137 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 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 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 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.

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 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.

Embodiments of the present application provide an image processing method and device and electronic equipment, and relate to the technical field of image processing. An image to be processed is obtained. The color cast intensity of the image to be processed is determined according to the distribution of specified pixel values of each pixel point in the image to be processed. If the color cast intensity meets a preset color cast requirement, the color cast type of the image to be processed is determined, and the color cast direction of the image to be processed is determined based on the distribution. The color cast type includes global color cast or local color cast. A color cast correction strategy matched with the color cast type and the color cast direction is used to perform color cast correction on the image to be processed to obtain a target image. Compared with related technologies, the scheme provided in the embodiments of the present application can improve the image processing efficiency.

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.

The embodiment of the present application discloses a kind of image processing method and device, the method comprises: obtaining the current pixel component of current pixel position;Current pixel component includes current pixel luminance component and current pixel first chroma component;Obtain the peripheral pixel region and its peripheral pixel component of current pixel position;Peripheral pixel component includes peripheral pixel luminance component, peripheral pixel first chroma component and peripheral pixel second chroma component;According to current pixel luminance component and peripheral pixel luminance component, the luminance component classification of current pixel position is carried out, according to current pixel first chroma component and peripheral pixel first chroma component, the chroma component classification of current pixel position is carried out;According to luminance component classification result and chroma component classification result, using peripheral pixel second chroma component restores current pixel second chroma component.The embodiment scheme improves video stream image effect without changing system bandwidth, reduces the color phenomenon of text edge caused by interpolation, color cast.

The present application discloses a display panel and a display device. The display panel includes: a substrate; a light-emitting device layer, located on one side of the substrate, including a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element and a second light-emitting element with inconsistent light emission colors; a compensation layer, located between the light-emitting device layer and the substrate, including a plurality of compensation units, the orthographic projection of the compensation unit at least partially overlaps with the orthographic projection of the anode of the light-emitting element; the compensation capacitance formed between the anode of the light-emitting element and the compensation unit has a correlation with the orthographic projection overlapping area; the orthographic projection overlapping area of ​​the anode of the first light-emitting element and the first compensation unit is S1, and the orthographic projection overlapping area of ​​the anode of the second light-emitting element and the second compensation unit is S2; S1≠S2. According to the embodiment of the present application, the capacitance difference between light-emitting elements of different light emission colors can be adjusted, so that the brightness difference of light-emitting elements of different colors at low grayscale is reduced, and the color cast problem at low grayscale is 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.

The utility model provides a pixel arrangement structure, a 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.

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 for judging whether burning data of a camera module is correctly loaded or not comprises the steps that 1, the camera module is automatically exposed after being lightened, the G value is adjusted to be within the range of 160-180 for an MTK platform, and the G value is adjusted to be within the range of 190-210 for a high-pass platform; 2, setting AWB parameters and judging whether picture colors reach expected color cast or not, specifically, for an MTK platform, independently setting an R channel and keeping GR, GB and B channels normal burning or independently setting the value of the B channel and keeping GR, GB and R channels normal burning, and capturing a Raw graph; independently setting the value of R / G and keeping normal burning of B / G and Gb / Gr, or independently setting the value of B / G and keeping normal burning of R / G and Gb / Gr; capturing a Raw graph, judging whether the color of the picture reaches the expected color cast or not, if so, judging that the OTP calling is successful, and otherwise, judging that the OPT calling is failed; and step 3, if the OTP is successfully called, indicating that the burning data is correctly loaded.