298 results about "Gamut" patented technology

The invention discloses a brightness and chrominance consistency correction method and system for an LED spliced screen, and the method comprises the steps: firstly recognizing the batch features of a module, dividing the batch features into correction partitions, and respectively collecting the original brightness and chrominance data of a high-gray linear region and a low-gray nonlinear region; and then, calculating the geometric intersection of the original color gamuts of all the partitions to determine the maximum common target color gamut, and eliminating the metamerism phenomenon caused by multi-batch mixed use from the physical level. Then, constructing a non-linear dual-order correction model, and generating a correction coefficient set containing a main linear conversion matrix and a low-gray-scale non-linear offset item; when the control system runs, the linear matrix is dynamically called according to the input gray level, and bias compensation is superposed. According to the invention, the problems of cross-batch visual angle chromatic aberration and color temperature drift and pocking marks under low gray level of the spliced screen are effectively solved, and the high-fidelity display consistency of the full gray level is realized.

The invention relates to the technical field of medical image processing, in particular to an enterostomy mucous membrane state evaluation system based on color comparison, which comprises a multi-modal data acquisition module used for acquiring and analyzing a mucous membrane image sequence, ambient light characteristics and basic physiological data and generating acquisition data records with aligned timestamps; and the individualized benchmark modeling module is used for establishing a patient specific color reference benchmark through HSL color space analysis on the basis of the collected data records and the preoperative physiological indexes, and generating an initial adaptive color gamut threshold model. According to the method, the specific initial color reference is established for each patient, and the sliding window algorithm is combined to continuously monitor the color gamut drift so as to dynamically update the reference, so that accurate self-adaption to individual physiological differences of the patients and postoperative slow recovery changes is realized, and therefore, the objectivity and accuracy of evaluation are greatly improved; the problem of misjudgment caused by individual differences or normal evolution of physiological states in a traditional fixed threshold value method is effectively avoided.

The invention relates to the technical field of optical elements, in particular to a structural color regulation and control device based on silicon nitride metasurface continuous domain bound state enhancement, which comprises a substrate and a metasurface structure arranged on the substrate, the substrate is a silicon dioxide substrate, and the metasurface structure is composed of a plurality of nano-disks which are periodically arranged in a two-dimensional manner. And a circular air hole is formed in the nano plate. Based on the narrow linewidth resonance characteristic of the quasi-BIC, the structural color with high saturation and wide color gamut is realized; by utilizing strong polarization dependence, passive and dynamic regulation and control of color brightness can be realized through simple polarization rotation, and the structure does not need to be changed; silicon nitride has extremely low loss in a visible light band, good compatibility with a silicon dioxide substrate and a stable structure; a high-contrast polarization encryption pattern is easy to realize, and the application prospect in the fields of high-end anti-counterfeiting, information storage, dynamic display and the like is wide; the adopted micro-nano processing technology is standard and mature, and practical preparation and industrialization of the device are facilitated.

The invention discloses a full-color LED screen optical adjustment and intelligent energy-saving detection method, and relates to the field of LED screen adjustment and energy saving. Ambient light data is collected through a bionic distributed sensor network, and features such as illumination intensity and color temperature are extracted through PCA dimension reduction; constructing a human eye visual perception model based on the CIE chromaticity diagram, and introducing a visual adaptation factor to dynamically adjust color gamut mapping; dividing a screen dimming area, and calculating an optimal brightness value by adopting a local contrast enhancement algorithm; the RGB ratio is optimized through a genetic algorithm, and the color difference between the mixed spectrum and the target color gamut is minimized; power consumption is monitored in real time, an energy consumption prediction model is established, and an optimization strategy is triggered when a predicted value exceeds a threshold value. The color gamut coverage rate is high, the local contrast ratio is excellent, and the comprehensive energy-saving rate is greatly improved; blue light harm is reduced, screen flicker is eliminated, the visual comfort is improved, the functions of peep prevention and block chain energy consumption evidence storage are achieved, and the display quality, the energy efficiency performance and the use safety of the LED screen are comprehensively improved.

The invention discloses a low-illumination image enhancement method combining multi-channel parallel attention and cross fusion, and relates to the field of photoelectric display. In order to solve the problems of high model complexity, brightness and color gamut information coupling, artifact fusion and the like in low-illumination image enhancement, the invention provides a lightweight low-illumination image enhancement network, brightness and chrominance information are separated in a YCbCr color space, brightness structure features are extracted through a lightweight denoising module and a multi-head attention mechanism, and a low-illumination image is obtained. And a multi-channel parallel attention module (MCPA) is designed to enhance the chromaticity context modeling capability. According to the invention, a brightness-guided cross fusion module (LCA) is introduced, and cooperative enhancement of the structure and the color is realized through joint channel-space attention optimization. According to the method, a relatively high image quality index is obtained on multi-class public low-illumination data, meanwhile, the parameter quantity and the calculation quantity are remarkably reduced, and the method is suitable for edge device deployment. According to the method, color cast and fusion artifacts can be effectively inhibited, and the consistency of structural details and colors is improved.

The invention discloses a graph pattern generation method based on a Clarii graph, and relates to the technical field of information, and the method comprises the steps: constructing an extended fluorescent material calibration module, introducing a saturation critical light intensity reference value, and carrying out the calibration of the Clarii graph under the dual constraints of color temperature deviation distribution and brightness standard deviation; according to the method, the pattern contrast change condition is recognized through the adjusted pattern contrast, a correction index is formed, the LED backlight wavelength is corrected for the second time according to the correction index, pattern structure deviation information is fed back to a spectrum control link, and the color uniformity of the LED backlight is improved. According to the scheme, on the premise of ensuring uniform fluorescence response and inhibiting bright spots, dark spots and stripes, the Clariy pattern can be kept stable, clear and layered in an actual application environment.

A setting unit sets a first partial area and a second partial area in a first image. A conversion unit, in a case where the first image is determined to be an image obtained by scanning the printed image, executes color conversion processing for converting a first color, which is included in the first image and is defined by a first color gamut, into a second color, which is defined by a second color gamut. A first correction unit corrects a conversion parameter in the color conversion processing such that a color obtained by converting the first color is a color different from the second color. The first correction unit corrects, for the first partial area, the conversion parameter and corrects, for the second partial area, the conversion parameter.

The invention discloses a color consistency calibration system for AMOLED flexible display, which relates to the field of display and comprises a deformation sensing module, a color acquisition module, an aging state sensing and dynamic compensation module, a user personalized color gamut adaptation module, a data fusion processing module, a self-adaptive calibration algorithm module, a calibration execution module and a real-time feedback verification module. According to the AMOLED flexible display color consistency calibration system, screen body stress and deformation data are captured through deformation perception, the pixel attenuation state is monitored through aging perception, a personalized module adapts to user color preference, partition integrated calibration parameters are generated through data fusion and a self-adaptive algorithm, a closed loop is formed through calibration execution and real-time feedback, and the color consistency of the AMOLED flexible display is calibrated. According to the AMOLED flexible screen color consistency calibration method, the defects that deformation-aging composite drift is ignored and personalized adaptation is lacked in the prior art are overcome, full-scene and full-life-cycle color consistency calibration of the AMOLED flexible screen is achieved, accuracy and user experience are considered, and the AMOLED flexible screen color consistency calibration method is suitable for various flexible display terminals such as folding screens and curled screens.

The present invention provides a multi-color light-emitting system driving method and apparatus, and a backlight system. The multi-color light-emitting system driving method comprises: respectively performing centralized adjustment on the wavelengths of a plurality of light-emitting elements of each light-emitting color, so that the wavelengths of the plurality of light-emitting elements of each light-emitting color tend to be consistent; respectively performing consistency adjustment on the light-emitting brightness of the plurality of light-emitting elements of each light-emitting color, so that the light-emitting brightness of the plurality of light-emitting elements of each light-emitting color tends to be consistent; and mixing a plurality of light-emitting colors of light-emitting units according to a component ratio required by a target color temperature. In the technical solution of the present invention, by means of centralized adjustment of the wavelengths of the plurality of light-emitting elements of each light-emitting color, the light-emitting consistency is improved; furthermore, by means of brightness consistency adjustment, the uniformity is improved; the centralized adjustment of the wavelengths does not affect the inherent color gamut of the light-emitting elements, and the color gamut obtained after color mixing is wider; and color mixing according to the component ratio of the target color temperature achieves the maximum light-emitting brightness at a certain color temperature.

The invention provides a colorful Prussian blue film as well as a preparation method and application thereof. The preparation method comprises the following steps: placing a conductive material coated with a metal layer on the surface in a Prussian blue precursor solution, and growing a Prussian blue film layer on the surface of the metal layer in situ to obtain a Prussian blue film layer-metal layer-conductive material layer complex, namely the colorful Prussian blue film. The invention provides a colorful Prussian blue film which is characterized in that a metal layer is sputtered on the surface of conductive glass, on one hand, the problem of poor adhesion between Prussian blue and the conductive glass is solved, and on the other hand, Prussian blue grows on the surface of the metal layer in situ, so that a potential difference is formed between metal and iron ions, and the Prussian blue film is obtained. Further, prussian blue grows on the surface of the metal layer layer by layer, the multi-color film can be constructed by utilizing different thicknesses of the prussian blue layer, and the color of the multi-color film can be changed under the driving of voltage, so that the color gamut of the multi-color film is further enriched; the technical scheme provided by the invention has universality, and the preparation method is simple, low in cost and wide in application prospect.

In some examples, a computing device can include a memory resource storing instructions to cause a processor resource to receive, from a first virtual machine assigned a first color gamut, display characteristics of a first display, display characteristics of a second display, or both. In some examples, the instructions can cause the processor resource to receive, from a second virtual machine assigned a second color gamut, the display characteristics of the first display, the display characteristics of the second display, or both, and determine, based on the first color gamut, the second color gamut, and the display characteristics, a color gamut mapping for the first color gamut and the second color gamut. In some examples, the instructions can cause the processor resource to map the first color gamut to the first display and map the second color gamut to the second display based on the color gamut mapping.

The invention discloses a PWM frequency adjusting method, electronic equipment and a readable storage medium, and belongs to the technical field of terminals, the method comprises the following steps: receiving an interface switching operation, the interface switching operation being an operation of triggering the electronic equipment to switch between a first interface and a second interface; in response to the interface switching operation, the electronic device can display an interface transition effect corresponding to the interface switching operation and adjust the PWM frequency in the process of displaying the interface transition effect, and the interface transition effect comprises at least one of a transition animation, a color gamut change effect, an interface transparency change effect and a brightness change effect. According to the method and the device, the screen flash of the display screen caused by the adjustment of the PWM frequency is covered through the interface transition effect, and the display effect of the screen is improved.

The present application provides a display screen structure, comprising: a filter layer, comprising a plurality of strip-shaped pixel regions and a plurality of strip-shaped penetration regions, the plurality of strip-shaped pixel regions and the plurality of strip-shaped penetration regions are arranged alternately; and a reflection layer, corresponding to the plurality of strip-shaped penetration regions, so that the light incident from outside penetrates from the plurality of strip-shaped penetration regions, is reflected through the reflection layer, and then exits through the plurality of strip-shaped penetration regions. Through the specific pixel arrangement of the present application, the resolution and / or color gamut space can be improved.

To perform color mapping to a printing color gamut so as to reduce the degree Iga of color conversion caused by color conversion, and to perform appropriate mapping even when a printing original is a read original.SOLUTION: It is determined whether the first image is an image obtained by scanning a print image. When the first image is an image obtained by scanning a print image, color conversion processing for converting a first color and a second color included in the first image and defined by a first color gamut into a third color and a fourth color defined by a second color gamut different from the first color gamut is executed. When a color difference between the third color and the fourth color is smaller than a predetermined threshold, a conversion parameter in the color conversion processing is corrected so that a color obtained by converting the first color becomes a fifth color different from the third color, in which a color difference from the fourth color is larger than the color difference between the third color and the fourth color.SELECTED DRAWING: Figure 21

The invention relates to a color gamut mapping method and device, computer equipment, a chip and a chip module. The method comprises the steps of querying a pre-constructed color gamut boundary corresponding relation based on a target direction axis coordinate value in converted color coordinate values of a sampling point of a to-be-processed image and a chromaticity coordinate value of the sampling point, and obtaining an input color gamut boundary and an output color gamut boundary corresponding to the sampling point; according to the input color gamut boundary and the output color gamut boundary, mapping the color coordinate value to obtain a target color coordinate value corresponding to the sampling point; smoothing the target color coordinate value to obtain a processed target color coordinate value corresponding to the sampling point; and obtaining a target image corresponding to the to-be-processed image based on the processed target color coordinate value. By adopting the method, the color gamut mapping accuracy can be improved.

The invention discloses a screen brightness and chrominance correction method, and aims to solve the problem that the correction technology between different screens is difficult to implement by using a universal point-by-point correction method due to the limitation of hardware difference and target value setting in the screen brightness and chrominance correction technology in the prior art. The method comprises the following steps: carrying out lamp point positioning and sorting on a screen, traversing image coordinates of sorted LED lamp point pixels in the screen, and calculating imaging feature values of lamp points in a surface shooting camera; calibrating the relation between the characteristic value and the tristimulus value, and converting the characteristic value into the tristimulus value; the target brightness and the target color gamut are calculated according to the white balance, the correction coefficient of each LED lamp point pixel is calculated according to the tristimulus value, the target tristimulus value, the target color gamut and the cross-border ratio or the threshold value, and the defects in the prior art are effectively overcome. According to the method, the correction precision, efficiency and flexibility can be improved, the actual requirements of different screens are met, and the high-precision, high-efficiency and high-consistency screen brightness and chrominance correction effect is achieved.

The invention relates to a color processing method and apparatus, a device, a storage medium and a program product. The method comprises the steps of obtaining a first pixel value of a node in a native color gamut of a display device; performing conversion processing on the first pixel value of the node in the native color gamut based on a conversion function to obtain a second pixel value of the node in the native color gamut; wherein the matching degree between the color composition indicated by the second pixel value and the node is higher than the matching degree between the color composition indicated by the first pixel value and the node; performing conversion processing on the second pixel values of the nodes in the original color gamut based on a preset conversion matrix to obtain coordinate values of the second pixel values of the nodes in the original color gamut in a preset color space; wherein the preset conversion matrix is a conversion matrix for converting the nodes in the original color gamut from the color space where the nodes are located to the preset color space, so that the color distribution condition of the original color gamut of the display equipment is accurately evaluated, and the accuracy of converting the nodes in the original color gamut of the display equipment to the preset color space is improved.

A color-tunable LED system configured to emit light of various peak wavelengths in response to changes in drive current density includes an n-type region, a p-type region, and a multiple quantum well (MQW) region formed between the n-type and p-type regions. The MQW region includes parallel layers, each alloyed with a percentage of indium that enables light emission in the 400-600 nm range, and one or more shaped recesses formed within portions of the parallel layers. Each of the one or more shaped recesses has a lower indium alloy percentage than the rest of the parallel layers. A transition region between the one or more shaped recesses and the rest of the parallel layers has a higher indium alloy percentage, which decreases with distance from the one or more shaped recesses. A monolithic color-tunable LED system allows for the use of a single LED to function as a pixel.

The present invention includes systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.

The invention relates to the technical field of display, and discloses a display panel and a display device. The display panel comprises a substrate and at least three sub-pixels, the at least three sub-pixels are arranged on one side of the substrate, each sub-pixel comprises a first electrode, each first electrode comprises a reflection conducting layer, a dielectric layer and a transparent conducting layer which are sequentially arranged in a stacked mode, the difference value of the thicknesses of the first electrodes of every two adjacent sub-pixels is smaller than or equal to 200 angstroms, and the refractive indexes of the dielectric layers of the at least three sub-pixels are different from one another. The display panel improves the purity of the spectrum, and improves the color gamut and the display effect.

The present application provides a multi-color light mixing method and apparatus, a system, and a computer device. The method comprises: acquiring target chromaticity coordinates and target luminance of target colored light, and chromaticity coordinates and luminance of four mixing colors; obtaining three determination regions on the basis of the chromaticity coordinates of the four mixing colors; determining a target determination region into which the target chromaticity coordinates of the target colored light fall, the target determination region being one of the three determination regions; and on the basis of chromaticity coordinates and luminance of three vertices of the target determination region and the target chromaticity coordinates of the target colored light, determining mixing proportions of the various colors required for forming the target colored light. The present application provides a novel light mixing algorithm. The three determination regions are set according to a preset directional projection manner on the basis of a color gamut range formed by four colors, so that the mixing proportions of the four colors are calculated by determining the determination region into which the target colored light falls, thereby completing light mixing on the basis of the mixing proportions, and controlling output of the target colored light.

The invention provides a chromaticity calibration method, device and equipment based on color classification and brightness segmentation. The method comprises the following steps: acquiring a sensor measurement value of a current display picture of a display through a chromaticity sensor; extracting chromaticity features and brightness features of a current display picture according to the sensor measurement value; determining a color category and a brightness category of the current display picture according to a preset category discrimination strategy based on the chromaticity feature and the brightness feature; determining a calibration matrix of the current display picture according to a pre-stored calibration matrix mapping table based on the color category and the brightness category; and performing linear transformation on the sensor measurement value according to the calibration matrix to obtain a corresponding measurement calibration value. Through color and brightness two-dimensional classification and exclusive calibration matrix adaptation, full-color-gamut and full-brightness refined calibration is realized, the color deviation of the full-color gamut is remarkably reduced, and the color rendition precision and the brightness consistency are improved.

A color conversion sheet according to an embodiment of the present invention comprises: a base layer; and a wavelength conversion layer that is stacked on at least one surface of the base layer and comprises a matrix resin, an organic phosphor, and a wavelength absorbent, and thus the color conversion sheet experiences low color change, has excellent reliability, and can achieve a color gamut DCI of at least 99.5% by adjusting the phosphor emission wavelength. Also provided is a backlight unit comprising the color conversion sheet.

The present invention includes a system and method for a multi-primary color system for a display. A multi-primary color system increases the number of primary colors available in a color system and color system device. Increasing the number of primary colors reduces metameric error from viewer to viewer. One embodiment of a multi-primary color system includes red, green, blue, cyan, yellow, and magenta primaries. The system of the present invention maintains compatibility with existing color systems and devices and provides a system for backward compatibility with older color systems.

The present application discloses a method for spectral prediction and closed-loop feedback wide-width corrugated box extended gamut flexographic pre-printing, belonging to the field of packaging engineering and printing technology. The method comprises: establishing a dot gain mapping function based on the Yule-Nielsen correction model by testing the roughness, ink absorption and surface energy of the corrugated paper; printing a CMYKOGV seven-color characteristic color card to generate an adaptive ICC profile; using the CIEDE2000 color difference formula and constant hue angle mapping algorithm for gamut compression and color separation; selecting a low-hardness flat-top dot flexographic plate and configuring a anisotropic screen roller; introducing the Walker-Fetsko rheological ink transfer equation during printing, combining with real-time feedback of an online spectrophotometer to dynamically adjust the printing pressure and ink viscosity, and realizing closed-loop compensation. The present application realizes high-precision simulation of more than 90% of the PANTONE spot color library, completely gets rid of the dependence on spot colors, significantly improves the color stability and production efficiency of wide-width flexographic printing, and is suitable for extended gamut pre-printing production of high-quality corrugated boxes.

The invention provides a display screen color gamut evaluation method and system, and relates to the technical field of screen display, the display screen color gamut evaluation method comprises the following steps: obtaining M sampling tristimulus values in one-to-one correspondence with M display pictures, the M display pictures being in one-to-one correspondence with M RGB values, at least one RGB value in the M RGB values being not 255, and M being an integer greater than or equal to 3; based on the M sampling tristimulus values and the M standard tristimulus values, M first color appearance data and M second color appearance data are obtained; based on the M pieces of first color appearance data and the M pieces of second color appearance data, M color difference values are obtained, and the M color difference values are used for indicating color differences between the M pieces of first color appearance data and the M pieces of second color appearance data; based on the M color difference values, a histogram is constructed, and the histogram is used for representing color difference distribution between a display screen color gamut and a standard color gamut. The display screen color gamut evaluation accuracy can be improved.

The application provides a color correction method, system, display device and chip, and relates to the technical field of display. The method comprises the following steps: converting initial color data of a pixel into initial coordinates in a target color space; the initial coordinates comprise components in each coordinate direction of the target color space; extracting binary high m bits of each component; extracting binary low n-m bits of each component; n is a pixel bit width; obtaining corrected color data of a plurality of sampling points corresponding to the pixel according to the high m bits; performing interpolation on the corrected color data of the plurality of sampling points according to the low n-m bits to obtain corrected color data of the pixel; each side length of the target color space is a maximum value of a pixel color range, the target color space is divided into a plurality of sampling cubes, vertices of the sampling cubes are sampling points, p is a number of the sampling points in a coordinate direction, and p=2 m +1.In the application, the pixel is displayed by using the corrected color data, so that the display screen can display a standard specified color gamut.

The invention discloses a color calibration method and device, projection equipment and a storage medium, and relates to the technical field of projection. The method comprises the following steps: carrying out white balance calibration under a target color gamut on projection equipment; the calibrated projection equipment sequentially projects a single-color picture of each color in the six original colors; obtaining the current color coordinates of the projected monochromatic pictures of each color in sequence through a color corrector; adjusting the color adjustment parameter corresponding to each color in the projection equipment until the current color coordinate of the monochromatic picture of each color projected again after the parameter adjustment is detected is matched with the standard color coordinate of the monochromatic picture of each color in the target color gamut, and obtaining the standard color adjustment parameter of each color in the projection equipment. Therefore, the projection equipment after white balance calibration can perform color calibration on the to-be-projected picture by using the standard color adjustment parameter corresponding to each color in the six original colors and then output the to-be-projected picture, so that the color accuracy of the projected picture is improved.

The present invention relates to a method for driving an electro-optical display. More specifically, the present invention relates to a driving method for reducing pixel edge artifacts and / or image residue in an electro-optical display. The present invention provides a waveform for driving an electrophoretic display which includes a color filter between the viewer and the electrophoretic medium. Because the waveform results in each image update passing through a white state before the final state, the overall color gamut is wider and more predictable overall than simply driving an electrophoretic display which includes a color filter with a waveform used for a black and white grayscale display.

Provided are a display panel and a display device. In the display panel, first sub-pixels are configured to emit light of a first color, second sub-pixels are configured to emit light of a second color, and third sub-pixels are configured to emit light of a third color. The first sub-pixels, the second sub-pixels, and the third sub-pixels at least satisfy one of the following relationships: relationship I: the difference between the color gamut x-coordinate of the light of the second color and the color gamut x-coordinate of the light of the third color is within the range of ±0.02 of the color gamut y-coordinate of the light of the third color, and the color gamut y-coordinate of the light of the first color is not greater than the color gamut x-coordinate and / or the color gamut y-coordinate of a white point formed by synthesizing the light of the first color, the light of the second color, and the light of the third color; and relationship II: the difference between the maximum value and the minimum value of the half-peak widths of the electroluminescence spectra of the first sub-pixels, the second sub-pixels, and the third sub-pixels is less than or equal to 11 nm, and the difference between the half-peak widths of the electroluminescence spectrum and photoluminescence spectrum of each sub-pixel is less than or equal to 16 nm.