576 results about "Gamut" patented technology

The invention relates to the technical field of paper marking image acquisition optimization, in particular to an intelligent paper marking image acquisition system and method based on AI and terminal equipment. An original image is acquired through an image acquisition unit, and a color temperature distribution thermodynamic diagram is generated by a light source analysis unit through a convolutional neural network; the dynamic compensation unit divides compensation grids and executes exposure compensation, the self-adaptive correction unit outputs a target image through bilinear interpolation and color space conversion, and the quality evaluation unit compares a positioning mark color gamut value to trigger a grading re-shooting mechanism. The problems of insufficient complex illumination adaptability and poor image quality stability in the prior art are solved, highlight-shadow intelligent compensation, color space adaptive conversion and quality closed-loop control of the answer sheet image are realized through AI-driven multi-unit cooperation, the full-filling point recognition accuracy and the image qualification rate are improved, and the image quality is improved. And the high-efficiency examination paper marking requirement of large-scale examination is met.

The invention discloses a liquid crystal display screen gray scale control method based on adaptive brightness compensation, which relates to the technical field of liquid crystal display screen control, and comprises the following steps: collecting environmental spectrum distribution information and a pixel gray scale voltage response curve of a liquid crystal display screen in real time, and carrying out fusion processing to form a time sequence joint feature vector; through multi-mode synchronous sampling and time sequence joint feature vector generation, ambient light and screen content changes are accurately captured, target adjustment values of backlight power and gray scale voltage are dynamically predicted, and response lag and overshoot are avoided. Through spectral domain balancing and a self-adaptive damping scheduling mechanism, cooperative control of backlight and gray scale is optimized, high-frequency oscillation is suppressed, and linear response of a low-frequency band is ensured. Meanwhile, Gamma mapping and global color gamut calibration are dynamically refreshed, accurate adjustment of area-level brightness and gray scale is achieved, and continuity of the display effect and visual experience of a user are improved.

The invention discloses a backlight control method, display equipment and a computer readable storage medium, and relates to the technical field of liquid crystal display, the backlight control method is applied to a backlight system, the backlight system comprises an LED backlight source, the LED backlight source comprises a three-primary-color light-emitting source and a white light-emitting source, and the method comprises the steps of obtaining a to-be-displayed target image, determining a three-primary-color backlight gray value of the three-primary-color light emitting source based on the target image; a white backlight gray value is determined based on the three-primary-color backlight gray value, and the white backlight gray value is in positive correlation with the three-primary-color backlight gray value; and driving the three-primary-color light-emitting source to emit light based on the three-primary-color backlight gray value, and driving the white light-emitting source to emit light based on the white light-emitting source, so that the LED backlight source provides backlight. The light emitting efficiency of the backlight source is improved, and the brightness and the color gamut are considered on the basis of low energy consumption.

The invention relates to the technical field of liquid crystal display, and provides liquid crystal display equipment based on a field order and a color image display method. An image to be displayed can be decomposed into three sub-frames based on a field sequential display technology, each sub-frame corresponds to a color field, when a liquid crystal panel is driven according to a main color gray scale value of the color field corresponding to each sub-frame, at least one backlight source corresponding to each color field is firstly driven to emit backlight of a first duration within a time period when liquid crystal molecules reach a steady state, and then the backlight source corresponding to each color field is driven to emit backlight of a second duration within a time period when the liquid crystal molecules reach the steady state. The white light of the second duration is emitted after the first duration, so that the white light is added in the backlight lightening stage of each color field, the color gamut range of the color field corresponding to each sub-frame is effectively reduced, and the color separation phenomenon is reduced. In addition, each subframe corresponds to a single color field or a mixed color field, so that the color separation phenomenon in various algorithms can be improved.

The invention provides an underwater image enhancement method fusing multi-scale frequency domain and multi-color gamut features, and the method comprises the following steps: employing an underwater robot to collect an original image, carrying out the size normalization processing, and obtaining a standardized image; inputting the standardized image into a frequency domain feature enhancement network to generate an enhanced frequency domain feature; forming the standardized image into three paths of color features; splicing and fusing the three paths of color features to obtain enhanced color features; splicing and fusing the enhanced color representation and the frequency domain representation to obtain a final joint feature; and L1 loss and structural similarity loss are adopted for joint supervision, and network training is completed. According to the method, multi-scale frequency domain enhancement and multi-color gamut information enhancement are coupled in the same frame, so that collaborative repair of multiple degeneration such as color distortion, contrast reduction and detail blur of the underwater image is realized.

The invention relates to the technical field of health assessment, in particular to a traditional Chinese medicine health assessment method and system based on intelligent analysis, and the method comprises the steps: carrying out the multispectral image collection of the face and tongue picture of a user, carrying out the color gradation quantification processing and texture feature extraction of the obtained image data, and obtaining a face color gamut feature matrix and a tongue picture texture feature vector; and based on the tongue picture-complexion associated features and a syndrome description text input by the user, performing intelligent classification pre-judgment on traditional Chinese medicine syndrome types to obtain an initial syndrome label set, and based on user physique data, correcting the initial syndrome label set to obtain a syndrome feature fusion vector. Through the health fluctuation index and the health trend early warning signal, the change of the health condition of the user can be dynamically evaluated, and a personalized health intervention scheme is generated on the basis, so that the fluctuation of the health condition can be reflected in real time, intervention measures can be taken in time, and potential health risks can be prevented.

The invention relates to a quantum dot optical encoder measurement error dynamic compensation method and system and a storage medium. The method comprises the following steps: acquiring a multi-color-gamut code channel image according to a quantum dot optical encoder; constructing a sub-pixel level compensation network model; a code channel fine feature extraction network, a causal inference network, a decision network, a sub-pixel level positioning network, a coding and decoding network and Q learning are introduced, so that a single-factor measurement error compensation agent is constructed; parallel decomposition multi-subtask model training is adopted, the output of a causal inference network is combined, and the compensation agent strategy proportion of each influence factor is calculated, so that a measurement error compensation agent under the influence of multiple factors is constructed; and measuring error dynamic compensation is completed. By adopting the method, decoupling of coupling errors of internal and external factors can be realized, and error compensation can be performed in a more targeted manner by analyzing the strategy ratio of each compensation sub-agent, so that the measurement precision is improved.

The invention discloses an intelligent cloud management high-definition card printer system, and relates to the technical field of card printers, the intelligent cloud management high-definition card printer system comprises a processor, a database and a printing module, the processor is connected with the database through signal transmission, and the printing module is connected with the processor through signal transmission. The printing module comprises an information acquisition assembly and a printing assembly, the information acquisition assembly is used for acquiring material information and environment information, the printing assembly is used for printing cards, and the processor controls the printing module to start by receiving a primary starting signal and a secondary starting signal. The processor constructs a color compensation module through information collected by the information collection assembly to output a color compensation value to adjust the printing assembly. By designing and constructing the color compensation model, the function of high-precision card printing is realized, the problems of dependence on off-line measurement, color gamut deviation and response lag are solved, the color deviation can be compensated in real time, and the quality and specialty of card printing are improved.

The invention relates to a visual angle color cast correction method for a transparent display screen and related equipment, and the method comprises the following steps: carrying out the spectral data collection of a plurality of preset visual angle positions of the transparent display screen, and obtaining a visual angle spectral distribution matrix; performing color gamut space mapping on pixel units of the transparent display screen based on the view angle spectral distribution matrix to obtain a view angle dependent color shift feature map; performing color correction compensation calculation on the view-angle-dependent color offset feature map to obtain a multi-dimensional color offset compensation lookup table; performing pre-distortion processing on a driving signal of the transparent display screen based on the multi-dimensional color cast compensation lookup table to obtain a visual angle self-adaptive driving control signal; and controlling the transparent display screen to perform color cast correction based on the visual angle self-adaptive driving control signal, thereby solving the technical problems that the compensation effect is limited and even color distortion is aggravated under some extreme visual angles due to the fact that mutual optical interference among pixels is often ignored in the correction process in the prior art.

The invention belongs to the technical field of printing, and particularly relates to a printing ink color real-time calibration method and system based on dynamic color gamut mapping, high-frequency online monitoring is achieved by constructing a local color gamut contour and arranging a multispectral sensing array, and the change trend can be captured at the initial stage of color shift; a stable color block recognition and local weighted mapping updating mechanism is combined, an updated lookup table is dynamically generated, and correction is prevented from being triggered by dependence on significant offset; further, according to the response relationship between the color offset direction and the printing parameters, the adjustment of the ink key opening and the printing pressure is implemented in stages, the offset source is inhibited from the physical level, the mapping adjustment is started when the color difference does not exceed the limit, the equipment parameter fine adjustment is synchronously driven, the response time is remarkably shortened, the generation of out-of-tolerance products is reduced, and the product quality is improved. And the real-time performance and the stability of color control are improved.

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.

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 discloses a partial discharge detection method and device based on discharge spectrum chromaticity, and belongs to the technical field of power systems, and the method comprises the steps: collecting a plurality of discharge optical signals of switch cabinet equipment; for each discharge optical signal, carrying out chromaticity analysis on the RGB monochromatic light signal, and respectively calculating color chaos degree, spectrum color gamut deviation degree, spectrum chromaticity dynamic coupling parameters and hue purity ratio; calculating a chromaticity difference weight based on the full-band optical signal and the RGB monochromatic light signal; performing weighted integration on the color chaos degree, the spectrum color gamut deviation degree, the spectrum chromaticity dynamic coupling parameter and the hue purity ratio based on the chromaticity difference weight to obtain a chromaticity comprehensive magnitude; calculating the mean value of the comprehensive chromaticity values of the plurality of discharge optical signals; and comparing the chromaticity comprehensive magnitude mean value with the plurality of judgment chromaticity ranges, and determining a discharge type detection result of the switch cabinet equipment. According to the invention, the problem of low accuracy of partial discharge detection in the prior art can be solved.

The present invention includes systems and methods for optimizing perception of image data. Color vision impairment affects a user's ability to distinguish between certain colors, reducing the impact of color images. Mapping color image data to an expanded color gamut increases contrast between colors and the available number of distinct colors in a set of image data, which improves the ability of a user with color vision impairment to see differences between colors. The present invention includes systems and methods for determining a type of color vision impairment in order to provide customized optimization of image data for improved color perception.

The invention provides a dynamic polarization three-dimensional imaging system, which relates to the technical field of anti-counterfeiting encryption and comprises a light source, a polarization film and a color three-dimensional imaging module which are sequentially arranged along a light path, the light source is used for providing visible band incident light; the polarizing film is configured to transmit TM polarized light when rotating 0 degree and transmit TE polarized light when rotating 90 degrees; the color three-dimensional imaging module comprises a micro lens array, a transparent spacing layer and a micro image-text array which are sequentially arranged along a light path; the micro image-text array comprises a metal coating layer, a grating layer and a glass substrate which are stacked from top to bottom, wherein the grating layer forms a Fabry-Perot-like microcavity resonance structure; the polarization state of the incident light is switched by rotating the polarization film, so that the stereo image of the micro image-text array is dynamically switched among an appearing state, a hiding state or a color changing state. According to the invention, wide-color-gamut and dynamically-adjustable color stereo imaging is realized, and the complexity and the identifiability of anti-counterfeiting encryption are improved.

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 provides a high-purity structural color device based on a metasurface and a color developing method, and relates to the technical field of structural color metasurface, the structural color device is a double-layer nanoring array based on an all-dielectric metasurface, adopts an optical design based on Fabry-Perot interference and Mie resonance, and comprises a plurality of structural units, the structure unit comprises a vertical stacking double-layer circular ring structure formed by a tantalum pentoxide Ta2O5 functional layer and a silicon dioxide SiO2 top cover layer, and has sub-wavelength periodic two-dimensional arrangement; through the technical path of the invention, a structural color solution with high purity, wide color gamut and high reflection is provided by utilizing the wide band gap characteristic and high-quality manufacturing capability of Ta2O5. The application scenarios include but are not limited to high-end displays, optical sensors, information encryption and precision optical elements, and brand new possibility is provided for development of the next generation of photonics technology.

The invention relates to the technical field of display screen correction, solves the problem of low correction precision of optical display parameters on a photoelectric display screen in the prior art, and provides an optical display parameter correction method, device and equipment of the photoelectric display screen. The method comprises the following steps: acquiring a mapping relation between a driving gray-scale value and a tristimulus value of each color sub-pixel on the photoelectric display screen; determining target brightness and chrominance according to the brightness and chrominance distribution characteristics of each color sub-pixel in the correction picture under a preset test condition; according to the mapping relation, the target brightness and chrominance and a brightness and chrominance deviation allowable interval corresponding to the test condition, calculating each color sub-pixel driving gray scale combination of each pixel under the test condition, and determining a target driving gray scale combination; and adjusting driving control parameters of the photoelectric display screen according to the target driving gray scale combination, and outputting the adjusted driving control parameters to the photoelectric display screen. According to the invention, the optical display parameter correction precision under the conditions of low gray scale and full color gamut is effectively 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.

The invention discloses a display screen color gamut proofreading method, device and equipment and a storage medium, and relates to the technical field of screen display, and the method comprises the steps: collecting screen spectrum data based on a multispectral camera, and synchronously collecting an environment spectrum; processing the screen spectrum data in real time through spectrum compression coding, and outputting compressed spectrum data; performing spectral feature reconstruction based on the compressed spectral data to obtain a reconstructed spectrum; performing target color gamut mapping processing on the reconstructed spectrum, and outputting a mapped spectrum; and correcting the mapping spectrum based on the environment spectrum to obtain a corrected target spectrum, and converting the corrected target spectrum into a driving signal. According to the invention, the interference of the ambient light on the color gamut correction is accurately offset by synchronously collecting the environmental spectrum for processing, the high precision of the reconstructed spectrum is guaranteed through low-loss spectrum compression reconstruction, and the balance between real-time performance and precision is achieved.

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 invention relates to the technical field of image processing, in particular to a medical image display system based on color calibration, and the system comprises a calibration tensor generation module which generates a three-dimensional calibration input tensor; the closed-loop feedback calibration module is used for inputting the three-dimensional calibration input tensor into a pre-trained multi-modal adversarial compensation network and generating a pixel-level aging-environment coupling compensation coefficient matrix and a color gamut anchor point coordinate; and the compensation execution module is used for writing the compensated quantized color instruction set into a redundant driving unit of the display panel to realize cooperative offset of equipment aging and environmental interference. According to the method, the color rendition error in the high-resolution medical image can be effectively reduced, the color stability is improved, and the method is suitable for real reproduction of high-precision diagnosis scenes such as endoscope and CT pseudo-color images.

Waveguides and waveguide displays having a layer for blocking non-image light (i.e. haze) that could otherwise reduce contrast and degrade color gamut and uniformity, while providing high transmission to external light are provided. Many waveguides and displays incorporate at least one light control layer applied to at least one external surface of said waveguide and overlapping at least a portion of said at least one grating, to divert or block scattered light from said set of gratings that might otherwise enter said eyebox.

The invention discloses a light-emitting device, a preparation method thereof and a display device. The light-emitting device comprises a light-emitting layer, and the light-emitting layer comprises a quantum dot body, a first ligand and a second ligand; the first ligand is connected with the quantum dot body through a first cross-linking structure; the second ligands are dispersed in the quantum dot light-emitting layer, at least part of the second ligands are connected through a second cross-linking structure, and the polarity of the first ligands is the same as that of the second ligands. The light-emitting layer of the light-emitting device is less in residue in the adjacent sub-pixels, wide in color gamut and good in light-emitting performance; in addition, due to the existence of the second ligand, the combination of the first ligand and the quantum dots can be more stable, and the light-emitting performance of the light-emitting device is more stable.

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 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.