183 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 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 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 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 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.

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.

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.

The invention discloses a display panel and a display device, the display panel comprises a substrate, a pixel definition layer, a light emitting unit, a compensation light emitting structure and an excitation layer, the light emitting unit is arranged on the substrate and is arranged in an opening area; the compensation light-emitting structures are arranged on the pixel definition layer and extend from a non-opening area to the opening area, and each compensation light-emitting structure is arranged around one light-emitting unit; the excitation layer is arranged under the compensation light-emitting structure and used for emitting ultraviolet light to the compensation light-emitting structure, and the compensation light-emitting structure emits visible light under excitation of the ultraviolet light; wherein the compensation light-emitting structure is made of a lanthanide series metal organic framework material. Light compensation is carried out on the light-emitting unit through the compensation light-emitting structure, the coordinates of the white points are adjusted, the offset color points are recovered, and therefore color cast caused by color point offset of the light-emitting unit is improved.

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.

The present invention provides a color constancy method, system and storage medium based on polarization parameters, which relates to the technical fields of computer vision, image processing and color enhancement. First, a color cast image and a polarization image corresponding to the color cast image are collected, then the Stokes parameters of the polarization image are calculated, the polarization degree values corresponding to each pixel point are obtained based on the Stokes parameters, and then the effective pixel points of the color cast image are extracted through the polarization degree values. Then, the pseudo-gray pixels and gray pixels in the effective pixel points are distinguished and the gray pixel weights are obtained, and then the values of the gray pixels in the color cast image are weighted and averaged to obtain a global illumination color estimation for eliminating the illumination color of the color cast image. Finally, a colorless cast image is obtained, which can effectively eliminate the adverse effects caused by pseudo-gray pixels in the image on the illumination color estimation, and improve the accuracy and robustness of the color constancy algorithm.