374 results about "Color coordinates" patented technology

The present invention relates to an electrode drying apparatus and an electrode drying method, and the electrode drying apparatus includes: an oven configured to provide a space in which the electrode is dried and to include a hot air nozzle or an infrared heater; a color coordinate measuring unit configured to be positioned at an outlet of the oven and measure a color coordinate value of an electrode active material layer with respect to the dried electrode; and a controller configured to analyze a drying result of the electrode from the color coordinate value, determine whether the electrode is defective in drying, and control a drying condition of the electrode.

The invention discloses an RGB LED light source calibration mode optimization method and system, and the method comprises the steps: collecting the color coordinates and brightness data of a three-primary-color light source of an RGB LED, and recording the actual optical characteristics; based on the collected data, establishing a physical model of the light mixing effect of the RGB LED light source, and calculating an initial PWM duty ratio corresponding to a target color coordinate and brightness; inputting the initial PWM duty ratio into the intelligent calibration algorithm model, and optimizing and calculating the optimal PWM duty ratio; the optimized PWM duty ratio is written into an MCU, and the MCU controls mixed light output of the RGB LED according to the written duty ratio; and testing and verifying the calibration effect of the RGB LED light source, and adjusting the parameters of the intelligent calibration algorithm model according to the test result. According to the invention, the PWM duty ratio can be dynamically optimized to realize high-precision light mixing output, and rapid repair and real-time adjustment are supported. The invention belongs to the technical field of photoelectricity, and aims to solve the core problem of the existing RGB LED light source calibration technology and improve the consistency of the light source performance and the production efficiency.

The invention discloses an atmosphere lamp user color calibration matching method. The method comprises the steps that K PCBA boards are installed on a lamp shell; measuring a color coordinate value and a luminous flux value of the atmosphere lamp; the color coordinate value and the luminous flux value of any atmosphere lamp serve as color correction data, and the pwm duty ratio is calculated; the controller controls the LED driver to drive the K atmosphere lamps to complete primary color correction; the PCBA board in any atmosphere lamp is taken out, and the actually measured luminous flux value of the PCBA board is measured; comparing the actually measured luminous flux value with a target luminous flux value to obtain a ratio r; increasing the target luminous flux value Yt by r times, and calculating a pwm target duty ratio in combination with color correction data; the controller controls the LED driver to drive the K atmosphere lamps to complete secondary color correction; and the color coordinate value and the luminous flux value of the atmosphere lamp after color correction are measured and compared with customer standards. The method has the advantages that assembly user color adjustment of multiple styles of atmosphere lamps is achieved, the matching degree of chromatic value control of the atmosphere lamps and real environment requirements is met, the production time cost is greatly saved, and the production efficiency is improved.

A method of generating a color mapping table for correcting color of a display panel, including: establishing a sampling point space, according to first color coordinates of a plurality of sampling points in a first color space; and performing steps of a preset processing on each of the plurality of sampling points, to obtain target color coordinates of the sampling point in the first color space, and generating the color mapping table according to the first color coordinates and the target color coordinates of the plurality of sampling points, where the steps of the preset processing on each of the plurality of sampling point include: taking the sampling point as a source sampling point, and determining a target sampling point corresponding to the source sampling point; and processing the target sampling point, to obtain the target color coordinates.

The invention provides a processing method and device of a spliced display screen and a spliced display device, and belongs to the technical field of display. The spliced display screen comprises a plurality of sub-display screens spliced together, and the processing method of the spliced display screen comprises the steps that all the sub-display screens are controlled to display a full-white picture, and RGB data of each sub-display screen are detected; converting the RGB data into brightness and color coordinates of the sub display screens; sequentially performing color temperature correction, gamma correction and brightness correction on each sub-display screen according to the brightness and the color coordinates of the plurality of sub-display screens, so that the difference value between the color temperature of each sub-display screen and a target color temperature is not greater than a preset first threshold value, the difference value between the maximum brightness of each sub-display screen and the target brightness is not greater than a preset second threshold value. The display uniformity of the spliced display screen can be improved.

The invention discloses a temperature-based LED color deviation compensation correction method. The method comprises the following steps: measuring LED lamp bead data by using a spectrograph and importing the data into a PC terminal; normal-temperature color coordinate values and normal-temperature luminous flux values of red, green and blue channels of the LED lamp beads collected at the normal temperature of 25 DEG C and the temperature t serve as independent variables at a PC end, data of the LED lamp beads are fitted into a multivariate high-order function through machine learning, and the multivariate high-order function is written into a program code of a controller; measuring primary color coordinate values and primary luminous flux values of red, green and blue channels of the LED lamp beads at 25 degrees once by using a spectrograph, and writing the primary color coordinate values and the primary luminous flux values into a controller; the controller obtains the current temperature value t ', and the actual color coordinate value and the actual luminous flux value of the LED lamp bead under the current temperature value t' are calculated; and calculating the target duty ratios of the red, green and blue channels of the LED lamp beads with the target color and writing the target duty ratios into an LED driver, wherein the LED driver drives the LED lamp beads to mix light with the same color as the target color. The production efficiency of the atmosphere lamp is improved, the production process is simplified, and the color cast compensation precision of the atmosphere lamp is improved.

The invention discloses a method and device for detecting color reducibility of a mobile phone camera and a medium, and relates to the technical field of image quality detection.The method comprises the steps that after geometric alignment is conducted on a color card image set, color block areas are divided, and a cross-light-source color block observation matrix is obtained through color block feature extraction; converting the cross-light-source color block observation matrix into a target color space coordinate, and performing illumination correction to obtain a cross-light-source color coordinate matrix; inputting the cross-light-source color coordinate matrix into a deep learning model, outputting a color block level high-dimensional color embedding matrix, and obtaining a high-dimensional color embedding vector set corresponding to the tested mobile phone camera in combination with an attention weight; calculating a color reducibility error index based on the high-dimensional color embedding vector set in combination with the standard reference library; and performing qualification judgment according to the color reducibility error index to generate a qualification detection conclusion. According to the invention, a stable and reliable technical basis is provided for camera quality detection under a multi-light-source imaging condition.

The invention provides a display control method and system for a liquid crystal display screen, and the method comprises the steps: carrying out the nonlinear spectrum mapping processing of an input RGB drive value, and obtaining a theoretical emission spectrum through combining with the response characteristics of liquid crystal molecules; calculating a reflection spectrum component in the multilayer structure according to the ambient light spectrum, and superposing the reflection spectrum component with the theoretical emission spectrum to obtain an actual observation spectrum; calculating a difference value between the actual observation spectrum and the target spectrum, and converting the difference value into an RGB correction value through a constraint optimization algorithm to obtain an RGB driving value after ambient light compensation; and calculating actual white point color coordinates, and adjusting the actual white point color coordinates to a standard white point position through a progressive white point migration algorithm. Display parameters can be dynamically adjusted according to real-time ambient light conditions, the influence of ambient light reflection on colors is effectively compensated, meanwhile, color temperature consistency and color accuracy are ensured through white point correction, the display quality under different ambient lights is remarkably improved, and the visual experience of a user is improved.

The invention discloses a light color detection analysis method and system for an LED, and relates to the technical field of LED detection, and the system comprises a light color collection module which is used for obtaining spectrum data generated in the lightening process of a target LED; the time sequence modeling module is used for collecting a plurality of spectral data points at fixed time intervals within a continuous preset time period after the target LED starts to emit light, calculating to obtain a dominant wavelength, a color coordinate and a fitting color temperature value, forming a multi-moment light color parameter sequence, and constructing a time sequence model based on the sequence, and outputting the time sequence model and the corresponding original parameter sequence. According to the method, the change curve of the light intensity and the color coordinates is constructed, and a convergence trend analysis mechanism is introduced, so that the LED light-emitting stable state is automatically judged, wrong judgment caused by unstable early data is effectively avoided, and the representativeness and the accuracy of detection data are improved.

A display device includes a display panel including a pixel that includes sub-pixels for emitting light in respective colors, and a driver configured to adjust a current amount flowing through the sub-pixels and to adjust an emission duty of the sub-pixels, drive one sub-pixel among the sub-pixels having a luminance with a first current amount and with a first emission duty when a color coordinate of an image expressed by the pixel is within a reference color space, and drive the one sub-pixel having the luminance with a second current amount that is greater than the first current amount and with a second emission duty that is less than the first emission duty when the color coordinate is outside of the reference color space.

The invention provides an LED multi-light-color regulation and control method and system based on a multi-objective evolutionary algorithm, and the method comprises the steps: firstly obtaining the spectrum and electric power data of each single-color LED, and carrying out the preprocessing of the data through combining a cubic spline interpolation method and a fitting function; secondly, optimizing light color indexes such as color coordinates, color rendering index, color temperature, SDCM value and power consumption by designing an evaluation function; the core of the algorithm is to iteratively optimize the population through individual evaluation, survival of the fittest, heredity and mutation operations by using a multi-target genetic algorithm until an optimal PWM combination meeting all light color index requirements is found. Specifically, the method has the advantages of being high in flexibility, good in expansibility and the like, can adapt to different LED channel configurations, provides a light color regulation and control scheme with high pertinence, is particularly suitable for factory regulation of fluorescent powder-free multi-primary-color LED lamps, and provides an efficient and automatic solution for light color optimization.

The invention discloses a screen color correction method and device and a storage medium, which are used for improving the correction efficiency. Setting a detection probe and a to-be-calibrated detection instrument, and obtaining a standard screen; determining a detection point coordinate set on the standard screen according to the screen body parameters of the standard screen; lightening the standard screen, displaying a preset XYZ stimulus value standard picture, and adjusting exposure parameters of the detection probe and the detection instrument; detecting XYZ stimulation values of point locations in the detection point coordinate set through the detection probe to generate first color coordinate value data; detecting XYZ stimulus values of point locations in the detection point coordinate set through the detection instrument to generate second color coordinate value data; generating a first correction function set of XYZ stimulus values according to the first color coordinate value data and the second color coordinate value data; and performing screen color correction on a to-be-calibrated detection instrument through the first correction function set.

The invention relates to the technical field of LED display testing, in particular to an LED screen backlight module performance testing system which comprises the steps that a model identification code of a module to be tested is received, a corresponding standard optical parameter set is called, and initial driving current is applied. Actual optical signals driven by different currents are collected through a light sensing probe array and converted into a digital optical measurement value set containing brightness and color coordinate values of multiple sampling points. Comparing the brightness measurement value with a target brightness value point by point to generate a brightness consistency deviation matrix; and judging the color coordinate measurement value and the target range, and generating a color coordinate qualified identifier list. And calculating an actual brightness uniformity value according to the deviation matrix, and comparing the actual brightness uniformity value with a standard threshold value. And if the actual brightness uniformity value reaches the standard and the color coordinates of all the sampling points are qualified, generating a module qualification judgment instruction. According to the system, automatic and high-precision comprehensive evaluation of brightness space uniformity and chromaticity consistency of the backlight module is realized.

The embodiment of the invention discloses a correction parameter determination method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of color calibration, and the method comprises the steps: obtaining a brightness value corresponding to a first gray scale in a to-be-tested sample and a color coordinate corresponding to a reference RGB combination, and the reference RGB combination represents a to-be-corrected color; determining color coordinates corresponding to a plurality of RGB combinations based on the brightness value corresponding to the first gray scale and the color coordinates corresponding to the reference RGB combination; and under the condition that the difference between the color coordinate corresponding to any RGB combination and the target color coordinate is smaller than a preset threshold value, taking the RGB parameter corresponding to any RGB combination as the correction parameter of the to-be-corrected color. Therefore, the finally corrected color is closer to the target color in the color space, the color deviation is reduced, more real and accurate color experience is provided for a user, and the cost of color calibration is also reduced.

The present application belongs to the technical field of projection. Disclosed are a projection display device and a white balance adjustment method. The projection display device comprises a processor. The processor is used for: driving a primary color light source to emit primary color light, and acquiring a first color coordinate value of white light generated by mixing the primary color light; and when the deviation between the first color coordinate value and a standard color coordinate value is greater than a deviation threshold value, adjusting light emission parameters of the primary color light source on the basis of the standard color coordinate value, so that the deviation between a color coordinate value of white light generated by mixing primary color light emitted by the adjusted primary color light source and the standard color coordinate value is less than or equal to the deviation threshold value, wherein the standard color coordinate value is a white light color coordinate that the projection display device is expected to achieve. Thus, by means of accurate color control and correction, the projection display device can reduce color distortion and deviation and improve the definition and contrast of images, thereby enhancing the display stability and consistency.

The invention discloses a multi-channel multi-color-temperature intelligent light source system for consistency calibration of a camera module and an optimization method, and the calibration system generates PWM signals through an STM32F103ZET6 main control unit of a light source controller to control the light output of each group of cold and warm LEDs so as to provide a stable and adjustable illumination environment; measuring reference brightness and chromaticity parameters of cold light and warm light of each group of LEDs, setting a target brightness value and a color temperature value, and converting the target brightness value and the color temperature value into target chromaticity coordinates; the initial PWM duty ratio of the cold and warm light LED is calculated, a piecewise polynomial nonlinear compensation algorithm is adopted to correct the duty ratio, and the LED is driven to output mixed light meeting the target brightness and color temperature; collecting a large amount of brightness and color temperature data by cyclically and gradually adjusting the duty ratio, and generating an error thermodynamic diagram; and the compensation model coefficient is optimized and updated according to error analysis, so that the light source output keeps high-precision consistency in a full range. Compared with the prior art, the method has the advantages that the brightness and color temperature consistency of the light source can be automatically calibrated and continuously optimized, the accuracy and stability of OTP burning calibration of the camera module are greatly improved, and the production test efficiency and the product imaging quality are improved.

Provided in the embodiments of the present description are an image processing method, and a device and a storage medium. The method comprises: acquiring an image to be subjected to matting; determining the distance between color coordinates of each pixel point in said image and a predetermined hyperplane, wherein the hyperplane is a classification boundary of a background color and a non-background color of said image; and on the basis of the distance which corresponds to each pixel point, determining the probability of each pixel point being a foreground area of the said image, so as to perform matting processing on said image on the basis of the probability. In the embodiments of the present application, the distribution range of a background color accurately defined by means of a high-dimensional hyperplane can be used, so that a foreground area and a background area, which are obtained by means of matting, are also more accurate, thereby obtaining a matted image which is natural in transition.

A light-emitting diode device includes light-emitting diodes, a storage module, a control module, a driving module, and a package structure. The light-emitting diodes emit different colors of light. The storage module pre-stores color coordinate reference information and brightness reference information corresponding to a current / voltage of the light-emitting diodes. The control module receives the color coordinate reference information and the brightness reference information corresponding to the light-emitting diodes, and uses the color coordinate reference information, the brightness reference information, the color coordinate requirement information, and the brightness requirement information according to a light mixing algorithm to generate a first control signal. The driving module generates a driving signal according to the first control signal to drive the light-emitting diodes to emit a light having a color coordinate and brightness that meet requirements. The package structure accommodates the light-emitting diodes, the storage module, the control module, and the driving module.

The invention relates to the technical field of curved surface display, and discloses a display compensation method and system of a curved surface display panel. The method comprises the following steps: acquiring original brightness data of the curved surface display panel at different visual angles, and establishing a compensation reference library containing an incidence relation between a brightness attenuation gradient and a curvature radius; dividing a main compensation area, a transition compensation area and an edge compensation area according to the reference library, and determining the compensation intensity grade of each area; a dynamic compensation strategy containing a brightness decay prediction model and a color coordinate offset correction model is configured for the main compensation area; after generating an initial compensation parameter set based on the strategy, verifying the effectiveness through curved surface deformation simulation; and if the verification is passed, the parameter set is loaded to the display driving chip, and compensation is completed. According to the method, through accurate reference library construction, refined region division, a dynamic compensation strategy and comprehensive simulation verification, the display consistency of the curved surface display panel is effectively improved, the display quality under different visual angles is improved, and the method is suitable for various curved surface display devices.

The embodiment of the invention discloses a display device and a control method of the display device, and relates to the technical field of display, the display device comprises a backlight module, a liquid crystal panel and a backlight driving circuit, the backlight driving circuit determines target backlight data according to initial backlight data and preset reference data, and a first target color coordinate is taken as a reference, so that the first target color coordinate is obtained; the initial backlight data is converted into target backlight data, color cast caused by conversion is reduced, and meanwhile, under the condition that the initial backlight data is backlight data corresponding to a white field picture or a gray field picture, the target backlight data obtained through conversion can make at least one of a red light-emitting light source, a green light-emitting light source and a blue light-emitting light source emit light; therefore, the light-emitting color cast phenomenon of the white light-emitting source is improved. Backlight supply is achieved through the light-emitting light sources corresponding to red, green, blue and white, so that the energy consumption of the display device is reduced, and meanwhile the display effect of the display device can be guaranteed.

The invention discloses a near BBL curve LED white light color mixing method, system and lamp, a first color temperature light source and a second color temperature light source are selected in a preset color coordinate area, and a color point range is determined for each of the first color temperature light source and the second color temperature light source based on calculation of an intermediate color temperature point light source color deviation value extreme value on a target light mixing path; and selecting the first color temperature light source and the second color temperature light source of which the color coordinates are located in the corresponding color point range, and adjusting the luminous flux output proportion of the two light sources for light mixing so as to form intermediate color temperature light. The problems that a multi-CCT light and color modulation product adopts two light sources, the color temperature and color tolerance between the two light sources cannot meet the requirements of customers, and the color deviation value of the light sources obviously deviates from a BBL curve are solved.

The invention discloses a projector calibration method and device, a storage medium and electronic equipment, and relates to the technical field of projection, and the method comprises the steps: sequentially projecting a plurality of pictures of different colors through a projector, and carrying out the color coordinate collection of the plurality of pictures, and obtaining the test color coordinate data of a plurality of colors; performing combination processing on the test color coordinate data of the plurality of colors according to a projection calibration matrix layout to obtain a test polynomial matrix; performing conversion and rearrangement processing on the test polynomial matrix to obtain a test color gamut matrix matched with the specification of the projection processor; and calculating according to the test color gamut matrix and a standard color gamut matrix to obtain a color gamut mapping conversion matrix, so that the projector performs projection based on the color gamut mapping conversion matrix. According to the invention, the color of the projector can be effectively calibrated, the color distortion improvement effect of the projector is improved, and the user experience is improved.

The embodiment of the invention relates to the technical field of terminals, in particular to a display method, a method for generating correction data and electronic equipment, and can calibrate colors when a display screen displays an interface. The method comprises the following steps: under a current screen parameter, a first electronic device displays an interface based on an output color value; the output color value is a color value obtained by correcting a target color value of a pixel in the interface based on target correction data corresponding to the current screen parameter; the color coordinate of the output color value is consistent with the color coordinate of the target color value; the target correction data comprises a mapping relation between the output color value and the target color value under the current screen parameter.

The present invention belongs to the field of silicon-based OLED detection technology, and in particular, is a silicon-based OLED product fine point positioning fixture. In view of the problem of poor positioning accuracy of existing detection methods, the following scheme is proposed, including a support, the upper side of the support is fixedly connected to a fixing frame, a color analyzer is arranged on the fixing frame, and a fixing fixture is fixedly connected to the upper side of the support, a movable fixture is attached to the outside of the fixed fixture, a rounded corner is provided at a right angle position of the movable fixture, a silicon-based OLED body is provided on the side of the movable fixture away from the fixed fixture, a pushing module is provided on the upper side of the support, and a rectangular hole is provided on the support. A silicon-based OLED product fine point positioning fixture disclosed by the present invention can quickly and accurately push the silicon-based OLED body that needs to be detected to the detection position of the color analyzer, so that the silicon-based OLED product can measure the brightness and color coordinates more accurately, while ensuring the measurement accuracy and speed effect.

A display device includes a display panel including a plurality of pixels, and a panel driver coupled to the display panel. The panel driver stores color coordinate compensation data representing a color coordinate compensation value according to a temperature value and a light emitting element efficiency, stores efficiency data representing the light emitting element efficiency according to a gray level, determines temperature values of the plurality of pixels to determine color coordinate compensation values for the plurality of pixels based on the color coordinate compensation data, the efficiency data and the temperature values of the plurality of pixels, generates corrected image data by correcting input image data based on the color coordinate compensation values, and drives the display panel based on the corrected image data.

A lighting apparatus including a controller and an LED luminaire to implement a color temperature from a minimum of 3,000K or less to a maximum of 5,000K or more, the LED luminaire including at least one first light emitter, at least one second light emitter, and at least one third light emitter, in which a triangle region defined by color coordinates of the light emitters includes at least a region on a Planckian locus, and the maximum and minimum color temperatures in the triangle region are 5,000K or more, and 3,000K or less, respectively, and in the CIE-1931 coordinate system, the color coordinates of the first light emitter is closer to 5,000K than those of the second and third light emitters, and the color coordinates of the third light emitter is closer to 3,000K than those of the first and second light emitters.

At least one embodiment of the invention provides a color difference elimination method of a display module and a color difference elimination method of a spliced screen. The color difference elimination method comprises the following steps: acquiring brightness data and chroma data of the display module under a plurality of gray-scale values; extracting brightness data and chrominance data corresponding to the plurality of areas under the plurality of gray-scale values; calculating the color coordinate difference between the chromaticity data corresponding to the plurality of areas under the plurality of gray-scale values and the target color coordinate; calculating the brightness difference between the brightness data corresponding to the plurality of areas under the plurality of gray-scale values and the target brightness; calculating compensation data under each gray-scale value according to the color coordinate difference and the brightness difference; generating a first type of compensation result; converting the compensation result of the first type into a file of a second type, and storing the file of the second type in a display module to form chromatic aberration elimination data; and the display screen driving board reads the chromatic aberration elimination data and drives the display screen to display, and the chromatic aberration elimination method of the display module can realize the effect of eliminating non-uniform display brightness and non-uniform chromaticity of the display module.

The embodiment of the invention provides an image processing method and device and a storage medium. The method comprises the following steps: acquiring a to-be-matted image; the distance between the color coordinate of each pixel point in the to-be-matted image and a predetermined hyperplane is determined, and the hyperplane is the classification boundary of the background color and the non-background color of the to-be-matted image; and determining the probability that each pixel point is the foreground region of the to-be-matted image based on the distance corresponding to each pixel point, and performing matting processing on the to-be-matted image based on the probability. According to the embodiment of the invention, the distribution range of the background color can be accurately defined by using a high-dimensional hyperplane, so that the matted foreground region and background region are more accurate, and the matted image with natural transition is obtained.

A method is provided for manufacturing a decorative sheet for decorative panels. The method may involve providing a first printed substrate having a printed color patch having at least one printed color spot. The first printed substrate may be subjected to at least a predetermined operation that causes a color shift of the color spot. A first color coordinate set may be determined for the color spot. A first ICC profile may be determined using the first color coordinate set. A first master image may be visualized on a display device using the first ICC profile. An image processing operation may be performed on the first master image to obtain a second master image during the visualization. The second master image may be printed on a second substrate to obtain the decorative layer.