pixel array, and read the pixel values ​​from the first inline pixel array. Several embodiments provide a device for improving the reproducibility of the captures, wherein the control device is further configured, in the case that the object is at least one check, to reduce the speed of at least one check in the transport direction by means of a transport device so that a check can be transported more slowly in the transport direction to achieve, for example, a resolution of 200 dpi in the transport direction. Several embodiments provide a device for improving the reproducibility of the captures, wherein the control device is further configured, in the case that the object is at least one banknote, to set a resolution of the first and second online pixel arrays to 100 dpi, to activate the first and second online pixel arrays, to activate at least one charge collected in quantum wells of two adjacent pixels in the first online pixel array, physically combining and reading pixel values, physically combining and reading pixel values ​​of at least one charge collected in quantum wells of two adjacent pixels in the second online pixel array corresponding to the two adjacent pixels in the first online pixel array, and providing a pixel value based on the read pixel values ​​for further processing. 23 Various realizations provide a device to improve the reproducibility of the captures, in which the control device is configured to establish a resolution of the first in-line pixel array and the second in-line pixel array at a value between approximately 90 dpi and approximately 130 dpi, for example, about 100 dpi. Several embodiments provide a device for improving the reproducibility of captures, in which the control device is configured to combine pixel values ​​from two adjacent pixels of a first in-line pixel array and at least one pixel value from an adjacent pixel of a second in-line pixel array, using an analog grouping method and to provide a pixel value based on the combined pixel values ​​for further processing. Several areas provide a device to improve the reproducibility of captures, in which the control device is configured to combine two pixel values ​​from two adjacent pixels of a first in-line pixel array and one pixel value from an adjacent pixel of a second in-line pixel array using a three-way analog grouping method and provide a pixel value based on the combined pixel values ​​for further processing. Several embodiments provide a device for improving the reproducibility of the capture, wherein the control device is further configured to combine pixel values ​​of two adjacent pixels of the first in-line pixel array and pixel values ​​of two adjacent pixels of the second in-line pixel array corresponding to the two adjacent pixels of the first in-line pixel array using a 2x2 analog binning method, and to provide at least one pixel value based on the combined pixel values ​​for further processing. Various implementations provide a device to improve the quality of the captures, where greater sensitivity to light per virtual pixel can be achieved and the signal-to-noise ratio can be improved. Several embodiments provide a device for improving the reproduction of the captures, wherein the control device is further configured to allow the first and second in-line pixel arrays to read at least a first pixel value from the first pixel of the first in-line pixel array and a first pixel value from the first pixel of the second in-line pixel array, and to read at least a second pixel value from the second pixel of the first in-line pixel array and a second pixel value from the second pixel of the second in-line pixel array, and in each case calculating an average value by means of a line-average acquisition method from the first pixel values ​​and the second pixel values ​​and providing in each case a pixel value for further processing. Several embodiments provide a device to improve the reproducibility of the captures, in which the control device can be configured to switch between a resolution of 100 dots per inch and a resolution of 200 dots per inch via software during operation. Various embodiments provide a device for improving the reproducibility of captures, wherein the device comprises at least a second light source for illuminating the object. The second light source is arranged on the opposite side of the light source with respect to the plurality of rod-shaped lights, lenses, and / or the rod-shaped lenses are gradient-index rod-shaped lenses. For example, the light source may illuminate an object from an angle of approximately 50 degrees with respect to the transport plane, and the second light source may illuminate the object from an angle of approximately 60 degrees with respect to the transport plane. The second light source may be arranged symmetrically with respect to the plurality of rod-shaped lenses with respect to the light source, for example, at the same angle, within an angular range of approximately 50 to approximately 60 degrees with respect to the transport direction. Several embodiments provide a device for improving the reproducibility of captures, which may comprise a plurality of light sources. For example, the device may operate in an incident light mode in which at least one light source or a plurality of light sources are placed on the same side as the image plane and operate to illuminate at least one object that may be carried in the device. For example, the device may operate in a transmitted light mode in which at least one light source is placed and operated on a side opposite the image plane with respect to the object to transilluminate the object. The light source may operate, for example, in a brightfield transmitted light mode. For example, the light source may operate in a darkfield transmitted light mode. In other words, at least one light source.It can be arranged on the same side (incident light measurement) as the image plane with respect to the object plane and / or at least one light source can be arranged on the opposite side (transmitted light measurement). ) like the image plane. Various embodiments provide a device to improve the reproducibility of the captures, in which the rod-shaped lenses can be gradient index rod-shaped lenses. Various embodiments provide a device for improving the reproducibility of captures, wherein the device comprises a plurality of rows of rod-shaped lenses arranged in series, wherein the rows of rod-shaped lenses are arranged parallel to each other, and wherein the rows are each arranged transversely to the transport device. Various embodiments provide a device for improving the reproducibility of captures, in which at least one first row of the plurality of rod-shaped lens rows is arranged next to at least one other row of the plurality of rod-shaped lenses, in which the first row of rod-shaped lenses and the additional row of rod-shaped lenses are arranged in a direction transverse to the transport direction of the object at a predefined distance, for example in a range of values ​​of approximately 1 micrometer, for example at a distance of 2 micrometers, for example at 4 micrometers, for example at 7 micrometers, for example at 9 micrometers, and is arranged at a predefined distance, for example at approximately half the diameter of a rod-shaped lens, for example in a range of values ​​of about 100 micrometers to about 200 micrometers.for example, from 130 micrometers to about 170 micrometers, for example at a distance of about 150 micrometers, transversely to the transport direction between each other, and / or at least one space between a lens-shaped rod and an adjacent rod-shaped lens is filled with at least one filler material, for example, black silicone wax or black silicone resin, wherein the black color can prevent light from the object from falling through the gaps onto the pixel array or light from a rod-shaped lens from entering an adjacent rod-shaped lens. From a bar-shaped lens of a first row to a bar-shaped lens of a second row has a range of values ​​from approximately 0 millimeters to approximately 5 millimeters. Several implementations provide a method for improving the reproducibility of the captures Several embodiments provide a method for improving the reproducibility of the captures. The method comprises guiding at least one object in an object plane by means of a guiding device. The method comprises transporting the object in the object plane in a transport direction by means of at least one drive device. The method comprises illuminating the object by means of at least one light source of a contact image sensor. The method comprises at least partially scattering light emitted by the light source from the object towards a plurality of rod-shaped lenses of the contact image sensor. The method comprises obtaining images of at least a fraction of the light scattered by the object, by means of the plurality of rod-shaped lenses arranged between the object plane and an image plane and in a row along a direction transverse to the transport direction of the object.The method comprises capturing the light reflected by rod-shaped lenses by means of at least one photosensitive in-line pixel array of the contact image sensor. The method comprises controlling at least one light source and the light-sensitive in-line pixel array by means of a control device, wherein the light-sensitive in-line pixel array comprises a plurality of one-dimensional in-line pixel arrays, each extending along the transverse direction to the object's transport direction, arranged parallel to and adjacent to each other, and wherein each set of in-line pixels has a length transverse to the object's transport direction that completely covers the object to be captured. The method comprises capturing the light reflected by rod-shaped lenses by means of at least one region of a photosensitive in-line pixel array arranged in the image plane.The method comprises merging at least individual pixel values ​​from a plurality of one-dimensional online pixel arrays. The method comprises providing a pixel value for further processing by the control device. The method for improving the reproducibility of the captures can be configured to operate the light source in a time-division multiplexed manner. The method for improving the reproducibility of the capture can be configured to sequentially illuminate the object with a plurality of colors and / or infrared and / or ultraviolet. The fusion of at least individual pixel values ​​by the method may comprise, for example, fusion by means of an analog binning method. Fusion by means of an analog binning method may comprise, for example, 2x2 binning in which two pixel values ​​from a first in-line pixel array and two pixel values ​​from a second in-line pixel array are merged. Fusion by means of an analog clustering method may comprise, for example, a three-way clustering method in which the pixel values ​​of two adjacent pixels in a first in-line pixel array and the pixel value of a corresponding pixel in a second in-line pixel array are merged. The fusion of at least individual pixel values ​​by the method may comprise, for example, digital fusion, such as digital clustering. The method for improving the reproducibility of the captures may include, in case the object is at least a check, setting a resolution of the first inline pixel array to 200 dpi using a control device, disabling the second inline pixel array using a control device, controlling the first inline pixel array using a control device, and reading pixel values ​​from the first inline pixel array using a control device. The method for improving the reproducibility of the captures may include, in the case that an object is at least one banknote, setting a resolution of the first in-line pixel array and the second in-line pixel array to 100 dpi by means of the control device, activating the first and second in-line pixel arrays by means of the control device, physically combining at least one charge collected in potential wells of two adjacent pixels in the first in-line pixel array and reading pixel values ​​by the control device, physically combining at least one charge collected in potential wells of two adjacent pixels in the second in-line pixel array corresponding to the two adjacent pixels in the first in-line pixel array, and reading pixel values ​​by the control device.and provide a pixel value based on the pixel values ​​read for further processing by the control device. The method for improving the reproducibility of the captures may include combining pixel values ​​from two adjacent pixels: from the first in-line pixel array and at least one pixel value from an adjacent pixel of the second in-line pixel array using an analog or digital crowding method, by a control device, and providing a pixel value based on the combined pixel values ​​for further processing by a control device. The method for improving the reproducibility of the captures may comprise activating the first and second online pixel arrays by means of a control device, reading at least one first pixel value from the first pixel of the first online pixel array and one first pixel value from the first pixel of the second online pixel array by means of a control device, reading at least one second pixel value from the second pixel (7a_2) of the first online pixel array (7a) and one second pixel value from the second pixel (7b_2) of the second online pixel array (7b) by means of a control device, and calculating a respective average value by means of a line averaging acquisition method from the first and second pixel values ​​by means of a control device, and providing a respective pixel value for further processing by means of a control device.and / or changing in function between a resolution of 100 dots per inch and a resolution of 200 dots per inch by means of software and / or by means of a control device. The term analog binning, as used here, refers to a process in which the charge that can be collected in quantum wells of two or more pixels is physically combined. With analog binning, the read speed of a line can be reduced. The term digital binning as used herein refers to a process in which the values ​​of individual pixels are read, digitized, summed, and possibly averaged. As used herein, the term line-averaging acquisition mode refers, for example, to a mode of operation of a control device described herein and a device and / or method described herein. In line-averaging acquisition mode, line acquisition can be performed when both a first and a second line of a contact image sensor are exposed. When the acquisition of a first and a second line is complete, the pixel values ​​of the first line and the pixel values ​​of the second line can be averaged, or more specifically, an average can be generated. The average can be performed as follows: the value of pixel 1 in a first row A is added to the value of pixel 1 in a second row B, and the sum of the pixel values ​​is divided by 2. The result can be rounded.The value of pixel 2 in the first line A is added to the value of pixel 2 in the second line B, and the sum of the pixel values ​​is divided by 2. The result can be rounded. The value of pixel 3 in the first line A is added to the value of pixel 3 in the second line B, and the sum of the pixel values ​​is divided by 2. The result can be rounded, and so on. The averaged values ​​can then be transmitted to the contact image sensor for further processing as if they came from a single line. The devices and methods described in this document can provide moiré-free sensor data, which are the basis for the reliable detection of stains, graffiti, and other defacements. Graffiti is being written on banknotes. Because the reproducibility of the measurement is improved with the method described in this document, fine banknote structures, such as serial numbers, transparent registers, barcodes, clear text, micro-perforation, microprinting, Omron rings, fine cracks, and tone measurements, can be captured more accurately. As used in this document, the term CMOS or Complementary Metal-Oxide Semiconductor refers to semiconductor devices in which p-channel and n-channel MOSFETs can be used on a common substrate. Additionally, a charge-coupled device array (CCD array) can also be used. The term Contact Image Sensor (CIS), as used herein, refers to a low-cost, CMOS-based image sensor technology. A Contact Image Sensor is typically a line sensor in which a plurality of light-sensitive points or pixels are arranged in a row. Above each of these points, there may be a small plastic lens. One lens may cover a plurality of pixels, and / or a pixel may collect light from a plurality of lenses. Illumination of the object to be captured is generally provided by light source LEDs mounted parallel to the sensors; in the case of color scanners, by RGB light source LEDs. For image capture, the sensor may require near-direct contact with the original. The achievements mentioned above and the advantages indicated relate to the device and method for improving the reproducibility of the captures. Examples of embodiments of the invention are shown in the figures and explained in more detail below. They are shown: FIG. 1A, the figure. IB, the figure. 1C, schematic illustrations of a moiré effect based on a banknote; FIG. 2, a schematic diagram of a device for improving the reproducibility of captures according to various realizations; FIG. 3, a schematic diagram of a device for improving the reproducibility of captures according to various realizations; FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, schematic illustrations of a part of a device and a method for improving the reproducibility of the captures according to various embodiments; FIG. 5, a schematic representation of a part of a device for improving the reproducibility of captures according to various realizations; FIG. 6, a schematic representation of a part of a device for improving the reproducibility of captures according to various realizations; and FIG. 7, a schematic flowchart that schematically illustrates a method for improving the reproducibility of captures according to various realizations. In the following detailed description, reference is made to the attached drawings which form part of this application and which show, for illustrative purposes, specific embodiments in which the invention can be put into practice. In this respect, directional terminology such as up, down, front, back, forward, etc., is used with reference to the orientation of the described figure(s). Since the components of the embodiments can be placed in several different orientations, the directional terminology is for illustrative purposes and is not limiting in any way. It is understood that other embodiments may be used and structural or logical changes may be made without departing from the scope of protection of the present invention. Furthermore, it is understood that the features of the various exemplary realizations described in this document may be combined with each other, unless specifically stated otherwise. Therefore, the following detailed description should not be interpreted in a limiting sense, and the scope of protection of the present invention is defined by the appended claims. FIG. 1A, FIG. 1B, and FIG. 1C show a schematic representation of the moiré effects on the same 100 euro banknote when a banknote reader pulls it at different angles in the direction of transport. FIG. 2 is a schematic diagram of a device 10 to improve the reproducibility of captures according to various realizations. The device 10 for improving the reproducibility of the captures comprises a guide device 1 configured to guide at least one object 2 in the object plane 1, at least one drive device 3 configured to transport the object 2 over the guide device 1 in the object plane 1 in a transport direction 8, at least one light source 4 for illuminating the object 2, an image plane 5, a plurality of rod-shaped lenses 6 arranged between the object plane 1 and the image plane 5 and in a row along a direction transverse to the transport direction 8 of the object 2, at least one light-sensitive in-line pixel array 7 of a contact image sensor arranged in the image plane 5, a control device 9 that is configured to control at least the light source 4 and / or the in-line pixel array 7 and to capture a signal generated by the in-line pixel array,where light emitted by light source 4 is at least partially scattered by object 2 towards the bar-shaped lenses 6, is reflected by means of the rod-shaped lenses 6 and contacts at least a region of the in-line pixel array 7 wherein the contact image sensor comprises a plurality of one-dimensional in-line pixel arrays 7a, 7b, each of which extends along the transverse direction to the transport direction B of object 2, arranged parallel to and adjacent to each other, and wherein each in-line pixel array 7a, 7b has a length transverse to the transport direction 8 of object 2 that completely covers the object 2 to be captured, An object 2, for example a check or a banknote, can be transported from a first side by means of the drive device 3 along the plane of the object or also in the opposite direction (bidirectional transport). The drive device 3 may comprise a plurality of rollers capable of transporting an object 2 in or against the transport direction 8. At least one roller may be driven by means of a motor. The device 10 may comprise a plurality of light sources 4, 4a, 4b, 4c, 4d. At least one light source may be used for an incident light operation, for example, light sources 4 and 4a. At least one light source may be used for a transmitted light operation, for example, light sources 4b and 4c. As object 2 travels along the transport direction 8 at a predefined speed, light sources 4, 4a emit at least one light with one or more defined wavelengths.The emitted light is partially absorbed by the object 2 located below and partially scattered or reflected in one direction towards the rod-shaped lenses 6. The light sources 4, 4a can be rod-shaped so that the light illuminates a strip of the object approximately simultaneously. Some of the scattered or reflected light is optically reflected by the rod-shaped lenses 6 onto the image plane 5, and some falls on the two adjacent one-dimensional line pixel arrays 7a, 7b, as shown for example in FIG. 2. The device 10 illustrated in Fig. 2 may comprise a light source 4. In the device 10 illustrated with reference to Fig. 2, at least one light source 4, 4a may be arranged at different angles with respect to the object plane. For example, the light source 4, 4a may be positioned at an angle with respect to the object plane in a range of values ​​from about 10 degrees to about 80 degrees, for example, in a range of values ​​from about 15 degrees to about 75 degrees, for example, at an angle of about 45 degrees with respect to the object plane. For example, the light source 4 may be positioned at an angle of about 50 degrees and the second light source 4a may be positioned at an angle of about 60 degrees with respect to the object plane. The light sources 4 and 4a may be arranged symmetrically with respect to the plurality of rod-shaped lenses.Simultaneous illumination can allow for more diffuse illumination, or time-multiplexing can allow for the evaluation of angle-dependent scattering. Device 10 can operate with incident light using at least light source 4 and / or 4a. Device 10 can also be operated by transmitted light, for example, brightfield and / or darkfield operation. For example, Device 10 can operate light source 4b in darkfield transmitted light operation. Device 10 can operate, for example, light source 4c in brightfield transmitted light operation. Light sources 4b and 4c can be arranged on a different side relative to the object plane compared to at least one of light sources 4 and 4a.For example, light source 4c, when functioning as a brightfield light source, can be arranged approximately on an optical axis of a rod-shaped lens 6, for example, approximately below the rod-shaped lens 6 shown in FIG. 2. Light source 4b can be arranged adjacent to light source 4c and on the same side with respect to the object plane. At least one of the light sources 4, 4a, 4b, and 4c can operate using time-division multiplexed illumination. The time-division multiplexed illumination method can be based on a wavelength of illumination, between incident and transmitted light, and / or with respect to an illumination angle. For example, the control device 9 can operate light sources 4a and 4b for an incident light line of 940 nanometers (nm) simultaneously. For example, the control device can also operate light source 4c for a transmitted light line of 940 nm. In other words, for example, during a first time step, the object can be illuminated with blue light; during a second time step, the object can be illuminated with green light; during a third time step, the object can be illuminated with red light; and during a fourth time step, the object can be illuminated with infrared light.During each illumination step, the two lines 7a and 7b of the photosensitive line 7 pixel array, for example, CMOS lines, can measure at least one pixel value, and the control device 9 can receive and export data in analog or digital form. The control device 9 can be located within device 10 or remotely. The guide device 1 may be configured to be transparent, for example translucent, in a partial region, for example in a transmitted light operation of the device 10. The device 10 may further comprise guides 3a and 3b for guiding an object 2. The guides 3a and 3b may be arranged opposite the guide device 1 with respect to an object 2. The guides 3a may be configured to be transparent, for example translucent, at least in a partial region, for example in a transmitted light operation of the device 10, as illustrated schematically in FIG. 2. In the region of illumination and / or optical imaging, parts of the guide device may be absent to provide illumination and / or optical imaging. The control device 9 is configured to operate the first in-line pixel array 7a and the second in-line pixel array 7b independently of each other, and to connect the second in-line pixel array 7b to the first in-line pixel array 7a, and vice versa. For example, the plurality of in-line pixel arrays 7a and 7b have a resolution in the transverse direction to the transport direction 8 of 200 dpi. A pixel of the plurality of in-line pixel arrays 7a and 7b can have a size of 127 micrometers by 127 micrometers. pixel array in line 7b, to control the first pixel array in line 7a, and to read the pixel values ​​from the first pixel array in line 7a. Control device 9 is further configured, in case object 2 is at least one banknote, to set a resolution of the first pixel array in line 7a and the second pixel array in line 7b to 100 dpi, to activate the first and second sets of pixels in line 7a, 7b, to read and combine at least two pixel values ​​from adjacent pixels 7a 1, 7a 2 in the first set of pixels in line 7a, at least two pixel values ​​from adjacent pixels 7a 1, 7a 2 in the first pixel array in line 7a, reading and combining at least two pixel values ​​from adjacent pixels 7b 1, 7b 2 in the second pixel array in line 7b corresponding to the two adjacent pixels 7a 1, 7a 2 in the first pixel array in line 7a, combining the two adjacent pixels 7a 1, 7a 2 in the first pixel array in line 7a and the two adjacent pixels combined 7b_l, 7b_2 in the second in-line pixel array 7b,and providing a pixel value based on the combined pixel values ​​for further processing. Control device 9 is further configured to combine pixel values ​​from two adjacent pixels 7a 1, 7a 2 of the first inline pixel array 7a and pixel values ​​from two adjacent pixels 7b_l, 7b_2 of the second inline pixel array 7b corresponding to the two adjacent pixels 7a_l, 7a_2 of the first inline pixel array 7a using a 2x2 analog pooling method, and to provide a pixel value based on the combined pixel values ​​for further processing. The control device 9 is further configured to activate the first and second line pixel arrays 7a, 7b, to read at least a first pixel value from a first pixel 7a 1 of the first line pixel array 7a and a first pixel value from a first pixel 7b_l of the second line pixel array 7b, reading at least a second pixel value from the second pixel 7a 2 of the first line pixel array 7a and a second pixel value from the second pixel 7b_2 of the second line pixel array 7b, and calculating in each case an average value by means of a line average acquisition method from the first pixel values ​​and the second pixel values ​​and providing in each case a pixel value for further processing. The second light source 4a can be arranged as a reflected light source with respect to light source 4, with respect to a plane perpendicular to the object plane 1, parallel to the rod-shaped lenses 6, and passing through a central optical axis of the rod-shaped lenses 6. The incident light source 4a can be provided to position the light source 4a at various angles with respect to an object guide 1, for example, in a range of values ​​from approximately 30 degrees to approximately 60 degrees, or at an angle of approximately 45 degrees. Furthermore, at least one transmitted light source 4b, 4c can be provided. Additionally, at least one light source can function as a transmitted light source. The transmitted light source can be arranged on the opposite side with respect to a guide device 1 as the image plane. The device 10 comprises a row of bar-shaped lenses 6 or a plurality of rows of bar-shaped lenses 6 arranged in series, wherein the rows of bar-shaped lenses 6 are arranged parallel to each other, and wherein each of the rows is arranged transversely to the transport device 8. In various embodiments, at least a first row of the plurality of rod-shaped lens rows 6 may be arranged next to at least one other row of the plurality of rod-shaped lenses, wherein the first row of rod-shaped lenses 6 and the additional row of rod-shaped lenses may be arranged in a direction transverse to the transport direction of the object 2 at a predefined distance, for example in a range of values ​​from about 1 micrometer to about 10 micrometers, for example at a distance of 2 micrometers, for example 4 micrometers, for example 7 micrometers, for example 9 micrometers, and may be offset from each other by a predefined distance, for example in a range of values ​​from about 0 micrometers to about 400 micrometers, for example from 130 micrometers to about 340 micrometers, for example at a distance of about 190 micrometers.transverse to the direction of transport 8, and / or at least an intermediate space between a rod-shaped lens 6 and an adjacent rod-shaped lens may be filled with at least one filler material, for example, black silicone resin or black silicone resin, for example. In several embodiments, the device described herein can be operated by a method described herein to improve the reproducibility of the captures. The method may comprise: at least one of guiding at least one object 2 in a guiding device 1 in an object plane l by means of the guiding device 1, transporting the object 2 in the guiding device 1 in the object plane l in a transport direction 8 by means of at least one driving device 3, illuminating the object 2 by means of at least one light source 4, dispersing at least partially the light emitted by the light source 4 from the object 2 towards the rod-shaped lenses 6,transmitting at least part of the scattered light from object 2 by means of a plurality of rod-shaped lenses 6 arranged between the object plane and an image plane 5 and in a row along a direction transverse to the transport direction 8 of object 2 to a light-sensitive in-line pixel array 7, which controls at least one of the light source 4 and the in-line pixel array 7 by means of a control device 9, wherein the in-line pixel array 7 comprises a plurality of one-dimensional in-line pixel arrays 7a, 7b, each of which extends along the direction transverse to the transport direction 8 of object 2, arranged parallel to and adjacent to each other, and wherein each in-line pixel array 7a, 7b has a length transverse to the transport direction 8 of object 2 that completely covers the object 2 to be captured,capturing the light reflected by the rod-shaped lenses 6 by means of at least one region of a light-sensitive in-line pixel array 7 arranged in the image plane 5, and combining at least individual pixel values ​​from the plurality of one-dimensional in-line pixel arrays 7a, 7b and providing a pixel value for further processing by means of the control device 9., Although in Fig. 2, the transport direction 8 is shown in a first direction, the transport direction 8 can also be in a direction opposite to that shown in Fig. 2. The device 10 can further be configured to transport the object 2 in both a first transport direction 8 and a second transport direction opposite to the first transport direction. FIG. 3 is a schematic diagram of a device 20 to improve the reproducibility of captures according to various realizations. The device 20 described with reference to Fig. 3 may comprise at least one or all of the features of the device 10 described with reference to Fig. 2. The reference symbols illustrated in Fig. 3 correspond to the reference symbols used with respect to Fig. 2. The device 20 of Fig. 3, with certain components omitted or not shown for ease of understanding, comprises a plurality of light sources 4, 4a, 4b, 4c, and 4d. For example, a banknote or check can be carried by a plurality of straps, as exemplified in Fig. 3. The device 20 can operate, for example, in a reflected light mode in which at least one light source 4, 4a functions to illuminate at least one object 2 that can be carried on the device 20. For example, the device 20 can operate in a transmitted light mode in which at least one light source 4b, 4c, 4d functions to illuminate object 2. For example, light source 4b and / or 4d can operate in a dark-field transmitted light mode. For example, light source 4c can operate in a bright-field transmitted light mode. In other words, at least one light source 4, 4a can be arranged on the same side (incident light measurement) with respect to the object plane, and / or at least one light source 4b, 4c, 4d can be on the opposite side (transmitted light measurement) from the image plane. The arrangements of the light sources 4, 4a, 4b, 4c, 4d in Fig. 3 illustrate one possible arrangement. In various embodiments, the light sources 4, 4a, 4b, 4c, 4d can be in other positions. Figures 4A, 4B, 4C, and 4D are schematic diagrams of a portion of a device and a method for improving the reproducibility of captures according to various embodiments. Figures 4A, 4B, 4C, and 4D each show a diagram schematically illustrating a contact image sensor 10 having two sets of one-dimensional in-line pixels 7a, 7b according to various embodiments. The first in-line pixel array 7a comprises a plurality of pixels 7a₁, 7a₂. The second in-line pixel array 7b comprises a plurality of pixels 7b₁, 7b₂. Each pixel of the plurality of pixels 7a₁, 7a₂, 7b₁, 7b_2 can be read, for example, by means of control device 9. FIG. 4A shows a resting state of the contact image sensor 10 with two sets of one-dimensional in-line pixels 7a, 7b according to various embodiments. Figure 4B shows a first operating state (verification operation) of the contact image sensor 10 with two sets of one-dimensional in-line pixels 7a and 7b according to various embodiments. In the first operating state, the control device 9 is configured to set the resolution of the first in-line pixel array 7a to 200 dpi if object 2 is at least a check. Additionally, the control device 9 disables the second in-line pixel array 7b. The control device 9 monitors the first in-line pixel array 7a and reads the pixel values ​​from it, for example, at an intrinsic resolution. FIG. 4C shows a second operating state (banknote operation) of the contact image sensor 10 with two sets of one-dimensional in-line pixels 7a, 7b according to various embodiments. In the second operating state, the control device 9 is configured to set the resolution of the first in-line pixel array 7a and the second in-line pixel array 7b to 100 dpi if the object 2 is at least one banknote. The control device 9 activates the first and second in-line pixel arrays 7a, 7b and reads and combines at least two pixel values ​​from adjacent pixels 7a_1, 7a_2 into the first in-line pixel array 7a. Control device 9 is further configured to read and summarize at least two pixel values ​​from adjacent pixels 7b 1, 7b 2 corresponding to the two adjacent pixels 7a 1, 7a 2 in the first line pixel array 7a in the second line pixel array 7b.The control device 9 is further configured to combine the two combined neighbor pixels 7a 1, 7a 2 into the first inline pixel array 7a and the two combined neighbor pixels 7b_l, 7b_2 into the second inline pixel array 7b, for example by means of a binning method, and to provide a pixel value based on the combined pixel values ​​for further processing. In several embodiments, the control device 9 is further configured to combine pixel values ​​from two adjacent pixels 7a_l, 7a_2 of the first line pixel array 7a and pixel values ​​from two adjacent pixels 7b_l, 7b_2 of the second line pixel array 7b corresponding to the two adjacent pixels 7a_l, 7a_2 of the first line pixel array 7a using a 2x2 binning method and provide a pixel value based on the combined pixel values ​​for further processing. The control device operates both lines at half resolution. The binning method allows for greater light sensitivity per virtual pixel, improves the signal-to-noise ratio, and enables faster line reading. In several embodiments, the control device 9 is further configured to allow the first and second in-line pixel arrays 7a, 7b to read at least one first pixel value from a first pixel 7a_1 of the first in-line pixel array 7a and one first pixel value from a first pixel 7b_1 of the second in-line pixel array 7b. The control device 9 is further configured to read at least one second pixel value from the second pixel 7a_2 of the first in-line pixel array 7a and one second pixel value from the second pixel 7b_2 of the second in-line pixel array 7b, and to calculate an average value in each case from the first pixel values ​​and the second pixel values ​​by means of a line-averaging acquisition method, and to provide a pixel value in each case for further processing. For banknote printing at 100 dpi, two pixels in the line and two additional pixels in the transport direction are combined to form a single square pixel. This allows for moiré-free scanning in the transport direction at 100 dpi, enabling higher processing speeds than with a conventional contact image sensor, where 200 dpi must be scanned in the transport direction for each color channel, requiring a contact image sensor with a higher line rate and generating more data. The device and method for improving the reproducibility of captures allows the same contact image sensor with different resolutions to perform as well as a contact image sensor specifically designed for that resolution, without significantly increasing manufacturing costs by increasing the quantities of that model. For a banknote reader with a contact image sensor described herein, the resolution can be configured in operation without sacrificing performance compared to a contact image sensor designed only for the corresponding resolution or to two differently designed contact image sensors, which increases costs, space requirements, and the risk of congestion.This switching is necessary if the banknote reader is also to be used for check operation and / or if color channels with different resolutions are operated in the lighting sequence. The control device 9 can automatically switch between the operating modes described with reference to the Figures 4B and 4C. For example, the object can be determined to be a check. Control device 9 can then be set to the operating mode described with reference to Fig. 4B. For example, the object can be determined to be at least a banknote. Control device 9 can then be set to the operating mode described with reference to Fig. 4C. However, the operating modes can also change within the color sequence. Individual pixel values ​​can be read and converted by means of an analog-to-digital converter 11, as shown schematically in FIG. 4A to Fig. 4D. FIG. 4D shows another operating state of a contact image sensor with two sets of one-dimensional in-line pixels 7a, 7b according to various embodiments. As illustrated schematically in FIG. 4D, at least one pixel in at least one in-line pixel array perpendicular to the transport direction can be wider than a pixel in at least one other in-line pixel array. For example, a pixel in a first in-line pixel array can be wider relative to a corresponding pixel in a second in-line pixel array by, say, a factor of approximately 1.5 to approximately 3.5, or a factor of 2. In other words, a pixel width perpendicular to the transport direction of an object in a first row can be twice as wide as a pixel width in a second row.In other words, the first pixel in a row may have a width across the transport direction of an object that, together, two pixels in an adjacent row have across the transport direction. For example, the width across the transport direction of a pixel in a first pixel array in line 7a and a pixel in a second pixel array in line 7b may both be 127 micrometers. With reference to Fig. 4D, the width across the transport direction of a pixel in a first pixel array in line 7a may be, for example, 127 micrometers, and the width across the transport direction of a pixel in a second pixel array in line 7b may be, for example, 254 micrometers. FIG. 5 is a schematic representation of a subsection 40 of a device for improving the reproducibility of captures according to various realizations. Figure 5 illustrates an example of a subarea 40 of a moiré-free contact image sensor with a resolution of 100, 200, 300, and 600 dots per inch. In a device 10, 20, to improve capture reproducibility, at least one pixel in at least one inline pixel array may be wider than a pixel in at least one other inline pixel array. For example, a first row may comprise a plurality of pixels of the same size (see pixel array in row 7a in Figure 5). An adjacent row may comprise pixels of different widths, for example, pixels that are twice as wide as the pixels in the first row. For example, a second row may comprise a pixel sequence of: a pixel with a pixel width of two pixels, a pixel with a pixel width of one pixel from the first row, a pixel with a pixel width of one pixel, a pixel with a pixel width of two pixels (see pixel sequence in row 7b in FIG. 5).This sequence can be repeated in the second row. In a third row, a pixel can have a pixel width of three pixels from the first row. This pixel width can be repeated in the third row (see the pixel sequence in row 7c in FIG. 5). In a fourth row, a pixel can have a pixel width of six pixels from the first row. This width can be repeated in the fourth row (see the pixel sequence in row 7d in FIG. 5). For example, the height of the pixels in the fourth row can be three times the height of the pixels in the first row. A lower line 7a can be designed for 600 dots per inch (see 12a). If a resolution of 300 dots per inch is to be captured, a pixel area can be enlarged by analog grouping to pixel area 12b. If a resolution of 200 dots per inch is to be captured, a pixel area can be enlarged to pixel area 12c by analog grouping. If a resolution of 100 dots per inch is to be captured, a pixel area can be enlarged to pixel area 12d using analog grouping. In other words, pixels can be combined to form at least one larger pixel. In other words, a plurality of pixels can be combined in at least one line or in a plurality of lines so that a respective resolution, for example, 100 dots per inch, can be achieved.For a resolution of 300 dots per inch, two adjacent pixels can be connected together in a first row and the corresponding pixels can be connected together in a second row (see 12b), which in turn can be connected together, as illustrated schematically in FIG. 5. Each area of ​​pixels 12b, 12c, 12d shown in FIG. 5 can be connected individually or combined by an analog grouping process. FIG. 6 is a schematic representation of a part of a device and a method for improving the reproducibility of captures according to various realizations. Figure 6 illustrates an illumination sequence in which a contact image sensor can be designed to have a resolution of 200 dpi, for example. The contact image sensor illustrated in Figure 6 could be, for example, a contact image sensor described in this document. The segments 13 in Figure 6 could have a length of, for example, approximately 1016 micrometers. A step, i.e., a step size between adjacent pixels perpendicular to the transport direction, could be, for example, approximately 127 micrometers in the one-dimensional pixel array 7a, 7b. The extent of a pixel in the transport direction 8 cannot therefore exceed 127 micrometers; otherwise, the resolution in the transport direction would deteriorate. That is, in the transport direction 8, pixel 7a would instantaneously capture 127 micrometers if the rod-shaped lens 6 could generate a perfect image.Segment 14a, which has, for example, a length of approximately 127 micrometers, represents a segment at a time when at least one of the light sources 4, 4a, 4b, 4c, 4d, for example an LED, is switched on. During the capture of the first line, for example a green line, object 2, for example a banknote, moves in the transport direction 8. At the end of the first line capture, the capture location is displaced by approximately 10¹⁶ micrometers divided by 12 (see segment 14b in Figure 6). The sensitivity of an ideal contact image sensor 10 and / or an in-line pixel array 7 in the transport direction 8 is described by the trapezoids A in Figure 6. However, in practice, the pixel size in the transport direction 8 for a contact image sensor and / or a photosensitive in-line pixel array can only be approximately 99 micrometers. Therefore, segments 15a and 15b in Figure 6 are shorter.Furthermore, due to time constraints and to compensate for variations, the illumination cannot occur for the entire length of the line. Instead, it begins after the start of the line and ends before the end, thus having a duty cycle significantly less than one. As used here, the duty cycle is a ratio of 1 to the illumination duration and the inverse line rate. An inverse line rate can be understood as a line time, for example, as 1.016 miles / (12*v), where v indicates a speed. Therefore, segments Ί5a and 15b cover a smaller region than desired, or the slopes of trapezoid B are steeper. The actual sensitivity of, for example, a green channel in the transport direction 8 is described by trapezoids B in FIG. 6.This can be used to explain the appearance of the moiré effect, for example, for periodic or quasi-periodic pressure structures, which are typically produced by lines that absorb or do not absorb, respectively, and have a frequency similar to the scan frequency. When the sensitive area falls on the absorbent print structure, it appears dark. This is shown, for example, by a periodic structure 17 for the absorbent parts 17a for the green channel with sensitivity B in region 19a in Fig. 6. When the sensitive area falls on the non-absorbent parts of the structure, it appears bright. This is shown, for example, by a periodic bright structure 17b in region 18a in Fig. 6. When the banknote is scanned several times, the absorbent structure may fall on the sensitive area once and the non-absorbent structure again for a given area, for example, if the halftone screens shift slightly relative to each other. In several embodiments, if at least one approximately identical second pixel from a second one-dimensional in-line pixel array 7b is available in the transport direction 8 to eliminate the moiré effect, and binning is performed with the first pixel from a first one-dimensional in-line pixel array 7a, for example (reference character 16 in FIG. 6), a sensitivity of, for example, a green channel can be set in the transport direction 8 as described by trapezoids C in FIG. 6. The gaps in sensitivity, as seen with trapezoids A and B in FIG. 6, have now virtually disappeared. In several implementations, if the second pixel in transport direction 8 is slightly longer than the first pixel in transport direction 8, for example by a factor of approximately 1.5 to 1.7, or 1.57 times longer, the sensitivity can be approximately constant over transport distance 8 (or over the banknote). This means that a moiré effect may no longer occur. FIG. 7 is a flowchart that schematically illustrates a method for improving the reproducibility of captures according to various realizations. The method for improving the reproducibility of the captures may comprise at least one of the following: guiding at least one object in an object plane by means of a guiding device (S701); transporting the object in the object plane in a transport direction by means of at least one drive device (S702); illuminating the object by means of at least one light source of a contact image sensor (S703); at least partially scattering light emitted from the light source from the object towards a plurality of rod-shaped lenses of the contact image sensor (S704); obtaining images of at least a portion of the light scattered from the object by means of the plurality of rod-shaped lenses arranged between the object plane and an image plane and in a row along a direction transverse to the transport direction of the object to at least one in-line photosensitive pixel array of the contact image sensor(8705); controlling at least one of the light source and the photosensitive in-line pixel array by means of a control device (S706), wherein the photosensitive in-line pixel array comprises a plurality of one-dimensional in-line pixel arrays, each of which extends along the transverse direction to the object's transport direction, arranged parallel to and adjacent to each other, and wherein each set of in-line pixels has a length transverse to the object's transport direction that completely covers the object to be detected, capturing at least part of the light reflected by the bar-shaped lenses by means of at least one region of an in-line photosensitive pixel array arranged in the image plane (S707), combining at least individual pixel values ​​from the plurality of one-dimensional in-line pixel arrays (S708), and providing a pixel value for further processing by means ofof the control device (S709). In several embodiments, the method may also include features described with respect to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and / or FIG. 6. The advantages described with respect to the embodiments of the device described herein also refer to the embodiments of the method described herein, and vice versa. Several aspects of this revelation are illustrated below: Embodiment 1 is a device for improving the reproducibility of captures. The device may comprise: a guidance device configured to guide at least one object in an object plane; at least one drive device configured to transport the object in the object plane in a transport direction, an image plane; at least one contact image sensor having at least one light source for illuminating the object, a plurality of rod-shaped lenses arranged between the object plane and the image plane and in a row along a direction transverse to the transport direction of the object, and at least one light-sensitive in-line pixel array arranged in the image plane;A control device configured to control at least one of the light source and the light-sensitive in-line pixel array and to capture a signal generated by the light-sensitive in-line pixel array, wherein light emitted by the light source is at least partially scattered by the object towards the rod-shaped lenses, reflected by means of the rod-shaped lenses, and incident on at least one region of the photosensitive in-line pixel array, wherein the photosensitive in-line pixel array comprises a plurality of one-dimensional in-line pixel arrays, each of which extends along the transverse direction to the transport direction of the object, arranged parallel to and adjacent to each other, and wherein each in-line pixel array has a length transverse to the transport direction of the object that completely covers the object to be captured. In embodiment 2, the object of embodiment 1 may optionally comprise that each in-line pixel array comprises a plurality of pixels, and each pixel comprises at least one CMOS or CCD type photodiode to capture a pixel value from the light emitted from the light source and / or wherein a number of in-line pixel sets is less than a number of pixels in each in-line pixel set (7a; 7b). In embodiment 3, the object of embodiments 1 or 2 may optionally comprise at least a first in-line pixel array and a second in-line pixel array from the plurality of in-line pixel arrays that are constructed identically. In embodiment 4, the object of embodiment 1 or 2 may optionally comprise at least a second in-line pixel array from the plurality of in-line pixel arrays in the transport direction of the object, which is longer than a first in-line pixel array from the plurality of in-line pixel arrays in the transport direction of the object. At least one pixel in at least one in-line pixel array may be configured to be wider in the transport direction than a pixel in at least one other in-line pixel array. In embodiment 5, the object of embodiments 1 to 4 may optionally comprise that the control device is further configured to operate the first in-line pixel array and the second in-line pixel array independently of each other, and wherein the control device is configured to connect the second in-line pixel array to the first in-line pixel array. In embodiment 6, the object of embodiments 1 to 5 may optionally comprise the plurality of in-line pixel arrays having a resolution in the transverse direction to the transport direction of 200 dpi, or an in-line pixel array having a resolution in the transverse direction to the transport direction of 200 dpi and a second in-line pixel array having a resolution in the transverse direction to the transport direction of 100 dpi. In embodiment 7, the object of embodiments 1 to 6 may optionally comprise a pixel from the plurality of in-line pixel arrays having a size of 127 micrometers by 127 micrometers. In embodiment 8, the object of embodiments 1 to 7 may optionally comprise that the control device is further configured to, in the event that the object is at least a check, set a resolution of the first in-line pixel array to 200 dpi, disable the second in-line pixel array, control the first in-line pixel array, and read the pixel values ​​from the first in-line pixel array. In embodiment 9, the object of embodiments 1 to 8 may optionally comprise that the control device is further configured to, in the event that the object is at least one banknote, set a resolution of the first in-line pixel array and the second in-line pixel array to 100 dpi, activate the first in-line pixel array and the second in-line pixel array, physically combine at least one charge collected in quantum wells of two adjacent pixels in the first in-line pixel array and read pixel values, physically combine and read the pixel values ​​of at least one charge collected in potential wells of two adjacent pixels in the second in-line pixel array corresponding to the two adjacent pixels in the first in-line pixel array, and provide a pixel value based on the read pixel values ​​for further processing. In embodiment 10, the object of embodiments 1 to 7 may optionally comprise that the control device is further configured to combine pixel values ​​from two adjacent pixels of the first in-line pixel array and at least one pixel value from an adjacent pixel of the second in-line pixel array using an analog pooling method and to provide a pixel value based on the combined pixel values ​​for further processing. In embodiment 11, the object of embodiments 1 to 10 may optionally comprise that the control device is further configured to allow the first online pixel array and the second online pixel array to read at least a first pixel value from a first pixel of the first online pixel array and a first pixel value from a first pixel of the second online pixel array, to read at least a second pixel value from the second pixel of the first online pixel array and a second pixel value from the second pixel of the second online pixel array, and in each case calculate an average value by means of a line-averaging acquisition method from the first pixel values ​​and the second pixel values ​​and provide in each case a pixel value for further processing. In embodiment 12, the object of embodiments 1 to 11 may optionally comprise the device comprising at least a second light source for illuminating the object, wherein the second light source is arranged on a side opposite the light source with respect to the plurality of rod-shaped lenses and / or the rod-shaped lenses are gradient index rod-shaped lenses. In embodiment 13, the object of embodiments 1 to 12 may optionally comprise the device comprising a plurality of rows of rod-shaped lenses arranged in series, wherein the rows of rod-shaped lenses are arranged parallel to each other, and wherein each row is arranged transversely to the transport device. In embodiment 14, the object of embodiment 13 may optionally comprise at least a first row of the plurality of rod-shaped lenses arranged next to at least one other row of the plurality of rod-shaped lenses, the first row of rod-shaped lenses and the other row of rod-shaped lenses being arranged at a predefined distance from each other in a direction transverse to the transport direction of the object and are offset from each other by a predefined distance transverse to the transport direction, and / or at least one gap between a rod-shaped lens and an adjacent rod-shaped lens that is filled with at least one filler material. Embodiment 15 is a method for improving the reproducibility of the capture. The method for improving the reproducibility of the captures may comprise: guiding at least one object in an object plane by means of a guiding device; transporting the object in the object plane in a transport direction by means of at least one drive device; illuminating the object by means of at least one light source of a contact image sensor; at least partially scattering light emitted from the light source from the object towards a plurality of rod-shaped lenses of the contact image sensor;obtaining images of at least a portion of the light scattered from the object by means of a plurality of rod-shaped lenses arranged between the object plane and an image plane and in a row along a direction transverse to the object transport direction to at least one in-line photosensitive pixel array of the contact image sensor;controlling at least one of the light source and the photosensitive in-line pixel array by means of a control device, wherein the photosensitive in-line pixel array comprises a plurality of one-dimensional in-line pixel arrays, each of which extends along the transverse direction to the object's transport direction and arranged parallel to and adjacent to each other, and wherein each set of in-line pixels has a length transverse to the object's transport direction that completely covers the object to be detected; capturing the light reflected by the rod-shaped lenses by means of at least one region of an in-line photosensitive pixel array arranged in the image plane; and combining at least individual pixel values ​​from the plurality of one-dimensional in-line pixel arrays and providing a pixel value for further processing by means of the control device. Other advantageous realizations of the methods will become evident from the description of the devices described herein and vice versa.

Claims

1. Device for improving the reproducibility of captures comprising: a guide device (1) configured to guide at least one object (2) in an object plane (la); at least one drive device (3) configured to transport the object (2) in the object plane (la) in a transport direction (8), an image plane (5); at least one contact image sensor with at least one light source (4) for illuminating the object (2), a plurality of rod-shaped lenses (6) arranged between the object plane (la) and the image plane (5) and in a row along a direction transverse to the transport direction (8) of the object (2),and at least one light-sensitive in-line pixel array (7) disposed in the image plane (5); a control device (9) configured to control at least one of the light source (4) and the light-sensitive in-line pixel array (7) and to capture a signal generated by the light-sensitive in-line pixel array (7). ), wherein a light emitted and scattered by the light source (4) is reflected by the object (2) towards the object (2) and comes into contact with the photosensitive online pixel array (7), wherein the photosensitive online pixel array (7) comprises a plurality of one-dimensional online pixel arrays (7a, 7b), each of which extends along the transverse direction to the transport direction (8) of the object (2), arranged parallel to and adjacent to each other,wherein each in-line pixel array (7a, 7b) comprises a length transverse to the transport direction (8) or the object (2) that completely covers the object (2) to be captured, and wherein at least a second in-line pixel array (7b) of the plurality of in-line pixel arrays (7a, 7b) in the transport direction (8) of the object (2) is made longer than a first in-line pixel array (7a) of the plurality of in-line pixel arrays (7a, 7b) in the transport direction (8) of the object (2).

2. Device according to claim 1, characterized in that each in-line pixel array (7a, 7b) comprises a plurality of pixels (7a_1, 7a_2, 7b_1, 7b_2), and each pixel (7a 1, 7a 2, 7b 1, 7b 2) comprises at least one CMOS or CCD type photodiode for capturing a pixel value from the light emitted by the light source (4), and / or wherein a number of in-line pixel sets (7a, 7b) is less than a number of pixels ( 7a_1, 7a_2; 7b 1, 7b 2) in each in-line pixel array (7a; 7b).

3. Device according to claim 1 or 2, characterized in that at least one pixel (7b 1, 7o 2) in at least one in-line pixel array (7b) transverse to the transport direction is made wider than a pixel (7a_l, 7a_2) in at least one additional in-line pixel array (7a).

4. Device according to any of the preceding claims, characterized in that the control device (9) is further configured to operate the first in-line pixel array (7a) and the second in-line pixel array (7b) independently of each other, and wherein the control device (9) is configured to connect the second in-line pixel array (7b) to the first in-line pixel array (7a).

5. Device according to any of the preceding claims, characterized in that the plurality of in-line pixel arrays (7a, 7b) comprises a resolution in the direction transverse to the transport direction (8) of 200 dpi, or wherein one in-line pixel array (7a) comprises a resolution in the direction transverse to the transport direction (8) of 200 dpi and a second in-line pixel array (7b) comprises a resolution in the direction transverse to the transport direction (8) of 100 dpi.

6. Device according to any of the preceding claims, characterized in that a pixel of the plurality of in-line pixel arrays (7a, 7b) comprises a size of 127 micrometers by 127 micrometers.

7. Device according to any of the preceding claims, characterized in that the control device (9) is further configured to, in the event that the object (2) is at least a check, set a resolution of the first in-line pixel array (7a) to 200 dpi, disable the second in-line pixel array (7b), control the first in-line pixel array (7a), and read the pixel values ​​from the first in-line pixel array (7a).

8. Device according to any of the preceding claims, characterized in that the control device (9) is further configured to, if the object (2) is at least one banknote, set a resolution of the first in-line pixel array (7a) and the second in-line pixel array (7b) to 100 dpi, activate the first and second in-line pixel arrays (7a, 7b), physically combine at least one charge collected in quantum wells of two adjacent pixels (7a1, 7a2) in the first in-line pixel array (7a) and read the pixel values, physically combine at least one charge collected in quantum wells of two adjacent pixels (7b1, 7b2) corresponding to the two adjacent pixels (7a1, 7a2) in the first in-line pixel array (7a) in the second in-line pixel array (7b) and read the pixel values, and provide a pixel value based on the pixel values ​​read for further processing.

9. Device of any of claims 1 to 6, wherein the control device (9) is further configured to combine pixel values ​​from two adjacent pixels (7a 1, 7a 2) of the first in-line pixel array (7a) and at least one pixel value from an adjacent pixel (7b 1; 7b 2) of the second in-line pixel array (7b) by means of an analog binning method, and provide a pixel value based on the combined pixel values ​​for further processing.

10. Device according to any of the preceding claims, characterized in that the control device (9) is further configured to activate the first and second in-line pixel arrays (7a, 7b), read at least one first pixel value from a first pixel (7a_l) of the first in-line pixel array (7a) and one first pixel value from a first pixel (7b 1) of the second in-line pixel array (7b), read at least one second pixel value from the second pixel (7a 2) of the first in-line pixel array (7a) and one second pixel value from the second pixel (7b__2) of the second in-line pixel array (7b), and in each case calculate an average value by means of a line averaging acquisition method from the first pixel values ​​and the second pixel values ​​and provide in each case a pixel value for further processing,and / or where the control device is further configured to switch operation between a resolution of 100 dots per inch and a resolution of 200 dots per inch by means of software.

11. Device according to any of the preceding claims, characterized in that the device (10) comprises at least a second light source (4a) for illuminating the object (2), wherein the second light source (4a) is arranged on a side opposite the light source (4) with respect to the plurality of rod-shaped lenses (6), and / or the rod-shaped lenses (6) are gradient index rod-shaped lenses.

12. Device according to any of the preceding claims, characterized in that the device (10) comprises a plurality of rows of rod-shaped lenses (6) arranged in series, wherein the rows of rod-shaped lenses (6) are arranged parallel to each other, and wherein the rows are each arranged transversely to the transport device (8).

13. Device of claim 12, characterized in that at least a first row of the plurality of rod-shaped lens rows (6) is arranged adjacent to at least one other row of the plurality of rod-shaped lenses, wherein the first row of rod-shaped lenses (6) and the other row of rod-shaped lenses are arranged at a predefined distance from each other in a direction transverse to the transport direction of the object (2) and are offset from each other by a predefined distance transverse to the transport direction (8), and / or at least one intermediate space between a rod-shaped lens (6) and an adjacent rod-shaped lens (6) is filled with at least one filler material.

14. A method for improving the reproducibility of captures, the method comprising: guiding at least one object (2) in an object plane (la) by means of a guiding device (1); transporting the object (2) in the object plane (la) in a transport direction (8) by means of at least one drive device (3); illuminating the object (2) by means of at least one light source (4) of a contact image sensor; scattering at least partially a light emitted from the light source (4) from the object (2) towards a plurality of rod-shaped lenses (6) of the contact image sensor; obtaining images of at least part of the light scattered by the object (2) by means of the plurality of rod-shaped lenses (6) arranged between the object plane (la) and an image plane (5) in a direction transverse to that of the object (2) to at least one light-sensitive array (7) of the sensor and in a row along the transport direction (8) of pixels incontact image line; controlling at least the light source (4) and / or the light-sensitive in-line pixel array (7) by means of a control device (9), wherein the photosensitive in-line pixel array (7) comprises a plurality of one-dimensional in-line pixel arrays (7a, 7b), each of which extends along the transverse direction to the transport direction (8) of the object (2), arranged parallel to and adjacent to each other, and wherein each in-line pixel array (7a, 7b) comprises a length transverse to the transport direction (8) of the object (2) that completely covers the object (2) to be captured; capturing at least part of the light reflected by the rod-shaped lenses (6) by means of at least a region of a photosensitive in-line pixel array (Ό) arranged in the image plane (5); and fusing at least individual pixel values ​​from the plurality of one-dimensional in-line pixel arrays(7a, 7b) and provide a pixel value for additional processing 5 by means of the control device (9), wherein at least a second in-line pixel array (7b) of the plurality of in-line pixel arrays (7a, 7b) in the transport direction (8) of the object (2) is made longer than a first in-line pixel array (7a) of the plurality of in-line pixel arrays (7a, 7b) in the transport direction (8) of the object (2).

Images