233 results about "Colour cast" patented technology

The invention relates to display equipment which comprises a liquid crystal display panel, a backlight module and a control circuit. A backlight partition of the backlight module comprises at least one light-emitting unit, the light-emitting unit comprises a first blue light-emitting chip, a green light-emitting chip and a red light-emitting module, and the red light-emitting module comprises a second blue light-emitting chip and a red phosphor located above the second blue light-emitting chip. The control circuit is configured to obtain image frame data, determine input gray-scale values of all color pixels in an image partition corresponding to the backlight partition, and generate all color backlight values of the partition; and driving the green and second blue light-emitting chips based on the green and red backlight values, and not lightening the first blue light-emitting chip or driving the first blue light-emitting chip to carry out blue light brightness compensation based on a comparison algorithm processing result of the blue and red backlight values, thereby improving the display color cast problem. And meanwhile, driving data are generated based on the input gray-scale values of the color pixels to drive the panel, so that the display effect of the display equipment is improved.

The invention discloses a display device and a defect pixel compensation method of the display device, the display device comprises a display panel and a processor, the processor determines the defect type of a defect sub-pixel and an initial gray scale value corresponding to the defect sub-pixel; determining at least one target gray-scale value according to the defect type of the defective sub-pixel, the initial gray-scale value and a plurality of to-be-displayed gray-scale values corresponding to the defective pixel to which the defective sub-pixel belongs; based on the at least one target gray-scale value, updating the to-be-displayed gray-scale values corresponding to other sub-pixels in the defective pixels; and the display panel displays the to-be-displayed image after the plurality of to-be-displayed gray-scale values corresponding to the defect pixels are updated. According to the target gray-scale value, the to-be-displayed gray-scale values of other sub-pixels except the defective sub-pixels in the defective pixels are updated, so that the display color cast problem caused by the defective sub-pixels is compensated, the perceptibility of the defective sub-pixels in human eyes is reduced, and the display effect of the display device is improved.

The utility model relates to the technical field of COB display modules, in particular to a pixel arrangement structure for solving the large-view-angle color cast phenomenon of the COB display module, the COB display module comprises a plurality of pixels distributed on a welding plate in an array mode, each pixel comprises a light-emitting chip of at least one primary color, and the light-emitting chips are arranged on the welding plate. The positive electrode side light-emitting quantity and the negative electrode side light-emitting quantity of the light-emitting chips of at least one primary color are different, and the positive electrodes and the negative electrodes of the adjacent light-emitting chips with different light-emitting quantities in transverse distribution and / or longitudinal distribution are alternately arranged, so that the light-emitting quantities of the two sides of the COB display module observed at a large visual angle are basically consistent; therefore, the large-viewing-angle color cast phenomenon of the COB display module is greatly reduced.

The invention provides a portrait skin color detection method and device, and the method can detect whether the skin color of a human face in a to-be-detected image is cast or not by comparing the chromatic value of a skin color region of the human face in the to-be-detected image with a standard chromatic value range. The method comprises the following steps: performing face detection and face segmentation extraction on a to-be-detected image to obtain key point data in a face in the to-be-detected image; a target image is obtained based on the key point data corresponding to the five sense organs of the face in the to-be-detected image and the key point data of the face contour, and the target image does not include the five sense organs; converting the color values of the plurality of pixel points of the target image into chromatic values of the target image; based on the chromatic value of the target image and a standard chromatic value range parameter, whether the skin color of the face in the to-be-detected image has color cast or not is judged, and the standard chromatic value range is determined based on the chromatic value of the skin color area of the face in multiple first images shot under multiple different light sources.

The invention discloses an image processing method, electronic equipment, a storage medium and a chip. The method is applied to the electronic equipment comprising a first camera and a second camera, and comprises the steps that a first original image of a first scene is collected through the first camera (such as a front camera), and the first original image is an image comprising a face area; obtaining a first white balance parameter according to the face region in the first original image; acquiring a second original image of the second scene through a second camera (such as a rear camera), wherein the light source of the second scene corresponding to the second original image is the same as the light source of the first scene corresponding to the first original image; and performing white balance processing on the second original image according to the first white balance parameter to obtain a target image. Based on the technical scheme provided by the invention, the color cast of the processed image is relatively small, the color visual habit of human eyes is better met, and the user experience is improved.

An image processing method and an image processing device are provided. The image processing method includes performing at least one of a scratch repairing step, a dead point repairing step, a denoising step and a color cast correcting step on a to-be-processed video frame. According to the embodiments of the present disclosure, it is able to repair a scratch and a dead point, remove a noise and / or correct color cast for a video frame, thereby to improve a display effect of the video frame.

The invention discloses an indoor scene-oriented color constancy algorithm error evaluation and prediction method and system, and belongs to the technical field of computers and information services. The method comprises the following steps: acquiring an indoor scene color constancy data set containing portrait content; acquiring real light source color information of the color cast image in the data set; obtaining estimated light source color information calculated based on a to-be-evaluated color constancy algorithm; performing color space conversion on the light source color information; and for a to-be-evaluated color constancy algorithm, according to the real light source color attribute, the estimated light source color attribute and the color constancy algorithm error evaluation quantification model, obtaining a corresponding estimated value, and realizing characterization of light source color estimation accuracy of different color constancy algorithms. According to the invention, high-precision and high-stability error evaluation of a color constancy algorithm for an indoor scene containing portrait content is realized.

The invention discloses an intelligent dot matrix electronic display screen control system, relates to the technical field of electronic display screens, and solves the technical problems that color adjustment and brightness adjustment are inaccurate and are difficult to adapt to different scene requirements. Duty ratio adjustment for limiting a brightness change threshold value is adopted for a low-gray-scale area, the jump problem caused by traditional linear distribution is avoided, dark part details are displayed more smoothly, different reasons such as overall color cast, local color cast and dynamic content color cast are distinguished through a color adjustment control unit, a differential adjustment strategy is adopted, the color rendition degree is improved, and the color rendition effect is improved. According to the method, pixel-level partition detection is adopted, abnormal pixels are accurately screened, a compensation coefficient is calculated, the problem of local brightness deviation is solved, a thermal attenuation coefficient is introduced in combination with the relation between temperature and brightness, the compensation coefficient is dynamically corrected, and the brightness uniformity error in a high-temperature environment is reduced.

The invention provides a region weight-based color cast identification method, device and equipment and a readable storage medium. The method comprises the following steps of: obtaining a certificate image and a plurality of historical certificate images; processing the certificate image through the first network layer to obtain a segmented region image in the certificate image; processing the segmented region image through a second network layer to obtain a first image feature; and determining a color cast identification result of the certificate image according to the first image feature and a second image feature corresponding to the historical certificate image. The segmented region images corresponding to different main body information in the certificate image are obtained through processing, the image features of the corresponding regions are obtained, and compared with color cast identification from the whole image, color cast feature analysis is carried out based on different significance of different segmented regions, so that the identification accuracy is improved. And especially in a color cast recognition scene in which a portrait base map is lacked as a comparison reference, a better color cast recognition effect can be ensured.

The invention provides an image color correction method, a storage medium and electronic equipment. The method comprises the following steps: acquiring an original image and an infrared light supplementing image in the same scene; positioning a target area in the original image according to the infrared light supplementing image; the target area is an area which generates color cast due to infrared light intensity reflection in the original image; and performing color correction on the target area in the original image to obtain a corrected image. The color distortion caused by the fact that the original image is limited by hardware can be improved, and the authenticity of the original image is enhanced.

The invention relates to the field of image processing, and provides an image processing method and electronic equipment, the method is applied to the electronic equipment, a light source of a shooting environment where the electronic equipment is located is a stroboscopic light source, and the method comprises the following steps: running a camera application program of the electronic equipment; a first image is displayed, the first exposure time is shorter than the first duration, and the first image comprises stripes and / or color cast image areas; detecting a first operation; in response to the first operation, obtaining a second image, the second exposure time being an integral multiple of the first duration; obtaining a color conversion 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 conversion matrix and / or the brightness parameter to obtain a third image, the third image being an image in which stripes and / or color cast image areas are removed; and displaying or storing the third image. Based on the scheme of the invention, stripes and / or local color cast in the image can be removed when the moving object is shot, and the image quality is improved.

The invention discloses display equipment, and relates to the technical field of display equipment, and the method comprises the steps: determining a reference backlight mean value of each color channel in three color channels according to backlight data of a target image; according to preset backlight power, weighted average processing is carried out on the reference backlight mean values of the three color channels, a target backlight mean value is obtained, and the preset backlight power is used for representing backlight power corresponding to each color channel when the display panel presents the preset image; determining a first backlight current corresponding to each color channel according to the target backlight mean value and preset mapping data; and controlling the display panel to present the target image, and driving each light-emitting chip in the light-emitting unit to emit light through the backlight driving circuit based on the first backlight current corresponding to each color channel. The problem of display color cast of the display equipment can be solved, so that the display quality of the display equipment is improved.

The invention discloses an image processing method, a color picking device and a storage medium, and relates to the technical field of image processing, and the disclosed image processing method comprises the steps: obtaining a to-be-processed image, and dividing the to-be-processed image into a plurality of sub-processed images; determining a white balance parameter corresponding to each sub-processed image; according to the brightness of each sub-processing image, carrying out differential processing on the white balance parameter corresponding to the corresponding sub-processing image; and carrying out white balance adjustment on colors corresponding to the sub-processed images sent to the display equipment based on the white balance parameters after differential processing. The technical problem of low image processing quality caused by the phenomena of local color cast and detail missing of the image when a global white balance parameter is adopted for adjustment of the existing image is solved, local color cast of the whole image can be eliminated through the technical scheme, meanwhile, image details are reserved, and the image processing quality is improved.

The invention provides a color cast correction method and device for video conference equipment, equipment and a storage medium, and relates to the technical field of image processing, and the method comprises the steps: obtaining a lamp bead working current corresponding to the video conference equipment and the pixel size of at least one image; determining a target distance between the target user and the video conference equipment based on each pixel size; based on the lamp bead working current, the target distance and the color cast value under the target distance, the color deviation degree corresponding to the color cast value under the target distance is determined; the color cast value is an RGB value corresponding to a camera module on the video conference equipment; based on the color deviation degree and the color cast value, a target correction RGB value corresponding to the camera module is determined, and the target correction RGB value is used for conducting color compensation when the camera module counts the automatic white balance information. According to the invention, adaptive compensation of the RGB value of the camera module can be realized, and the overall image effect of the video conference equipment is improved.

The invention relates to a display device, a control method of the display device, a computer readable storage medium and a program product. The display device comprises a display panel, a backlight module and a controller, and the controller determines a target average image level based on the average image level of each light-emitting channel after obtaining the average image level of each light-emitting channel in the backlight module. And determining the average image level of the to-be-adjusted light-emitting channel of which the average image level is greater than a preset lower limit value as a target average image level. Therefore, the average image level of the light-emitting channel to be adjusted can be unified into the target average image level, the problem of display color cast caused by the average image level of the light-emitting channel is solved, and the display effect is improved.

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 discloses a white field chromaticity compensation coefficient prediction and optimization method and a display control method of an LED screen, relates to the technical field of LED display, and aims to solve the problems that display differences exist between real pixels and virtual pixels, optical drifting is generated under long-term operation, the cost is high and color cast repair is inaccurate in the existing white field color cast correction technology. Measuring and analyzing chromaticity distribution of each region in a white field display state, selecting a compensation function type according to region characteristics, judging internal parameters of a corresponding compensation function according to a color cast type, and further establishing a local chromaticity compensation model; compensation coefficient optimization is carried out based on a feedback control closed-loop optimization method, so that a chromaticity compensation model continuously fits an actual optical state, and self-learning type display consistency control is realized; the display control of the LED screen is that chromaticity compensation is carried out in a signal domain, and an additional hardware current adjusting module is not needed. The method provided by the invention is suitable for white field color cast correction in Micro / Mini and other LED display systems.

The invention relates to display equipment which comprises a liquid crystal display panel, a backlight module and a control circuit. A backlight partition of the backlight module comprises at least one light-emitting unit, the light-emitting unit comprises a red light-emitting chip, a green light-emitting chip and a light-emitting module, and the light-emitting module comprises a blue light-emitting chip and a red phosphor located above the blue light-emitting chip. The control circuit is configured to obtain image frame data, determine input gray-scale values of all color pixels in an image partition corresponding to the backlight partition, and generate all color backlight values of the partition; and driving the green and blue light-emitting chips based on the green and blue backlight values, and not lightening the red light-emitting chip or driving the red light-emitting chip to perform red light brightness compensation based on a comparison algorithm processing result of the blue and red backlight values, thereby improving the display color cast problem. And meanwhile, driving data are generated based on the input gray-scale values of the color pixels to drive the panel, so that the display effect of the display equipment is 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 invention relates to laminated glass, a head-up display system and a vehicle. The laminated glass comprises a first glass plate, a second glass plate, a middle layer and an infrared reflecting layer; the projection display area is used for reflecting projection light, and the range where the projection display area is located is at least partially covered by the infrared reflecting layer; an inflection point wavelength F lambda exists in a reflection spectrum curve of the projection display area, the inflection point wavelength F lambda is located in the wave band range of 615-700 nm, and the maximum reflectivity of the projection display area in the wave band range from 460 nm to the inflection point wavelength F lambda is smaller than the maximum reflectivity of the projection display area in the wave band range from the inflection point wavelength F lambda to 780 nm; the inflection point wavelength F lambda is greater than the wavelength corresponding to the red light emission peak in the emission spectrum curve of the projection light. The selection of the inflection point wavelength F lambda can ensure that the laminated glass achieves a heat insulation effect. Meanwhile, the spectral band of the projection light does not coincide with or slightly coincide with the high-reflectivity band of the infrared reflecting layer, and the color cast abnormity of the image is reduced or even eliminated.

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.

A virtual pixel rendering method, a data transmission system, a control system and an electronic device relate to the field of display technology and solve the problem of display color cast. The method is implemented based on an RGB triangle arrangement structure, in which the sub-pixels in the same column are of the same primary color, and the sub-pixels in the same row are arranged in a circular pattern of three primary colors. Each sub-pixel forms a triangle structure with two adjacent pixels of different primary colors in the previous row, and forms a triangle structure with two adjacent pixels of different primary colors in the next row; each triangle structure is used as a display unit so that each sub-pixel is reused by six display units; the display data of each sub-pixel is the average of the original data of the corresponding pixel point of the sub-pixel in the image source and the corresponding pixel point in the image source in the left and right columns; or it is the weighted average of the original data of the corresponding pixel point of the sub-pixel in the image source and the corresponding pixel point in the image source in the left and right columns. The present invention can be applied to solve the color cast problem in a virtual display device.

The invention provides a stereo garage security management and control system and method based on fuzzy control, and belongs to the technical field of security system monitoring. Comprising a plurality of cameras, a router, a host and a fuzzy controller, the number of the cameras is consistent with the number of garages in the stereo garage, each camera shoots RGB images according to a preset shooting interval, and the shot RGB images are uploaded to the host through the router; the host is used for performing color cast factor difference prediction on the received RGB image and sending a prediction result to the fuzzy controller; and the fuzzy controller is used for outputting a corresponding adjustment value according to the set fuzzy control rule and controlling security and protection equipment in the stereo garage. Whether a fire disaster exists in the stereo garage or not can be effectively monitored based on the security and protection management and control system, meanwhile, fire extinguishing can be conducted in different control modes according to the actual situation of the fire disaster, and resource waste is reduced while effective fire extinguishing is guaranteed.

The invention relates to a white balance compensation method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a first white balance parameter during shooting under current ambient light, wherein the first white balance parameter is determined based on a white balance parameter when main flash shooting of a flash lamp is turned on and a white balance parameter when the flash lamp is turned off; acquiring a second white balance parameter during shooting under the current ambient light, wherein the second white balance parameter is a white balance parameter when a flash lamp is turned on for pre-flash shooting; compensating the second white balance parameter based on a pre-flashing compensation function to obtain a third white balance parameter, the pre-flashing compensation function being obtained by fitting white balance parameters obtained during shooting under different ambient lights; and determining a target white balance parameter based on the first white balance parameter and the third white balance parameter, the target white balance parameter being used for performing white balance processing on the to-be-processed image. The method improves the accuracy of white balance of the flash lamp, and avoids the problem of color cast during shooting of the flash lamp.

The invention provides a light-emitting device preparation method, a light-emitting device and a display panel, and the method comprises the steps: preparing a suspension structure on a driving backboard, enabling the suspension structure to be prepared on the driving backboard through a weak connection structure, and enabling the suspension structure to be arranged between two adjacent pixel units, any first planar projection of the suspension structure comprises a second planar projection; preparing a light-emitting layer on the driving back plate; the suspension structure is disconnected from the weak connection structure, and the suspension structure is removed; and preparing the residual film layer on the light-emitting layer. By arranging the overhanging structure, the connection of the light-emitting materials of the two adjacent pixel units can be cut off during the preparation of the light-emitting layer, color cast is avoided, and after the preparation of the light-emitting layer is completed, the overhanging structure is removed, so that the influence of the overhanging structure on subsequent packaging can be avoided.

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 present application provides a display panel and a display device. The display panel includes a plurality of pixel units, each pixel unit includes a plurality of sub-pixels, and the plurality of sub-pixels are divided into a first type of sub-pixels and a second type of sub-pixels. The brightness life of the first type of sub-pixels is shorter than the brightness life of the second type of sub-pixels. Each sub-pixel includes a cathode, an anode, and a light-emitting layer and a carrier transport layer located between the cathode and the anode. In addition, the carrier mobility of the carrier transport layer of the first type of sub-pixel is different from the carrier mobility of the carrier transport layer of the second type of sub-pixel. By adjusting the carrier mobility, the brightness difference between sub-pixels of different types can be reduced, and the problem of display color cast can be improved.

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.