1295 results about "Good image" patented technology

A system and method use computer image processing for setting the parameters for an image acquisition device of a camera. The image parameters are set automatically by analyzing the image to be taken, and setting the controls according to the subject matter, in the same manner as an expert photographer would be able to. The system can run in a fully automatic mode choosing the best image parameters, or a "guided mode" where the user is prompted with choices where a number of alternate settings would be reasonable.

The present invention provides an imaging optical lens assembly including, in order from the object side to the image side: a first lens group comprising a first lens element with positive refractive power, no lens element with refractive power being disposed between the first lens element and an imaged object, the first lens element being the only lens element with refractive power in the first lens group; and a second lens group comprising, in order from the object side to the image side: a second lens element with negative refractive power; a third lens element; and a fourth lens element; wherein focusing adjustment is performed by moving the first lens element along an optical axis, such that as a distance between the imaged object and the imaging optical lens assembly changes from far to near, a distance between the first lens element and an image plane changes from near to far; and wherein the number of the lens elements with refractive power in the imaging optical lens assembly is N, and it satisfies the relation: 4≦N≦5. The abovementioned arrangement of optical elements and focusing adjustment method enable the imaging optical lens assembly to obtain good image quality and consume less power.

A method and apparatus for facial image acquisition and / or recognition used for person identification. In infrared face image acquisition, near infrared (NIR) images of a face are captured by an imaging unit with the face illuminated by active NIR lights; an NIR optical filter is used in the imaging unit to minimize visible lights in environments while allowing NIR lights to pass through. NIR face images thus acquired provides good image quality for the purpose of face recognition. In face recognition, eyes are localized in NIR face image(s) quickly and accurately by detecting specular highlight reflection in each eye, whereby face is then localized. The invention effectively problems caused by environmental lights, and leads to accurate and fast face recognition under variable lighting conditions. Moreover, the methods use a non-intrusive and user-friendly way of active lighting for face image acquisition and recognition because the NIR lights are in the invisible spectrum.

The present invention provides a wide-viewing-angle imaging lens assembly comprising, in order from an object side to an image side: a front lens group, a stop, and a rear lens group. The front lens group comprises, in order from the object side to the image side: a first lens element with negative refractive power having a concave image-side surface and a second lens element. The rear lens group comprises, in order from the object side to the image side: a third lens element with positive refractive power having a concave object-side surface and a convex image-side surface, a fourth lens element with positive refractive power having a convex object-side surface and a convex image-side surface, and a fifth lens element with negative refractive power having a concave object-side surface. Such an arrangement of optical elements can effectively enlarge the field of view of the wide-viewing-angle imaging lens assembly, reduce the sensitivity of the optical system, and obtain good image quality.

This invention provides an optical image lens assembly in order from an object side to an image side comprising: a first lens group has a first lens element with positive refractive power; a second lens group has a second lens element with negative refractive power; and a third lens group has at least three lens elements with refractive power; wherein a lens element in the third lens group closest to an image plane has negative refractive power and a concave image-side surface; wherein while a distance between an imaged object and the optical image lens assembly changes from far to near, focusing is performed by moving the second lens group along the optical axis toward the image plane. By such arrangement and focusing adjustment method, good image quality is achieved and less power is consumed.

Frame images captured in a continuous manner are acquired, and temporarily stored. Characteristic points of faces in the acquired frame images are extracted. A sum (expression change amount) of distances between characteristic points of the face (face parts) in a current frame and the characteristic points of a preceding frame is calculated. The target frame image in which the expression change amount is largest, and m frame images preceding and following the target frame image in which the expression change amount is largest are extracted as best image candidates. A best shot image is extracted from the best image candidates and stored in a storage medium. Thus, only an image (best shot image) which contains a face which a user wishes to record can be efficiently extracted from among images captured in a continuous manner, and stored.

The invention discloses a single-image super-resolution reconstruction method based on a symmetric depth network and belongs to the image processing technology field. The method mainly comprises the following steps of 1, making a high resolution image block and low resolution image block training set; 2, constructing a symmetric convolution-deconvolution depth network used for model training; 3, based on the constructed depth network and the made data set, carrying out network model training; and 4, based on a learned model parameter, inputting one low resolution image, wherein acquired output is a reconstructed high resolution image. In the invention, a convolution layer and a deconvolution layer are combined and simultaneously a network depth is increased; the network depth is used to increase network performance; a reconstruction capability of an image detail portion is enhanced and a good image super-resolution reconstruction effect is acquired. The method has a wide application prospect in fields of image high definition displaying, medical imaging, a remote sensing image and the like.

The invention discloses a semi-supervised image classification method based on a generative adversarial network, which mainly solves the problems that the existing unsupervised learning classificationprecision is low and semi-supervised learning needs a large number of accurate labels, and comprises the following implementation steps of: 1) selecting and downloading a standard image training sample and a test sample; 2) setting relevant parameters of network supervised learning, and establishing a generative adversarial network consisting of a generator network, a discriminator network and anauxiliary classifier in parallel; 3) training the generative adversarial network by using a random gradient descent method; and 4) inputting the test sample to be classified into the trained generative adversarial network model, and outputting the category of the image to be detected. The method improves the image classification precision of unsupervised learning, can obtain a very good image classification effect on a sample set only containing a small amount of accurate annotation samples, and can be used for target classification in an actual scene.

Disclosed is a pen-shaped optical mouse. The optical mouse has an optical fiber on the optical path of illuminating light, and an optical fiber bundle on the optical path of reflected light, respectively. The optical system of the optical mouse is realized irrespective of the optical paths and their lengths, showing a good image-transmitting feature to transmit good image to an image sensor. An image is input to the image sensor through an end of an optical tip where the image directly contacts a reflecting surface, which enhances the accuracy of the pen-shaped optical mouse since there is no change in the location of a mouse pointer or a focal length in spite of the change in the angle between the pen-shaped optical mouse and the reflecting surface.

A developing apparatus, a process cartridge and an electrophotographic image forming apparatus which can obtain a good image, and an end portion regulating member provided in them. The end portion regulating members for regulating the layer thickness of developer passed through interstices between a developing blade for forming a layer of the developer having a predetermined thickness on the surface of a developing roller and magnetic seals provided on the longitudinally opposite end portions of the developing roller in opposed relationship with the surface of the developing roller is provided downstream of the developing blade with respect to the rotating direction of the developing roller.

The present invention relates to a high precision method, model and apparatus for calibrating, determining the rotation of the lens scope around its symmetry axis, updating the projection model accordingly, and correcting the image radial distortion in real-time using parallel processing for best image quality.The solution provided herein relies on a complete geometric calibration of optical devices, such as cameras commonly used in medicine and in industry in general, and subsequent rendering of perspective correct image in real-time. The calibration consists on the determination of the parameters of a suitable mapping function that assigns each pixel to the 3D direction of the corresponding incident light. The practical implementation of such solution is very straightforward, requiring the camera to capture only a single view of a readily available calibration target, that may be assembled inside a specially designed calibration apparatus, and a computer implemented processing pipeline that runs in real time using the parallel execution capabilities of the computational platform.

A lens (16) is rotatably provided inside a dome cover (22). The lens (16) is supported so that the center of rotation can be moved from the center of a dome to a position apart therefrom in the zenith direction. A lens moving mechanism for moving the lens (16) according to a rotation in the tilt direction of the lens (16) may be provided. The lens moving mechanism may be a cam structure. The cam structure is set so that the rotation axis of the lens (16) is held at the center of the dome in a predetermined center hold angle range corresponding to the direction of an elevation angle, and that the rotation axis of the lens (16) is moved from the center of the dome in the zenith direction at angles lower than the center hold angle range. Good images can be obtained even when shooting in the direction of a depression angle.

An unfixed toner image on a transferring and fixing belt is passed through a pair of toner integrating rollers. A surface side of the toner integrated that is in contact with a paper, is heated by a halogen heater to impart a tackiness required for fixing. As a result of this, a temperature of a surface side of the toner that is in contact with the transferring and fixing belt is not as high as a temperature of the surface side of the toner that is in contact with the paper. Therefore, even if the toner is pressurized, and transferred and fixed at a fixing nip, a difference in an area of the toner is small. This enables to achieve a good image quality.

In subroutine 201 and step 205, a best image-forming plane of a projection optical system and an offset component of a multipoint AF system are detected as calibration information. During measurement of a wafer alignment mark by an alignment system in step 215, the multipoint AF system detects information related to a surface shape of a surface subject to exposure of a wafer (Z map). In step 219, a Z position order profile regarding position order (Z, θx, θy) related to autofocus leveling control is made, along with an XY position order profile of a wafer stage during scanning exposure, and in step 221, scanning exposure is performed while performing open control based on the position order.

The invention discloses resin holographic waveguide lenses and a preparation method thereof, and a three-dimensional display device constructed thereof. The resin holographic waveguide lenses comprise one piece, two pieces, and three pieces or three pieces above resin holographic waveguide lens units, the resin holographic wave guide lens unit comprises a polymer lining and a functionality film arranged on the polymer lining, a functionality region is arranged on the functionality film, and a Nano diffraction grating is arranged within the functionality region. According to the resin holographic waveguide lenses, the lenses have good image coupling and coupling efficiency, under the condition of using Nano diffraction grating to guarantee enough field view and observation area, the lenses have the advantages of low copy cost and high fidelity factor, the resin material prepared resin holographic waveguide lenses can be formed by impact and does not require regular lens processing.

An imaging apparatus capable of preventing photographing sensitivity from being increased more than necessary, reducing image quality degradation caused by camera shake or object shake and easily photographing images in good image quality. Digital camera 1 includes image shake correcting selection 16 that corrects shake of an optical image of a photographing object formed by the imaging optical system L, digital signal amplification section 110 that amplifies an image signal with a gain set by digital signal gain setting section 111, face detection section 120 that detects a face of a fast-moving specific photographing object such as a child or pet, and motion detection section 100 that detects motion of the face of the specific photographing object based on an output of face detection section 120, wherein when a fast-moving specific photographing object such as a child or pet or the face of the specific photographing object is detected, microcomputer 3 increases the gain of a photographing sensitivity changing function compared with when no specific photographing object such as a child or pet is detected, increases ISO sensitivity, increases a shutter speed and shortens exposure time.

This invention provides a system and method for employing and analyzing images that are illuminated in different colors depending upon the type of illumination being employed. In an illustrative embodiment, a color image sensor is used to acquire images of subjects of interest, and each of the direct bright field, dark field and diffuse illumination are transmitted to the surface simultaneously (concurrently with each other) in a discrete illumination color that is discretely discernable by the sensor. For example, direct bright field and dark field may be red, while diffuse may be blue. Pixels of the same sensitivity (for example, red and blue) in the image sensor receive only the image generated by that color of illumination. The reader of this invention includes processing components that independently assemble images from red and blue pixel addresses to create, in effect two simultaneous images (one image generated using a combination dark field and direct bright field and the other image generated using diffuse illumination) that overlap (are registered with respect to each other) perfectly. The best image is determined using conventional image analysis tools, and meaningful data (the code of the read symbol, for example) is derived from that best image.

The lens moving mechanism may be a cam structure. The cam structure is set so that the rotation axis of the lens is held at the center of the dome in a predetermined center hold angle range corresponding to the direction of an elevation angle, and that the rotation axis of the lens is moved from the center of the dome in the zenith direction at angles lower than the center hold angle range. Good images can be obtained even when shooting in the direction of a depression angle.

An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.

The present invention is an apparatus and method of manufacture for providing image capturing modules which can be embedded into thin displays (e.g., in laptop computers) while providing for improved image quality. In accordance with several embodiments, a webcam module embedded in a display has multiple positions. A first position (or a “rest” or “park” position) is the position of the webcam module when it is not in use. In this first position of the webcam module, it is in its most compact configuration, and lends itself to integration into a very thin display. In other positions, the webcam module has a more expanded configuration, thus leading to better image quality. Such an expanded configuration leads, amongst other things, to a larger depth of focus. In one embodiment, a stepped PCB is used to provide good image quality while maintaining a compact form factor as well as structural rigidity.

A solution for visual credential verification. The solution includes an apparatus, system, and method embodiment. The apparatus for visual credential verification includes an input module, a comparison module, and a response module. The input module receives from a security official an image of an unverified credential, such as a badge, that an individual has presented to the security official. The comparison module determines whether or not the unverified credential is valid or invalid. The determination includes comparing the image of the unverified credential with known good images of valid credentials. The comparison module may also compare authentication information such as a photo of the individual, a name, or a badge number, with known good authentication information. Based on the comparison module's determination, the response module notifies the security official that the unverified credential is either valid or invalid. A system for visual credential verification may be implemented with a server in communication with a security official's electronic device, such as a cell phone.

This invention provides a system and method for employing and analyzing images that are illuminated in different colors depending upon the type of illumination being employed. In an illustrative embodiment, a color image sensor is used to acquire images of subjects of interest, and each of the direct bright field, dark field and diffuse illumination are transmitted to the surface simultaneously (concurrently with each other) in a discrete illumination color that is discretely discernable by the sensor. For example, direct bright field and dark field may be red, while diffuse may be blue. Pixels of the same sensitivity (for example, red and blue) in the image sensor receive only the image generated by that color of illumination. The reader of this invention includes processing components that independently assemble images from red and blue pixel addresses to create, in effect two simultaneous images (one image generated using a combination dark field and direct bright field and the other image generated using diffuse illumination) that overlap (are registered with respect to each other) perfectly. The best image is determined using conventional image analysis tools, and meaningful data (the code of the read symbol, for example) is derived from that best image.

An optical lens system with a wide field of view comprises, in order from the object side to the image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a second lens element; a third lens element; a fourth lens element having a concave object-side surface and a convex image-side surface; a fifth lens element with positive refractive power; a sixth lens element with negative refractive power; a seventh lens element, one of an object-side surface and an image-side surface being aspheric. There are seven lens elements with refractive power. By adjusting the arrangement of curvature, refractive power of the respective lens elements and a stop, sufficient field of view can be obtained and the aberrations of the system can be corrected in order to obtain good image quality.

The invention discloses a semi-supervised multi-spectral remote sensing image segmentation method based on spectral clustering; the segmentation process includes that: (1) the characteristics inputted to the multi-spectral sensing image are extracted; (2) N points without labels and M points with labels are randomly and evenly sampled from a multi-spectral sensing image with S pixel points to form a set n which is the summation of N and M, wherein M points with labels are used for creating pairing limit information Must-link and Cannot-link sets; (3) the sampled point set is analyzed through semi-supervised spectral clustering to obtain the class labels of the n (n=N+M) points; (4) the sampled n (n=N+M) points are used as the training sample to classify the rest (S-N-M) points through nearest-neighbor rule, each pixel point is assigned with a class label according to the class of the pixel point and is used as the segmentation result of the inputted image. Compared with prior art, the invention has good image segmentation effect, strong operability, improves the classification accuracy, avoids searching the optimum parameters through repeated test, has small limit on image size and is better applicable to the segmentation of multi-class multi-spectral sensing images.

To provide a small-size image sensor and electromagnetic radiation imaging device which can obtain a good image without relying on the condition of an object, the image sensor including a plurality of pixel units arranged two-dimensionally, wherein each of the plurality of pixel units includes: a first photodiode and a second photodiode; a readout circuit which reads a signal generated by the first photodiode and a signal generated by the second photodiode, and outputs the read signals, the readout circuit being connected to the first photodiode and the second photodiode; and a difference circuit which outputs a difference signal corresponding to a difference between the signal read from the first photodiode and the signal read from the second photodiode, the difference circuit being connected to the readout circuit.

A method for evaluating an electric resistance member of an image forming apparatus which can maintain good image quality, without the occurrence of transfer defects such as insufficient transfer, even in a long-term use. An intermediate transfer belt of the image forming apparatus, which is evaluated based on a fluctuation characteristic of the resistivity in a period of continuous voltage application, is used. The absolute value Δρs of the amount of changes in the surface resistivity of the intermediate transfer belt within 2 seconds to 100 seconds from the beginning of voltage application is 0.3 [Log(Ω / )] or less, when the surface resistivity ρs is measured by applying a voltage of 500 V. The absolute value Δρv of the amount of changes in the volume resistivity within 2 seconds to 100 seconds from the beginning of voltage application is 0.5 [Log(Ω·cm)] or less, when the volume resistivity ρv is measured by applying a voltage of 200 V.

An unfixed toner image on a transferring and fixing belt is passed through a pair of toner integrating rollers. A surface side of the toner integrated that is in contact with a paper, is heated by a halogen heater to impart a tackiness required for fixing. As a result of this, a temperature of a surface side of the toner that is in contact with the transferring and fixing belt is not as high as a temperature of the surface side of the toner that is in contact with the paper. Therefore, even if the toner is pressurized, and transferred and fixed at a fixing nip, a difference in an area of the toner is small. This enables to achieve a good image quality.

A developing apparatus, a process cartridge and an electrophotographic image forming apparatus which can obtain a good image, and an end portion regulating member provided in them. The end portion regulating members for regulating the layer thickness of developer passed through interstices between a developing blade for forming a layer of the developer having a predetermined thickness on the surface of a developing roller and magnetic seals provided on the longitudinally opposite end portions of the developing roller in opposed relationship with the surface of the developing roller is provided downstream of the developing blade with respect to the rotating direction of the developing roller.

An ink-jet printing system comprising at least one ink-jet ink and a means for jetting an ink-jet ink onto a surface of a substantially non-absorbing ink-jet ink-receiver, characterized in that the ratio σSd / σLd of the dispersive surface energy of said ink-receiver surface a σSd over the dispersive surface energy of said ink-jet ink a σLd is greater than 0.9. A process for ink-jet printing is also claimed. High areal throughput ink-jet printing (e.g. >100 m2 / hour) with curable inks can be performed on different kinds of ink-receiver surfaces with a good image quality and colour density due to a controlled spreading of the ink-drops which can be directly cured.

A camera is provided with which a small size can be achieved while ensuring good image blur correction performance. The camera (1) has an optical system (O), a housing (2), a second drive unit (12) serving as part of an image blur corrector, an imaging element (17), a first angular velocity sensor (4), an acceleration sensor (7), a sensor drive unit (240), and a drive controller (22). The first angular velocity sensor (4) is configured to acquire the rotational angle of the housing (2). The acceleration sensor (7) is configured to acquire the amount of displacement of the housing (2). A correction computer (21) calculates the amount of drive of a correcting lens (9) from the displacement amount acquired by the acceleration sensor (7), and calculates the amount of drive of the correcting lens (9) from the rotational angle acquired by the first angular velocity sensor (4) using the position of the acceleration sensor (7) as a reference. The drive controller (22) controls the operation of the second drive unit (12) on the basis of these drive amounts.