87 results about "Colour cast" patented technology

The invention discloses an underwater image enhancement method and system based on three-input multi-scale fusion. The method comprises the following steps: carrying out visibility recovery on an image to be processed; performing contrast enhancement through a nonlinear mapping function; carrying out enhancement processing on the contour of the high response area; respectively calculating a Laplacian contrast weight map, a saliency weight map and a saturation weight map of the three processed images; linearly combining all types of weight maps to obtain an aggregation weight map, and normalizing the aggregation weight to obtain a normalized weight map; decomposing the three processed images into a Laplacian pyramid, decomposing the normalized weight map into a Gaussian pyramid, and performing fusion through upward sampling and addition reconstruction; carrying out smoothing processing and edge-preserving sharpening processing on the fused image to obtain an image after underwater image enhancement and restoration; according to the method, the color cast problem of the underwater image is solved, the image contrast is effectively improved, and the texture details of the image are improved.

The invention provides a projection device and a projection system, and relates to the technical field of projection, the projection device comprises a mounting seat and light-emitting assemblies, the light-emitting assemblies are mounted on the mounting seat, the light-emitting assemblies are arranged in multiple rows, and the multiple light-emitting assemblies in each row are arranged at intervals; in the multiple light-emitting assemblies located in the same row, the light-emitting assemblies with the same light-emitting color are arranged in series. In at least one row of the plurality of rows of light-emitting components, the plurality of light-emitting components comprise a first light-emitting component and a second light-emitting component with two different light-emitting colors; the first light-emitting assemblies and the second light-emitting assemblies are located in the same row, at least one first light-emitting assembly is located between the two second light-emitting assemblies, and / or at least one second light-emitting assembly is located between the two first light-emitting assemblies. According to the projection equipment and the projection system provided by the invention, the color cast problem of the projection picture can be alleviated, and the display effect of the projection picture is ensured.

The application belongs to the technical field of image processing, and particularly relates to an image color cast detection method and device, a computer readable storage medium and a terminal device. The method comprises: acquiring a target image to be detected; performing image block segmentation on the target image to obtain each segmented image block of the target image; calculating a color cast feature distribution parameter of the target image according to each segmented image block; and determining a color cast detection result of the target image according to the color cast feature distribution parameter of the target image, a preset color cast feature distribution parameter of a non-color cast image and a preset color cast feature distribution parameter of a color cast image. Through the above method, the color cast detection result can be determined according to the color cast feature distribution parameter of the target image and the two preset color cast feature distribution parameters. Since the two preset color cast feature distribution parameters are known quantities, the use of a complex model in the image color cast detection process can be avoided, the calculation process is greatly simplified, and the efficiency of the image color cast detection method is improved.

An electronic device may have a display mounted in a housing. The display may have a pixel array that produces images. A display cover layer may overlap the pixel array. The display cover layer may have a planar central area surrounded by a peripheral edge area with a curved cross-sectional profile. From an on-axis viewing angle, an image on the pixel array is fully viewable through the planar central area and the peripheral edge area. From an off-axis viewing angle, the image is partly viewable through the peripheral edge area and not through the central area. To avoid an undesired color cast in the partly viewable image seen through the peripheral edge area of the display cover layer, the display may be provided with color cast compensation structures such as a guest-host liquid crystal layer that exhibits an anisotropic colored light absorption characteristic, a diffuser layer, and / or other optical structures.

The invention provides a display panel and a preparation method thereof and a display device, the display panel comprises a bearing substrate, a pixel defining layer and a color conversion layer, scattering particles are arranged in the pixel defining layer, the pixel defining layer is arranged on one side of the bearing substrate, the pixel defining layer is arranged in an array and forms a plurality of opening areas, and the color conversion layer is arranged on the bearing substrate. The color conversion layer comprises a plurality of color conversion parts, the color conversion parts are arranged on one side of the bearing substrate, the color conversion layer is arranged in the opening area, the size of the end, away from the bearing substrate, of the pixel defining layer is larger than that of the end, close to the bearing substrate, of the pixel defining layer, and the pixel defining layer forms an inverted trapezoidal structure with the wide upper portion and the narrow lower portion; the inclined side wall of the inverted trapezoid is equivalent to a light blocking screen, large-angle light rays can be blocked by the inclined side wall, the light rays are prevented from entering adjacent pixels, the phenomena of light ray crosstalk, light mixing, large-viewing-angle color cast and the like of the display panel can be greatly reduced, and the display effect of the display panel is further improved.

The application discloses a kind of clothing customization image intelligent color correction method and system, including S1: reading the file header metadata corresponding to target image file;Based on the preset flag, the picture format type of target image file is confirmed according to file header metadata;And when the picture format type of target image file is CMYK format, step S3 is executed;S3: data preprocessing is carried out to target image, and preprocessing data is obtained;S4: based on color space conversion strategy, the RGB image after conversion is obtained by mapping preprocessing data to RGB color space via XYZ color space;S5: color verification and optimization are carried out to the RGB image after conversion, and the optimized RGB format picture is obtained, to realize intelligent color correction to clothing customization image.Finally, the color deviation problem existing in the customization system for the provided picture is solved, and the consistency of image color in digital customization process is ensured.

The invention provides a processing method and device for an enhanced or restored image and electronic equipment. The method comprises the following steps: obtaining an original image and an enhanced or restored image; performing color cast judgment on the enhanced or restored image based on the original image, and determining whether the enhanced or restored image needs color correction; in response to determining that the enhanced or restored image requires color correction, multiple Gaussian difference decomposition is performed on the original image and at least a portion of the enhanced or restored image, obtaining a first low-frequency residual error layer and a plurality of first high-frequency detail layers corresponding to at least one part of the original image and a second low-frequency residual error layer and a plurality of second high-frequency detail layers corresponding to at least one part of the enhanced or restored image; and performing reconstruction based on the first low-frequency residual layer and the second high-frequency detail layer to obtain an enhanced or restored image after color correction. By fusing the low-frequency color information of the original image and the high-frequency details of the enhanced or restored image, the color cast problem in the enhanced or restored image can be effectively corrected.

The invention relates to a display screen adjusting method and device, electronic equipment, a medium and a product. The method comprises the steps of obtaining a first temperature parameter, determining a target brightness parameter based on pre-stored brightness configuration information and the first temperature parameter, adjusting backlight brightness of a display screen based on the target brightness parameter, and reducing a display parameter of a display interface of the display screen based on a use state of the display screen. The backlight brightness of the display screen can be adjusted based on the temperature parameter to increase the temperature of the display screen, so that the problems of smear, color cast and the like caused by the fact that the display screen is in a low-temperature state are solved, and the impression experience of a user is improved. Besides, after the temperature of the display screen is increased, the display parameters of the display interface are specifically adjusted based on the use state of the display screen, so that the display effect of the display interface is adjusted, and the display effect of the display interface is optimized.

The tongue color correction method based on a deep convolutional neural network relates to the field of medical image color correction, and solves the problems of color deviation of tongue image data generated by mobile devices in non-standard light source environment, tongue color image color distortion and the like, and the like.The present application collects picture data under standard illumination with a mobile device, uniformly scales, and enhances data; then collects data under a color-biased light source environment, and uniformly scales. The dataset under the standard light source is trained using a deep convolutional neural network, and the output result of the neural network is given to the downstream to perform a classification task on each pixel point. Each pixel point is converted from an RGB space to an HSV space, the distance of each current pixel point from the nearest point on the HSV space is calculated, the nearest pixel value is taken as a standard value, the RGB value corresponding to the HSV is finally calculated for color space restoration, and finally, tongue image color correction is realized. The present application restores the true color of the tongue image to the greatest extent.

The application provides a display substrate and a display panel. The display substrate comprises a substrate, a pixel definition layer, a plurality of light emitting devices and an expansion layer. The pixel definition layer is located on the substrate and comprises a plurality of openings. The plurality of light emitting devices are defined in the openings, and part of the plurality of light emitting devices are color deviation light emitting devices. The expansion layer is located on the side of the pixel definition layer away from the substrate, and at least part of the expansion layer surrounds the opening in which the color deviation light emitting device is defined. At high temperature, the expansion layer expands to shield the light emitted by the color deviation light emitting device, thereby reducing the light emitting brightness of the sub-pixel corresponding to the color deviation light emitting device, so as to alleviate or eliminate the high-temperature color deviation problem of the display substrate and the display panel.

This invention provides a dark level correction method and system based on joint constraints of brightness and temperature, belonging to the field of image signal processing technology. The method includes: acquiring a current image frame in the field environment and obtaining the corresponding operating temperature information; determining dark level correction parameters corresponding to the operating temperature information based on a pre-set dark level reference value in the brightness dimension and a pre-set dark level correction component in the temperature dimension; generating a dark level correction value for the current image frame based on the dark level correction parameters; and applying the dark level correction value to the pixel data of the current image frame to complete the dark level correction process. This invention achieves stable suppression of dark level drift under different operating temperatures and continuous imaging conditions, thereby improving the brightness consistency of dark areas and reducing the probability of color cast in dark areas.

The invention relates to a display control method, a display system, computer equipment and a readable storage medium, for each field period, m * K groups of row gray data corresponding to m * K row lines at each same row position in K LED modules are obtained, and if it is recognized that k groups of target row gray data meeting a preset high-gray judgment condition exist in the m * K groups of row gray data, the k groups of target row gray data meet the preset high-gray judgment condition. If yes, based on a preset gray level adjustment strategy, gray level correction processing is carried out on the k sets of target row gray level data, corresponding k sets of row gray level reduction display data are generated, and LED modules corresponding to all rows of gray level reduction display data are driven to execute corresponding display output; on the basis, on the premise that the overall display image quality is guaranteed, the average current overload risk of the target row line is effectively restrained, the color cast problem caused by the fact that a green light LED and a blue light LED cannot maintain constant current due to insufficient voltage drop in a high-brightness scene is avoided, and the stability and display quality of a display system in the high-brightness scene are effectively improved.

This application discloses a display device and an image compensation method, relating to the field of display technology. During the process of displaying an image on a display device, for images with color cast, the image compensation method includes: analyzing the image based on the RGB component values ​​to determine the maximum and average RGB values ​​of a target area in the image; if the ratio of the maximum RGB value to the average RGB value is greater than or equal to a preset first threshold; determining the compensation coefficients for each RGB component based on a preset compensation strategy; and compensating the image to obtain a compensated target image. The image compensation method provided in this application suppresses the compensation intensity of color cast while increasing the compensation intensity of other colors, thereby reducing color cast in the image and improving the user's visual experience.

The invention provides an image processing method and electronic equipment. The problem that an image shot by the electronic equipment has color cast can be solved. The method comprises the steps of displaying a first image in response to a shooting operation of a user; the first image is generated by fusing a second long exposure image frame and a second short exposure image frame; the exposure value of the second long-exposure image frame is a third exposure value, and the second short-exposure image frame is obtained after exposure compensation is carried out by adopting the target gray-scale value; wherein the third exposure value is obtained by adopting an automatic exposure AE algorithm, and the target gray-scale value is obtained based on the relationship between the gray-scale value of the image frame and the number of pixels.

The embodiment of the invention discloses an image processing method and device, equipment and a storage medium, which can be applied to the field of image processing, and the method comprises the following steps: determining a to-be-processed image shot by target equipment; determining an average brightness value of the to-be-processed image according to channel values of all color channels of each pixel point of the to-be-processed image in response to the preset image elements included in the to-be-processed image; determining a predicted color cast coefficient of the to-be-processed image according to the average brightness value of the to-be-processed image, wherein the predicted color cast coefficient of the to-be-processed image is used for representing the predicted color cast degree of the to-be-processed image relative to the reference image; and performing white balance processing on the to-be-processed image according to the predicted color cast coefficient of the to-be-processed image to obtain a target image. According to the embodiment of the invention, white balance processing can be quickly carried out on the to-be-processed image, and the applicability is high.

To provide a lens filter capable of suppressing the occurrence of light pollution and emphasizing point light sources such as stars. [Solution] The lens filter 10 is made of colored glass 1 and has a pattern 4 with a diffusion effect on at least the front surface 2. By using this lens filter 10, it is possible to prevent light pollution that occurs during photography, suppress color casts, make the night sky look clear and contrasty, adjust the color to suit the color of the night sky, clearly express the brightness of stars, and emphasize point light sources such as stars.

This application provides a color correction method, apparatus, device, medium, and product for a screen, the screen including a 2D screen and a lens layer; the method includes: acquiring a test image of the screen and the grayscale values ​​of sub-pixels in the test image; searching for color correction parameters at different observation positions to obtain color correction parameters at the current observation position; wherein, the color correction parameters at the observation position characterize the difference between the grayscale value of each sub-pixel and the actual pixel value at that observation position; and correcting the grayscale values ​​of sub-pixels in the test image according to the color correction parameters at the current observation position of at least one user. The solution of this application is used to correct color cast in 3D displays.

The application discloses a method for solving color deviation of a three-color Mini LED backlight liquid crystal display device and a liquid crystal display device, and relates to the technical field of liquid crystal display, and comprises the following steps: adjusting RGB backlight currents of a white field, recording a set of RGB backlight current ratios when color coordinates of the white color reach design target values; adjusting RGB backlight currents of red, green and blue single-color fields respectively, recording a second set of RGB backlight current ratios, so that the RGB synthesis obtains the design target values, and obtaining coordinate points W, R, G and B of the white color, the red color, the green color and the blue color on a CIE chromaticity diagram respectively; performing segmentation processing on a to-be-displayed image, counting average image color coordinates of each block as to-be-displayed colors, obtaining a coordinate point C of the to-be-displayed colors on the CIE chromaticity diagram, and calculating RGB current values of backlight of the block according to relative positions of C, R, G, B and W and the two sets of RGB backlight current ratios. The application can guarantee a color gamut and solve the color deviation phenomenon.

The application provides a RAW domain non-local mean image denoising method, comprising the following steps: S1, collecting a RAW image by a sensor; S2, dividing the image into N channels, such as R, Gr, Gb and B channels according to an actual Bayer format; S3, performing non-local mean filtering on each channel; further comprising: S301, calculating the similarity between each channel pixel point and the center pixel point of a neighborhood window; S302, calculating the weight according to the similarity information; S303, calculating the filtering result of each pixel point in each channel according to the weight; S4, merging the results of each channel after filtering into a RAW image, and outputting the result. The application utilizes the original characteristics of noise to perform image filtering in the RAW domain, reduces the difficulty of noise suppression, and has smaller side effects under the premise of achieving the same filtering effect; the non-local mean filtering is adopted, so that the problems of pattern noise after filtering, and false color and color cast caused by unbalanced channel filtering results are avoided.

A method and device for image quality assessment. The method comprises: obtaining a first image; performing quality assessment on the first image to obtain a comprehensive assessment result and a problem type assessment result; wherein the comprehensive assessment result is used to indicate a comprehensive quality level of the first image, and the problem type assessment result is used to indicate a type of problem existing on the first image, the problem type comprising at least one of overexposure, underexposure, blur, color cast, noise, glare, reflection or tree shadow; and determining a first quality level of the first image according to the comprehensive assessment result and the problem type assessment result. In this way, the accuracy of image quality assessment can be improved.

The application is suitable for the technical field of display screens, and provides a color deviation correction method, device, equipment and readable storage medium. The color deviation correction method specifically comprises: obtaining a display image obtained by a first acquisition device shooting a first display screen, the display image comprising at least one image region, each image region corresponding to a display sub-region of the first display screen, and each display sub-region forming a deflection angle with the first acquisition device; determining current optical information of each image region; determining a gain coefficient of the corresponding deflection angle according to target optical information and the current optical information of each image region, the gain coefficient being used for color deviation correction of an image collected by a second acquisition device or an image displayed by a second display screen. The embodiment of the application can improve the efficiency of color deviation correction.

The invention provides a pixel arrangement structure, a display panel, a driving method of the display panel, a display device and a mask group. The pixel arrangement structure comprises a plurality of basic pixel units which are arranged in an array mode, each basic pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel, and the first sub-pixel, the second sub-pixel and the third sub-pixel are sub-pixels of different colors. The third sub-pixel and the fourth sub-pixel are sub-pixels with the same color; one of the third sub-pixel and the fourth sub-pixel comprises a single light-emitting layer, the other one of the third sub-pixel and the fourth sub-pixel comprises at least two sub-light-emitting layers which are arranged in a laminated mode, and a charge generation layer is arranged between every two adjacent sub-light-emitting layers. According to the pixel arrangement structure, the problem of color cast of a white picture under low brightness after a reliability test is solved, and meanwhile, the problem of a dark field caused by extinguishment of some pixels can be eliminated, so that the display effect of the display panel is improved, and the yield and the product competitiveness of the display panel are improved.

The invention relates to an image white balance processing method and device and computer equipment. The method comprises the following steps: acquiring multiple frames of target images to be merged; according to the image information of each frame of target image, determining a global automatic white balance gain and a gain weight of the corresponding frame of target image; performing weighting processing on the global automatic white balance gain of the multiple frames of target images by adopting the gain weights of the multiple frames of target images to obtain a target gain mapping graph; and according to the target gain mapping graph, generating a target merged image after white balance processing corresponding to the multiple frames of target images. By adopting the method, the problem of color cast in the combined image of multiple frames of images can be solved, and the image quality and the application effect of the combined image are improved.

An illustrative device can determine a color cast metric for an image frame captured by an image capture system. The color cast metric can indicate an extent to which the image frame is cast to a particular color. Based on the color cast metric and an adaptive target control function, the device can determine a frame auto exposure target. Based on the frame auto exposure target, the device can update one or more auto exposure parameters for use by the image capture system in capturing additional image frames. Corresponding devices, systems, and methods for managing auto exposure of image frames are also disclosed.

The application provides a display panel and a preparation method thereof and a display device. The display panel comprises a bearing substrate, a pixel definition layer and a color conversion layer. The pixel definition layer is provided with scattering particles. The pixel definition layer is arranged on one side of the bearing substrate and is arranged in an array to form a plurality of opening areas. The color conversion layer comprises a plurality of color conversion parts. The color conversion parts are arranged on one side of the bearing substrate and are arranged in the opening areas. The size of the pixel definition layer at the end far from the bearing substrate is greater than the size of the pixel definition layer at the end close to the bearing substrate. The pixel definition layer forms an inverted trapezoidal structure with a width decreasing from top to bottom. The inclined side wall of the inverted trapezoidal structure corresponds to a light blocking barrier. The light rays with a large angle are blocked by the inclined side wall, so that the light rays can be prevented from entering adjacent pixels. The display panel can be prevented from having the phenomena of light crosstalk, mixed light, color deviation at a large viewing angle and the like, and the display effect of the display panel is improved.

Embodiments of the present application disclose an image processing method and device, the method comprising: detecting a face region in an image; adjusting an exposure value of the detected face region to be within a preset exposure range interval, wherein the exposure value within the preset exposure range interval does not cause color deviation of the face region; performing white balance calibration on the face region after the exposure value adjustment according to face color imaging standard data to obtain a processed image, wherein the face color imaging standard data is used to represent color imaging states of faces with different skin colors under ideal lighting conditions. The technical solution of the embodiments of the present application can automatically perform white balance calibration on an image based on face color, and can restore the color of a face in an image collected under a complex lighting environment, thereby avoiding the problem of face payment failure.

A light source of a photographing environment in which the electronic device is located is a flicker light source. The method includes: running a camera application in the electronic device; displaying a first image, where first exposure time is less than first duration, and the first image includes banding and / or a color cast image area; detecting a first operation; obtaining a second image in response to the first operation, where second exposure time is an integer multiple of the first duration; obtaining a color transformation matrix and / or a brightness parameter based on the first image and the second image; performing first image processing on the first image based on the color transformation matrix and / or the brightness parameter, to obtain a third image, where the third image is an image obtained by removing the banding and / or the color cast image area; and displaying or saving the third image.

The application is an underwater image enhancement method based on frequency domain and space domain joint processing, comprising: collecting public underwater image data set, searching the optimal background area of the collected underwater image by using the quadtree method, and then obtaining the maximum attenuation channel and the minimum attenuation channel difference of the optimal background area; comparing the attenuation channel difference distribution interval statistics with the color corrected image channel difference to obtain the underwater image color deviation factor threshold; using the improved channel compensation method to compensate different color deviation images to realize image color correction; using the improved homomorphic filtering method to perform contrast enhancement processing on the image; finally, fusing the color corrected image and the contrast enhanced image in the Lab color space to obtain the final color corrected and clear underwater enhanced image. The application realizes adaptive correction of underwater image color, contrast enhancement, detail enhancement and color restoration of underwater image.

The application relates to a white field chroma compensation coefficient prediction, optimization method and LED screen display control method, relates to the technical field of LED display, and discloses a white field chroma compensation coefficient prediction, optimization method and LED screen display control method. The existing white field color deviation correction technology has the problems of display difference between real pixels and virtual pixels, optical drift under long-term operation, high cost and inaccurate color deviation repair. The chroma distribution of each region in the white field display state is measured and analyzed, the compensation function type is selected according to the region characteristics, the internal parameters of the corresponding compensation function are judged according to the color deviation type, and then the local chroma compensation model is established; the compensation coefficient is optimized based on the feedback control closed-loop optimization method, the chroma compensation model continuously matches the actual optical state, and self-learning type display consistency control is realized; the display control of the LED screen is chroma compensation in the signal domain, and no additional hardware current adjustment module is needed. The method disclosed by the application is suitable for white field color deviation correction in Micro / Mini and other LED display systems.

The application relates to a light-emitting piece, a display unit and a display device, comprising the following steps: defining the direction from top to bottom of a lamp plate in an installed state as a first direction, the direction from bottom to top of the lamp plate as a second direction, and the left-right direction of the lamp plate as a third direction; and arranging a first light-emitting unit and a second light-emitting unit on the lamp plate along the third direction in sequence, wherein the first light-emitting unit and the second light-emitting unit both comprise first lamp beads, second lamp beads and third lamp beads, the first lamp beads, the second lamp beads and the third lamp beads of the first light-emitting unit are arranged in sequence along the first direction, and the first lamp beads, the second lamp beads and the third lamp beads of the second light-emitting unit are arranged in sequence along the second direction. When the light-emitting piece is observed from the top or the bottom, the first lamp beads and the third lamp beads can be observed at the same time, so that visual angle color deviation phenomenon does not occur in vision, and the display effect of the display device and the viewing experience of a user are ensured.