41results about How to "Avoid image noise" patented technology

The image forming apparatus includes: an intermediate transfer body; a first liquid application device which applies a first liquid containing an aggregating agent on the intermediate transfer body; a second liquid application device which applies a second liquid containing a solvent-insoluble material on the intermediate transfer body, the solvent-insoluble material being induced to form an aggregate by the aggregating agent to form an image on the intermediate transfer body; and a transfer device which transfers the image formed on the intermediate transfer body to a recording medium, wherein conditions of γt>γ2>γ1 and γg>γ2>γ1 are satisfied, where γt is a surface energy of the intermediate transfer body, γ1 is a surface energy of the first liquid, γ2 is a surface energy of the second liquid, and γg is a surface energy of the aggregate of the solvent-insoluble material.

The invention discloses a haze removing method for a single image based on image haze concentration estimate. The method comprises the following steps: 1) inputting a haze image; 2) converting the inputted image from the RGB space into the HSV space; dividing SV channel images and calculating the characteristic vectors of the local blocks; 3) with the target of making the lowest image haze concentration, calculating the initialized optimal atmosphere transmission value for the haze image; 4) using a guide filter to refine the optimal atmosphere transmission value; and 5) calculating the refined optimal atmosphere transmission value, the atmosphere light estimation value as well as the brightness value of each pixel in the haze image to obtain a clear image. According to the invention, through the conversion of image haze removal into the problem of haze concentration minimizing, the atmosphere transmission value can be determined accurately so as to remove the haze as much as possible and to avoid the severe halo formation and image noise in the saturated areas. Not only the haze can be eliminated effectively, but also the halo formation and image noise can be controlled not to rise. Therefore, the method can be applied to different complex weathers.

The invention discloses a full-open permanent magnet for MRI, wherein the permanent magnet comprises: full-open main structure of a rectangular structure composed of two vertical yokes arranged left and right symmetrically and two transverse yokes arranged up and down symmetrically with an air gap zone of the permanent magnetic positioned in the middle of the full-open main structure; up and down two parallel opposite main poles which are respectively arranged on the sides close to the air gap zone of and connected with the up and down two transverse yokes; and up and down two parallel opposite pole plates which are respectively arranged on the sides close to the air gap zone of and connected with the up and sown two main poles. The invention enormously reduces the weight of the yokes, improves the shimming efficiency and increases the openness of the magnetic field.

A display panel control circuit includes a controller which processes external image data and sync signals from an external signal source, and source and gate drivers which drive a display panel on the basis of processed results from the controller. The controller is configured to provide predetermined internal image data and sync signals which are generated immediately after supply of power and processed instead of the external image data and sync signals, and whose processing results are temporarily output to the source and gate drivers.

The invention discloses a single image haze removal method combined with the human vision characteristic. The method includes the following steps that firstly, a haze image is input and a dark channel image of the haze image is acquired; secondly, an atmosphere illumination value of the haze image is estimated according to a dark primary color prior method; thirdly, an initial optimal atmospheric transmission value of the haze image is calculated; fourthly, a guide filter is used for refining, so that a refined optimal atmospheric transmission value is acquired; fifthly, the refined optimal atmospheric transmission value obtained through the fourth step and the atmosphere illumination estimated value are combined with the input haze image, so that a clear image is acquired. According to the method, methods such as saturation region segmentation combined with the human vision characteristic and self-adaption atmospheric transmission value calculation are adopted, haze of each pixel in the haze image is accurately removed, and the detail recovery effect of the image is improved; haze is effectively removed, meanwhile, the halo phenomenon can be restrained, image noise is prevented from being generated, and the method is suitable for different complex weather and is high in calculation speed.

A display device including a display unit having a plurality of pixels includes a calculation unit which accumulates the number of pixels of which display state is changed among the plurality of pixels so as to calculate the accumulated number of update pixels when a part of an image displayed on the display unit is changed, and a refresh control unit which executes a refresh operation of the display unit when the calculated accumulated number of update pixels becomes equal to or more than a defined value.

A belt-type fixing device is provided in which a nip pressure distribution in a fixing nip is made generally uniform with respect to a paper feeding direction and which thereby prevents occurrence of image noise even when a thick paper is fed.The belt-type fixing device has: an endless-sheet-like fixing belt, a pressurizing roller which has elasticity and on which a paper is passed through a fixing nip that is contact part between the pressurizing roller and an outer circumferential surface of the belt member, and a nip forming member which is provided in contact with an inner surface of the fixing belt, which relatively presses the fixing belt against the pressurizing roller, of which an opposite surface pressing the pressurizing roller is formed as a curved surface extending along an outer circumferential surface of the pressurizing roller, and of which the opposite surface is composed of an elastic layer.

The embodiment of the invention discloses an image enhancement method and device, electronic equipment and a medium. The method comprises the steps of determining an upper platform threshold value anda lower platform threshold value of double-platform histogram equalization according to a mean value and a standard deviation of histogram values corresponding to gray values of a base layer image, and performing double-platform histogram equalization processing on the base layer image to obtain a target base layer image; performing gain processing on the detail layer image based on the gain coefficient, and performing piecewise mapping processing based on a piecewise function to obtain a target detail layer image; fusing the target base layer image and the target detail layer image to obtainan enhanced target image, wherein the base layer image and the detail layer image are obtained by filtering the target image. According to the scheme, the problem of excessive stretching of the background can be effectively solved, and details of the image are enhanced while excessive enhancement of the noise of the image is avoided.

To provide an image forming apparatus that prevents generation of image noise by recovering a movable member having flexibility from creep deformation. The image forming apparatus for forming images on a recording medium comprises a movable member having flexibility, a detection section for detecting temperature of the movable member directly, a storage section for storing the temperature detected by the detection section when the apparatus is powered off, and a control section for changing a duration of time during which the movable member is in a preparatory operation corresponding to the detected temperature read from the storage section when the apparatus is powered on.

An optical system used in a barcode scanner is disclosed to include a standing cylinder lens, a light source that emits a light beam through the standing cylinder lens onto the barcode of the product to be scanned, a focusing lens that focuses the image reflected by the barcode, a linear sensor array, and a slanted arranged reflector that reflects the image focused by the focusing lens onto the linear sensor array for reading. The light path of the image focused by the focusing lens onto the reflector and the light path of the image reflected by the reflector onto the linear sensor array are overlapped, forming a light path overlap region.

In serial transmission of a mixture of isochronous data and anisochronous data, communications through a transmission path with a high ratio of occurrence of transmission errors may disturb images during streaming reproduction and produce noise in sound. To solve this problem, the isochronous data that has not been successfully received is retransmitted by using an anisochronous region. Thus, a transmission error of the isochronous data can be reduced without impairment of isochronous characteristics of the data.

There is provided a transmission device including: a transmission unit that transmits a container in a predetermined format including a first component stream that has, as component data, transmission video data obtained by switching between a plurality of types of transmission video data, and a predetermined number of second component streams that have pieces of other component data; and an information insertion unit that inserts dynamic range information of the component data that each of the component streams has into the component streams.

The invention discloses a lens shadow compensation method and device, a storage medium and a terminal. The method comprises the steps that an original image and an initial LSC compensation coefficientare acquired; acquiring ambient brightness when the original image is acquired; adjusting the initial LSC compensation coefficient according to the ambient brightness to obtain an adjusted LSC compensation coefficient, the lower the ambient brightness is, the larger the compression amplitude of the adjusted LSC compensation coefficient is than that of the initial LSC compensation coefficient; andperforming lens shadow compensation processing on the original image according to the adjusted LSC compensation coefficient to obtain a processed image. Through the scheme of the invention, the lensshadow compensation degree of the original image can be dynamically and adaptively adjusted according to the ambient brightness, so that the brightness of the surrounding area of the original image isproperly improved, and the image effect is prevented from becoming worse due to the fact that the image noise is increased in a dark environment.

Microwave photonic vector network analyzer and a method for measuring scattering parameters of a microwave device are provided. The analyzer comprises a microwave source, wherein a signal loading module, an optical sampling module and a signal processing module are sequentially arranged along a signal output direction of the microwave source; an output end of the signal processing module is respectively connected with a control end of the microwave source and a control end of the optical sampling module; and two test ports of the signal loading module are connected with both ends of a device to be tested. The invention realizes direct sampling and frequency conversion for microwave signals, abandons a superheterodyne structure and / or direct frequency conversion structure in the traditional network analyzer, simplifies the structure of the system while improving the measurement frequency range and avoiding image interference, and reduces system complexity, cost and power consumption.

The invention relates to a medical endoscope image enhancement method based on mathematical morphology, which realizes medical endoscope image enhancement based on HSI and morphological filtering, andcomprises the following specific steps: step 1, reading an original image, and converting a color space of the image into an HIS color space; step 2, keeping the hue H and saturation S of the image unchanged, and performing morphological filtering on the brightness I to realize brightness detail enhancement; and step 3, converting the processed image pixel value from the HIS color space to the RGB color space. According to the method, the brightness component of the color medical endoscope image can be properly enhanced, compared with the original image and the enhanced effect, the contour and details are more prominent, the image is clear, the color is bright, and introduction of excessive image noise is basically avoided.

The invention discloses a full-open permanent magnet for MRI, wherein the permanent magnet comprises: full-open main structure of a rectangular structure composed of two vertical yokes arranged left and right symmetrically and two transverse yokes arranged up and down symmetrically with an air gap zone of the permanent magnetic positioned in the middle of the full-open main structure; up and downtwo parallel opposite main poles which are respectively arranged on the sides close to the air gap zone of and connected with the up and down two transverse yokes; and up and down two parallel opposite pole plates which are respectively arranged on the sides close to the air gap zone of and connected with the up and sown two main poles. The invention enormously reduces the weight of the yokes, improves the shimming efficiency and increases the openness of the magnetic field.

An image-forming apparatus, equipped with an intermediate transfer member 3 having a surface layer that holds a toner image primary-transferred from a latent image-supporting member temporarily on the surface layer and allows secondary transfer of the toner image held thereon to an image receiving medium,wherein, when the moving distance of the intermediate transfer member surface from the secondary transfer region 15 to the first primary-transfer region 16 is designated as L (mm) and the moving speed of the intermediate transfer member as S (mm / second), the residual surface potential of the intermediate transfer member L / S seconds after application of the secondary transfer voltage is 1 / 20 or less of the first primary transfer voltage V1.

The invention relates to a medical device (4) with a tubular interior space (3) for accommodating the subject to be examined (1), a cladding (10) of the tubular interior space (3) facing towards the subject to be examined and a device for lighting the tubular interior space (3), which comprises at least one lamp (5), wherein the lamp (5) is mounted on the side of the cladding (10) of the tubular interior space (3) facing towards the subject to be examined and forms the tunnel contour of the tubular interior space (3).

The invention belongs to the technical field of medical instruments, and discloses a novel articular cavity endoscope and a control method thereof. The novel articular cavity endoscope comprises a control case, a cover, a display carried at the mobile phone terminal, a camera, a hose, a power interface, a controller carried at the server, an image acquisition module, an image enhancement module, a network communication module, a central control module, a diagnosis model construction module, a symptom diagnosis module, a data storage module and an update display module. The brightness component of the color medical endoscope image is properly enhanced through the image enhancement module, compared with the original image and the enhanced effect, the contour and details are more prominent, the image is clear, the color is bright, and introduction of excessive image noise is avoided; and an intelligent auxiliary diagnosis deep learning model is generated through the symptom diagnosis module, a focus recognition deep learning model, a lesion auxiliary diagnosis deep learning model and a focus automatic sketching deep learning model are generated through training learning, and the endoscope diagnosis accuracy and efficiency are greatly improved.

The invention discloses a single image dehazing method based on image haze concentration estimation, which includes the following steps: Step 1: input haze image; step 2: transform the input image from RGB space to HSV space, divide SV Channel image, calculate the local block feature vector; Step 3: Calculate the initial optimal atmospheric transmission value of the haze image with the lowest haze concentration in the image as the goal; Step 4: Use the guided filter to refine the optimal atmospheric transmission value; Step 5: A clear image is calculated by calculating the refined optimal atmospheric transmission value, atmospheric illumination estimate, and brightness value of each pixel in the haze image. By converting image dehazing into an optimization problem of minimizing haze concentration, the atmospheric transmission value is accurately determined, thereby removing haze as much as possible and avoiding serious halo phenomena and image noise in saturated areas. It can not only effectively remove haze, but also suppress the halo phenomenon and image noise, and is suitable for different complex weather conditions.