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31results about How to "Improve color distortion" patented technology
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Image dehazing method and system based on dark channel and non-local prior
ActiveCN106530246AImprove transmittanceImprove color distortionImage enhancementImage analysisInformation processingTransmittance
The invention discloses an image dehazing method and system based on a dark channel and a non-local prior, which belongs to the technical field of image information processing. The image dehazing method can reasonably recover a degraded image collected in the haze weather. The method comprises the following steps of (1) calculating a dark channel image of a hazed image; (2) estimating the atmospheric light intensity of the hazed image according to the dark channel image; (3) estimating the transmissivity of the image based on the non-local prior; (4) correcting a transmittance image; and (5) using an atmospheric scattering model to restore a dehazed image. The invention also discloses an image dehazing system based on the dark channel and the non-local prior. The invention can restore scene information in the image realistically and naturally, and the algorithm has the advantages of low complexity, fast running speed and wide application prospect.
Owner:DALIAN UNIV OF TECH
Image defogging method based on a generative adversarial network
ActiveCN109493303AAvoid artificial designDefog fastImage enhancementImage analysisDiscriminatorPattern recognition
The invention discloses an image defogging method based on a generative adversarial network. The method comprises the following steps: 1) obtaining sample data; 2) taking a real foggy image in the sample data as input data of a first generator, wherein the first generator generates a primary fogless image; wherein a real fog-free image in the sample data is used as input data of a second generator, and the second generator generates a primary foggy image; the first discriminator feeds back an error between the primary foggy image and the real foggy image to the second generator, the second discriminator feeds back an error between the primary foggy image and the real fogless image to the first generator, the second generator and the first generator reduce the error, and the truth of the generated image is improved; the generator and the discriminator perform repeated confrontation training to obtain an optimal defogging network model; and (3) performing image defogging. A generative adversarial network structure and a loss function are adopted, network training does not need a foggy-fog-free matching image of the same scene, and meanwhile it is guaranteed that the color of the image is not distorted before and after defogging.
Owner:XIANGTAN UNIV
Projection system
Disclosed is a projection system. The projection system comprises a first light source, a second light source, a color gamut judgment module, a light source controller and a light modulation apparatus; the first light source is used for giving out primary light for modulating an image; the primary light can be used for modulating an image within a first color gamut range; the second light source is used for giving out supplementing light for expanding the color gamut of at least one kind of light from the primary light emitted from the first light source; the color gamut judgment module is used for receiving image data and judging a color gamut range of a to-be-displayed image according to the image data, and outputting a control signal according to the color gamut range; the light sourcecontroller is used for receiving the control signal and controlling the starting and closing of the first light source and the second light source according to the control signal to enable the color gamut range which can be modulated by the light emitted from the first light source and the second light source to satisfy the color gamut range of the to-be-displayed image; and the light modulation apparatus is used for performing image modulation on the primary light and the supplementing light to generate projection light needed by the to-be-displayed image.
Owner:APPOTRONICS CORP LTD
Underwater image color compensation method based on electromagnetic theory
InactiveCN108564543ATroubleshoot technical issues with poor restoration qualityIncrease contrastImage enhancementImage analysisElectromagnetic theoryElectromagnetic wave transmission
The invention provides an underwater image color compensation method based on the electromagnetic theory and belongs to the technical field of image restoration. According to the technical scheme, anunderwater optical imaging model is established according to the propagation characteristics of light in water, and the absorption of light of a red band is absorbed by water to seriously cause R channel brightness attenuation of an image. The distance between a scene and a camera and the attenuation coefficient of an R channel caused by water absorption are obtained according to the electromagnetic wave transmission theory, and the transmission coefficient of the R channel is finally obtained. According to the method, the background light and the transmission coefficient of each channel can be effectively estimated, and the color of the image is compensated. Experimental results show that the image contrast and sharpness can be effectively improved and color distortion can be improved inthe invention compared with a traditional underwater image restoration algorithm.
Owner:CHANGCHUN UNIV OF SCI & TECH
Method of converting RGB to RGBW
The invention provides a method of converting RGB to RGBW. The method comprises steps: the gray scale value of an RGB signal of each pixel point in the current frame of image is acquired; the gray scale value of the RGB signal of each pixel point is converted to a brightness value, and the brightness value is subjected to normalization processing; the gain value of each pixel point after normalization processing is calculated, the gain values of pixel points meeting a preset requirement in the whole frame of image are counted, and a cumulative distribution curve for the gain values of the pixel points in the whole frame of image is obtained; one longitudinal coordinate value of the cumulative distribution curve set by a user is received, and a horizontal ordinate value corresponding to the longitudinal coordinate value serves as a frame gain value; according to the frame gain value and a preset rule, an output value of RGBW is acquired and outputted; and according to the size of the frame gain value, the brightness of backlight is adjusted. While the brightness of the image is enhanced, the color distortion problem appearing in an RGBW display mode is improved, and the saturation of the image is improved.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Method for correcting color domain in treating video signals of LED display screen
InactiveCN101854558AStrong color expressionImprove color gamutColor signal processing circuitsStatic indicating devicesDistortionOrder system
The invention discloses a method for correcting a color domain in treating the video signals of an LED display screen, in particular to a method for expanding the color domain of a video source signal by using only one transition matrix, in order to overcome the disadvantages that the color domain of an LED display screen is reduced and the algorithm is complicated in the existing method. The method comprises the following steps: completing the mutual conversion of the video source system between a tri-chromatic system and a CIE1931XYZ color order system by a color / space conversion module; acquiring the chromaticity coordinate of the signal in the CIE1931Yxy chromatic diagram by an XYZ / Yxy normalizing module; expanding and correcting the chromaticity coordinate by one transition matrix in the Yxy colorimetric system; acquiring a new XYZ value from the corrected chromaticity coordinate by a Yxy / XYZ denormalizing module; and acquiring the expanded tri-chromatic value by the color / space conversion module. Accordingly, the invention can emphasize the high color expression of the LED display screen and improve the color distortion thereof by the simpler method.
Owner:DALIAN MARITIME UNIVERSITY
Flexible defogging method based on dark channel improvement and image fusion
The invention discloses a flexible defogging method based on dark channel improvement and image fusion. The method comprises the steps that 1, a dark channel graph of a foggy image I(x,y) is calculated; 2, first 0.1% of pixels with maximum brightness are selected in the dark channel graph, and then corresponding maximum brightness values of the pixels in I(x,y) are selected to serve as estimated values of atmosphere light A; 3, rough transmittance of I(x,y) is calculated; 4, box-oriented filtering is used to refine the rough transmittance; 5, the refined transmittance is corrected based on a quadratic function; 6, object light is restored, and a preliminary defogged image is obtained; 7, a pseudo-defogged image of I(x,y) is calculated; and 8, the preliminary defogged image and the pseudo-defogged image are fused to obtain a final defogged image. The method has the advantages that calculation speed is high, and the distortion phenomenon of the defogged image in an adjacent sky region isrelieved; and through weight-adaptive image fusion, the defogging effect and image colors are well balanced, and the phenomenon that the defogged image is dark in color is relieved.
Owner:NANJING UNIV OF SCI & TECH
CNN-based low-illumination image enhancement method with color recovery and edge sharpening effects
PendingCN113256510AImprove color distortionImproved ability to express detailsImage enhancementImage analysisRadiologyNuclear medicine
A CNN (Convolutional Neural Network)-based low-illumination image enhancement method with color recovery and edge sharpening effects is improved on the basis of an original RetinexNet algorithm, and comprises the following steps: firstly, inputting a low-illumination image and a normal image which are paired into a decomposition network to obtain respective reflection components and illumination components; and then carrying out denoising processing on the reflection component of the low-illumination image and then carrying out sharpening processing to obtain a final reflection component; introducing a color loss function at the enhancement network, and inputting the illumination component of the low-illumination image to obtain an adjusted illumination component; finally, carrying out element-by-element multiplication on the two adjusted components to obtain an enhancement result of the original low-illumination image. Compared with the original method, the color distortion phenomenon after image enhancement is improved, the detail information of the image is effectively enhanced, and the visual effect of the image is improved.
Owner:ZHEJIANG UNIV OF TECH
Method and device for converting three-color data to four-color data
ActiveCN109377962AReduce variance in projected brightnessStrong penetrating powerStatic indicating devicesComputer scienceBrightness perception
The invention provides a method and a device for converting three-color data to four-color data. The conversion method comprises the steps of: determining a normalized stimulus value signal of a whitesub-pixel according to a minimum value of a first stimulus value signal after gain processing, a second stimulus value signal after gain processing and a third stimulus value signal after gain processing; and regarding a difference value between the first stimulus value signal after gain processing and a red stimulus value signal in a tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a red sub-pixel, regarding a difference value between the second stimulus value signal after gain processing and a green stimulus value signal in the tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a green sub-pixel, and regarding a difference value between the third stimulus value signal after gain processing and a blue stimulusvalue signal in the tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a green sub-pixel, so as to improve the penetration rate of light and screen brightness while solving the problems of large viewing angle color cast and color distortion.
Owner:HKC CORP LTD
Reconstruction method of picture-element color information
InactiveCN1992909AHigh precisionAccurate Green Interpolated ValuesGeometric image transformationPicture signal generatorsReconstruction methodHorizontal and vertical
The invention relates to a method for rebuilding color information, wherein it comprises that: via the position weight of pixels near each red / blue pixel, calculating out the color signal difference at horizontal and vertical directions; then via said difference, distributing weight values reversed; averaging the nearby two green pixels vertically and horizontally to obtain two average values; multiplying two average values with relative direction weight values, summing them into the green information of each blue / green pixel; then using dual-linear interpolation method to compensate the lost red and blue elements; using one middle-value selector to correct aberration. The invention has high accuracy, high resolution and uniform color.
Owner:ALTEK CORP
Composite protective layer and flexible display unit
InactiveCN107984839AImprove color distortionImprove distortionNon-macromolecular adhesive additivesSynthetic resin layered productsDistortionPolyimide
The invention relates to the field of display and in particular relates to a composite protective layer and a flexible display unit. The composite protective layer comprises a polyimide layer, and a first hard coating and a first transparent optical adhesive layer which are respectively arranged on two sides of the polyimide layer. At least one of the first hard coating and the first transparent optical adhesive layer contains a nanoscale coloring agent. The invention further relates to a flexible display unit comprising a flexible display panel and the composite protective layer arranged on alight-exiting side of the flexible display panel. The nanoscale coloring agent has a spectrum adjusting effect in a visible light band. The nanoscale coloring agent is added into the first hard coating or the transparent optical adhesive layer, so that light yellow introduced by the polyimide layer can be compensated to produce a needed color, and particularly the polyimide layer is matched to produce white transmission light; and therefore, the condition of color distortion is improved.
Owner:BOE TECH GRP CO LTD
Underwater image enhancement method combining multi-channel equalization and multi-scale fusion
PendingCN114821021AImprove color distortionImprove low contrastImage analysisCharacter and pattern recognitionImage contrastGray level
The invention discloses an underwater image enhancement method combining multi-channel equalization and multi-scale fusion, and belongs to the field of underwater image enhancement, and the underwater image enhancement method combining multi-channel equalization and multi-scale fusion is realized by the following steps: step 1, performing multi-scale image enhancement; compensating the red channel by using the green channel and secondarily reinforcing the red channel through the mean value of the regional red channel; step 2, using a self-adaptive platform histogram to extend the gray scale range of the R, G and B three channels in a balanced manner and redistributing gray scale values; and step 3, carrying out multi-scale fusion on the brightness V (Value) components processed by the gamma algorithm, the GUM algorithm and the CLAHE algorithm. The method solves the problem of low definition of the underwater degraded image, improves color distortion, improves image contrast and brightness, has obvious enhancement effects on different scenes, and has good generalization adaptability.
Owner:KUNMING UNIV OF SCI & TECH
OLED display module and display
InactiveCN109841647AImprove picture qualityImprove color distortionSolid-state devicesSemiconductor/solid-state device manufacturingImaging qualityDisplay device
The invention relates to the technical field of the OLED display and particularly relates to an OLED display module and a display for improving the energy conversion rate while satisfying red light with the wavelength of 610nm to 650nm. In an embodiment of the invention, the OLED display module includes a sub-pixel unit which includes a cathode, an anode and a light emitting layer, wherein the cathode is located on the anode, the light emitting layer is located on the anode, the and the light emitting layer comprises a quantum light emitting material layer when the sub-pixel unit is used for emitting red light. According to the display module, a color distortion phenomenon can be improved while the emission of red light with the wavelength of 610nm to 650nm is satisfied, and the image quality of the display module is improved.
Owner:EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
Reconstruction method of picture-element color information
InactiveCN100559885CHigh precisionAccurate Green Interpolated ValuesGeometric image transformationPicture signal generatorsColor effectReconstruction method
The present invention provides a method for reconstructing pixel color information, which first assigns a weight ratio according to the distance of the pixels around each red / blue pixel, and calculates the color signal difference in the horizontal and vertical directions, and then calculates the color signal difference according to the signal difference. The weight value is assigned in inverse proportion to the weight value, and the two green pixel values adjacent to the pixel to be reconstructed are averaged along the horizontal and vertical directions respectively to obtain two average values, and then the two average values are multiplied by the weight values of their respective directions and then added together, The resulting weighted sum becomes the green element information in each red / blue pixel; then bilinear interpolation is used to complement the missing red and blue elements of other pixels, and then corrected by a median selector chromatic aberration. Therefore, the reconstructed color information of the present invention has the advantage of high accuracy, and can achieve the effect of high resolution and uniform color.
Owner:ALTEK CORP
Method for correcting color domain in treating video signals of LED display screen
InactiveCN101854558BStrong color expressionImprove color gamutColor signal processing circuitsStatic indicating devicesGamutLED display
The invention discloses a method for correcting a color domain in treating the video signals of an LED display screen, in particular to a method for expanding the color domain of a video source signal by using only one transition matrix, in order to overcome the disadvantages that the color domain of an LED display screen is reduced and the algorithm is complicated in the existing method. The method comprises the following steps: completing the mutual conversion of the video source system between a tri-chromatic system and a CIE1931XYZ color order system by a color / space conversion module; acquiring the chromaticity coordinate of the signal in the CIE1931Yxy chromatic diagram by an XYZ / Yxy normalizing module; expanding and correcting the chromaticity coordinate by one transition matrix in the Yxy colorimetric system; acquiring a new XYZ value from the corrected chromaticity coordinate by a Yxy / XYZ denormalizing module; and acquiring the expanded tri-chromatic value by the color / space conversion module. Accordingly, the invention can emphasize the high color expression of the LED display screen and improve the color distortion thereof by the simpler method.
Owner:DALIAN MARITIME UNIVERSITY
Low-illuminance image enhancement method and system
PendingCN114581318AImprove extraction abilityImprove color distortionImage enhancementImage analysisAmbilightFeature screening
The invention discloses a low-illuminance image enhancement method and system, and the method comprises the steps: carrying out the multi-scale feature extraction of a low-illuminance image based on a plurality of convolution kernels, and carrying out the splicing of the multi-scale features, and obtaining a multi-size feature map; performing feature screening on the feature map by using a spatial attention mechanism to obtain a spatial attention feature map; mapping the spatial attention feature map based on three residual blocks connected in series to obtain high-dimensional features; performing weight processing on the high-dimensional features to obtain a channel attention feature map; carrying out channel reduction and logarithm operation on the channel attention features to obtain input image environment illumination component estimation; and processing the image according to the Retinex theory to obtain an enhanced image. According to the method, rich feature information of a low-illumination image is obtained through multi-scale convolution, the depth of the network is effectively deepened by using a residual block, image features are mapped to a high dimension, and the extraction capability of the network on significant information is improved by using space and channel attention in the network.
Owner:INST OF INTELLIGENT MFG GUANGDONG ACAD OF SCI
Image sharpening method for TFT-LCD color display
InactiveCN101667405BReduce spillageReduce noiseColor signal processing circuitsStatic indicating devicesSharpeningDistortion
The invention discloses an image sharpening method for TFT-LCD color display. Taking adjacent five pixel points in a row as a processing unit, the image sharpening method can reduce the storage capacity and the calculation amount, is particularly suitable for color display of a small-size TFT-LCD and easy to be realized in a singlechip-integrated TFT-LCD drive control chip. The visual characteristic of human eyes is considered, sharpening factors are calculated according to the gray value of pixel points, and the image sharpening noise is reduced. By adopting zoom factors and different sharpening strengths aiming at five image areas with the gray changing from the flatness to the sharpness, the invention better solves the problem of the gray value overflow; and by using an energy dispersion filter, the invention obviously improves the color distortion phenomenon of sharpened images.
Owner:西安龙腾微电子科技发展有限公司
Display device
PendingCN114822279AImprove color castImprove color distortionSolid-state devicesCathode-ray tube indicatorsMedicineDisplay device
The invention provides a display device. At least one primary color of a red primary color, a green primary color and a blue primary color of the display device is formed by mixing at least two primary colors of three primary colors. The display device can solve the problem of color distortion.
Owner:CORETRONIC
projection system
Provided is a projection system (100), comprising a light source apparatus (110), a light modulation module (140), a projection lens (170) and a light recycling module (160). The light source apparatus (110) comprises a first light source (111) and a second light source (112); the first light source (111) is used for emitting first light; the first light is used for modulating an image in a first colour gamut range; the second light source (112) is used for emitting supplementary light for widening a colour gamut of at least one kind of light in excitation light emitted by the first light source (111); and the supplementary light is used for modulating, together with the first light, an image in a second colour gamut range. The light modulation module (140) is used for carrying out image modulation on the light emitted by the light source apparatus (110) according to image data, so as to generate non-projection light, and projection light required by an image to be displayed. The projection lens (170) is used for receiving the projection light, so as to project the image. The light recycling module (160) is used for recycling the non-projection light to the light modulation module (140) to be reused. The projection system realizes a wider colour gamut range, a better image effect and a higher light use ratio.
Owner:APPOTRONICS CORP LTD
Remote Sensing Image Fusion Method Based on Sparse Tensor Nearest Neighbor Embedding
ActiveCN106651820BImprove distortionImprove color distortionImage enhancementImage analysisRemote sensing image fusionImage resolution
The invention discloses a sparse tensor neighborhood embedding-based remote sensing image fusion method. According to the technical scheme of the invention, the method comprises the following steps of 1), inputting a low-resolution and multi-spectral image M and a high-resolution and full-color image P; 2) dividing the low-resolution and multi-spectral image M into multi-spectral image tensor blocks M1; 3) constructing a high-resolution and multi-mode dictionary HD and a low-resolution and multi-mode dictionary LD based on the high-resolution and full-color image P and the multi-spectral image tensor blocks M1; 4) optimizing the atoms of the high-resolution and multi-mode dictionary HD and the atoms of the low-resolution and multi-mode dictionary LD; 5) solving the tensor sparse coefficient A of the multi-spectral image tensor blocks M1 in the low-resolution and multi-mode dictionary LD; 6) multiplying the tensor sparse coefficient A by the high-resolution and multi-mode dictionary HD, and obtaining a high-resolution and multi-spectral image after the airspace residual compensation. In this way, the information within multi-spectral bands is utilized, and the color distortion of a fused image is reduced. Therefore, the method can be used for remote sensing and target identification.
Owner:XIDIAN UNIV
An Image Dehazing Method Based on Generative Adversarial Network
ActiveCN109493303BAvoid artificial designDefog fastImage enhancementImage analysisPattern recognitionNetwork structure
An image defogging method based on a generative confrontation network, the method comprising: 1) obtaining sample data; 2) the real foggy image in the sample data is used as input data of a first generator, and the first generator generates a fog-free image once ; The real fog-free image in the sample data is used as the input data of the second generator, and the second generator generates a foggy image; the first discriminator feeds back the error between the primary foggy image and the real foggy image to the second generator The generator and the second discriminator feed back the error between the primary fog-free image and the real fog-free image to the first generator, the second generator and the first generator reduce the error and improve the authenticity of the generated image; the generator Perform repeated confrontation training with the discriminator to obtain the optimal dehazing network model; 3) image dehazing. The present invention adopts a generative confrontation network structure and a loss function, and network training does not require foggy-foggy matching images of the same scene, while ensuring that the color of the image before and after defogging is not distorted.
Owner:XIANGTAN UNIV
projection system
A projection system includes a first light source, a second light source, a color gamut judgment module, a light source controller and a light modulation device. The first light source is used to emit primary color light for modulating images, and the primary color light can be used to modulate images within the first color gamut; the second light source is used to emit primary color light that broadens the first light source. Supplementary light for the color gamut of at least one light in the light; the color gamut judging module is used to receive image data and judge the color gamut range of the image to be displayed according to the image data, and output a control signal according to the color gamut range ; used to receive the control signal, and control the opening and closing of the first light source and the second light source according to the control signal, so that the light emitted by the first light source and the second light source can modulate the color gamut range Satisfying the color gamut range of the image to be displayed; the light modulation device is used for performing image modulation on the primary color light and the supplementary light to generate projection light required by the image to be displayed.
Owner:APPOTRONICS CORP LTD
A conversion method from rgb to rgbw
ActiveCN106652937BIncrease brightnessHigh saturationStatic indicating devicesGray levelBrightness perception
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Method for correcting color distortion of photographs by digital photograph exposure system
InactiveCN101998027BFix color distortionImprove color distortionPictoral communicationImaging processingGamut
The invention relates to a method for correcting the color distortion of photographs by a digital photograph exposure system, which comprises the following steps of: programming an image processing program, and correcting color values of red, green and blue components of pixel points one by one in a software mode by a method of grayscale image homogenizing to solve the problem of color distortionof exposure imaging of a color digital exposure system with 3 light crystal display (LCD) imaging; and making a gray image in a color gamut distortion distribution area, after exposing developed and printed photographs, scanning and inputting the exposed photographs to a computer, and comparing with each pixel value of the original image to find an error value to correct the pixel points one by one, so that the standard deviation of the red, green and blue components on the developed and printed grayscale photographs is controlled within 1.0 to fulfill the aim that the color is consistent with that of the original image furthest. The method is simple and easy, has the obvious effect and high reliability and is suitable for the popularization and application of the industry.
Owner:TIANJIN IAT SCI & TECH
Optical wavelength conversion module and illumination module
ActiveCN109424940AImprove lighting qualityImprove color distortionSpectral modifiersNon-linear opticsGreen yellowLight beam
The invention relates to an optical wavelength conversion module which comprises a base plate, a driving device and a first fluorescent material layer. The first fluorescent material layer is arrangedon a first optical area of the base plate. When the heated temperature of the first fluorescent material layer is similar to or the same with the environment temperature, a conversion light beam generated by the first fluorescent material layer is green-yellow light. When the heated temperature of the first fluorescent material layer is similar to or exceeds the preset temperature, a conversion light beam generated by the first fluorescent material layer is yellow light. The driving device is connected to the base plate. When the optical wavelength conversion module is in an operation state,the driving device is suitable for driving the base plate to act, and the first optical area emits yellow light. The invention further provides an illumination module. By means of the above optical wavelength conversion module, the problems of color distortion and brightness lowering caused by the heat extinguishing effect can be better solved.
Owner:CORETRONIC
Display panel, driving method thereof and display device
PendingCN114446223AReduce power consumptionMeet the adjustment accuracy requirementsStatic indicating devicesDriving currentDisplay device
The embodiment of the invention provides a display panel, a driving method thereof and a display device. The display panel comprises a plurality of pixel circuits and a plurality of light-emitting devices, and one pixel circuit is electrically connected with at least one light-emitting device. The pixel circuit comprises a first driving transistor and a second driving transistor, and the channel width-to-length ratio of the first driving transistor is smaller than that of the second driving transistor; wherein the first driving transistor and the second driving transistor are used for respectively providing driving current for the light-emitting device in different time periods. The problem of display color distortion can be improved, and the display effect is improved.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
A kind of manufacturing method of TFT backplane
ActiveCN110517986BImprove color distortionSolid-state devicesSemiconductor/solid-state device manufacturingLiquid-crystal displayDisplay device
The invention discloses a method for manufacturing a TFT backplane, which includes preparing a base substrate 10, forming a first buffer layer 21 on the base substrate 10, and forming a second buffer layer on the first buffer layer 21. 22. Form a plurality of gates 30 and pixel electrodes 40 on the second buffer layer 22, and the gates 30 and pixel electrodes 40 are arranged at intervals; the manufacturing method of the TFT backplane of the present invention uses pixel electrodes on the substrate Electric fields with unequal strengths are formed in the same pixel area of the substrate, which effectively improves the color distortion of large-size liquid crystal displays at large viewing angles and improves the competitiveness of the product.
Owner:合肥领盛电子有限公司
Array substrate and liquid crystal display device
ActiveCN110596941BImprove color distortionImprove transmittanceNon-linear opticsLiquid-crystal displayRefractive index
The application provides an array substrate and a liquid crystal display device. The array substrate includes a substrate and a first light-transmitting layer. The substrate has a first surface and a second surface opposite to the first surface. The first surface is located on the light incident side of the array substrate. At least one first light-transmitting layer is disposed on the first surface of the substrate, the refractive index of the at least one first light-transmitting layer is greater than that of air, and the refractive index of the at least one first light-transmitting layer and the refractive index of the substrate are along the first The light-transmitting layer increases in the direction of the substrate, and the thickness of each first light-transmitting layer satisfies a specific functional relationship with each color light in at least one color light, and the at least one color light is selected from one of blue light, red light and green light. One or two kinds, each color light corresponds to at least one first light-transmitting layer. The deviation of the chromaticity coordinates corresponding to the light emitted by the liquid crystal display device is improved, and the transmittance of the light emitted by the liquid crystal display device is increased.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Method and device for converting three-color data to four-color data
ActiveCN109377962BReduce variance in projected brightnessStrong penetrating powerStatic indicating devicesColored whiteSignal gain
The invention provides a method and a device for converting three-color data to four-color data. The conversion method comprises the steps of: determining a normalized stimulus value signal of a whitesub-pixel according to a minimum value of a first stimulus value signal after gain processing, a second stimulus value signal after gain processing and a third stimulus value signal after gain processing; and regarding a difference value between the first stimulus value signal after gain processing and a red stimulus value signal in a tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a red sub-pixel, regarding a difference value between the second stimulus value signal after gain processing and a green stimulus value signal in the tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a green sub-pixel, and regarding a difference value between the third stimulus value signal after gain processing and a blue stimulusvalue signal in the tristimulus value signal of the white sub-pixel as a normalized stimulus value signal of a green sub-pixel, so as to improve the penetration rate of light and screen brightness while solving the problems of large viewing angle color cast and color distortion.
Owner:HKC CORP LTD
Image defogging method based on improved tolerance mechanism
PendingCN111223052AImprove color distortionAvoid the decline of defogging abilityImage enhancementChemistryComputer science
The invention discloses an image defogging method based on an improved tolerance mechanism, and the method comprises the steps: adding the improved tolerance mechanism to an atmospheric scattering model, obtaining a final image restoration formula, processing a to-be-defogged image O, and obtaining a final restored image F; according to the method, the part of the region which does not meet the dark channel prior rule in the target picture can be compensated more accurately, the defogging capability is prevented from being reduced, and the visual effect of the image is improved.
Owner:JIANGSU UNIV
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