65 results about "Chromatic vision" patented technology

The invention discloses an individualized color vision modeling method, which is based on the hypothesis of'color vision fuzzy ellipse ', firstly, modeling the color perception difference of an individual into a Markov fuzzy region around a reference color point, and extracting a main axis direction as a perception insensitive axis. By constructing an interactive perception evaluation task, recognizable critical responses of a user to different color paths are collected, and a plurality of mahalanobis distance matrixes are fitted according to the recognizable critical responses. And solving an intersection region in the main axis direction of all fuzzy ellipses by adopting a linear programming or geometric constraint optimization algorithm, and taking the intersection region as a core sensing coordinate of a user color vision structure. The method has the advantages of being noninvasive, easy to operate, high in adaptability and the like, perception differences of normal individuals and color vision abnormal individuals can be finely distinguished, and a continuous and explainable color vision characterization model is constructed. The method has high fitting precision for color weakness users, can effectively support practical applications such as image recoloring, personalized display adjustment and color vision training, and has wide clinical assistance and intelligent interaction potential.

It is difficult for people with color vision deficiency (CVD) to distinguish between certain colors, e.g., reds and greens may be indistinguishable, causing a loss of information. Image recoloring, daltonization, techniques aim to improve the experience for people with CVD. Preserving luminance between the original image as seen by a person with normal color vision and someone with a CVD assists in preserving image appearance. Conventional algorithms attempt to daltonize images by exploiting the content of the image itself. While this is a suitable idea for an image in isolation, temporal inconsistencies (e.g., flickering) occur when applied to a stream of images, as a color c could be mapped to a color a in one frame and b in another. In contrast, the luminance-preserving technique operates on pixels and provides a consistent mapping and therefore is temporally stable.

A color evaluation system includes an acquisition unit that acquires reference color information related to a reference color, a subject model that indicates recognition of the color by a subject, and a reference model that indicates recognition of the color by a reference color observer; a calculation unit that calculates a subject response indicating recognition of the reference color by the subject based on the reference color information and the subject model, and calculates a reference response indicating recognition of the reference color by the reference color observer based on the reference color information and the reference model; and a comparison unit that calculates a response difference as a difference between the subject response and the reference response.

A film with a hydrophobic water-insoluble dye embedded in polyvinyl alcohol (PVA) is disclosed. The dye is uniformly distributed throughout the film and the film has substantially no organic solvents. The film may be attached to the center of a contact lens. Such a contact lens may be used to correct or improve color vision for people with a color vision deficiency.

A computer-implemented method for processing medical images, the method including receiving one or more of medical images of at least one pathology specimen, the pathology specimen being associated with a patient, wherein the medical image is a stained histology image. The method may further include receiving a stain type associated with the one or more medical images and identifying a color vision deficiency for one or more users. Next the method may include identifying a pixel transformation for the one or more medical images based on the stain type and color vision deficiency of the one or more users. Next the method may include applying a pixel transformation to each pixel within the one or more medical images. Lastly the method may include displaying the transformed one or more medical images to the one or more users.

This invention relates to a testing system for assessing color vision variability in a test subject (7). The testing system includes at least two test carriers (1), each of which is provided with a two-dimensional pattern (4) comprising a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each of the at least two test carriers (1) are made from a combination of at least two different dyes representing metameris colors. The samples (3) and / or the background (2) display color scaling in at least two directions, such that each of the at least two test carriers (1) is configured to provide a point (PIS) from which the test subject (7) can select the most closely matched metameris color of the sample (3) and the background (2) from the two-dimensional pattern (4). C The system further includes a test illumination unit (5) configured to provide light for color vision variability assessment, the light having a specific spectral power distribution. The system also includes a processing unit (6) configured to calculate the point of interest (PIS) selected by the test subject (7). C ) and reference point (PIS) B The changes are compared to predict the color matching function and / or determine the congenital and / or acquired color vision deficiencies of the test subject (7), using the reference point (PIS). B The power distribution is calculated by the processing unit (6) based on data from a predefined standard observer and taking into account the specific spectral power distribution of the light from the test illumination unit (5).

This invention relates to the field of computer vision and image processing technology, and discloses a color vision anomaly correction method based on color transformation. The method includes: first, converting the input image to the CIE Lab space; calculating the color confusion degree of pixels using an LMS simulation model to generate a target mapping curve; extracting color components to calculate the relative chromaticity difference quotient, and obtaining smoothing mask weights through filtering; subsequently constructing hue constraint features based on RGB energy ratios, performing differential compensation on the red and green channels, and using the energy recovery coefficient for constant brightness closed-loop constraints; for continuous video streams, introducing prior values ​​of spatial smoothness and temporal continuity to construct a spatiotemporal joint optimization objective function and obtaining the optimal solution; finally, using a local weight mask in the HSV space to guide the smooth fusion of the original signal and the mapped signal. This invention effectively eliminates spatial boundary artifacts and video temporal flicker, enhancing the distinguishability of confused colors while maintaining the color naturalness and brightness constancy of the image.

The invention discloses a multi-modal interactive color vision screening system and method, and relates to the technical field of color vision screening, and the key points of the technical scheme comprise the following steps: obtaining a multi-dimensional scene reference parameter, a student sight tracking calibration parameter and a parameter attribute type of color vision screening; capturing sight track real-time monitoring data and screening scene dynamic adjustment data of a target student; performing comparative analysis on the matched calibration item and a calibration standard item corresponding to the matched calibration item to obtain a calibration abnormal item in the matched calibration item; analyzing according to the missing calibration item to obtain a first calibration abnormal coefficient of color vision screening in the target calibration monitoring domain; analyzing according to the calibration anomaly item to obtain a second calibration anomaly coefficient of color vision screening in the target calibration monitoring domain; obtaining a comprehensive calibration abnormal coefficient according to the first calibration abnormal coefficient and the second calibration abnormal coefficient; and outputting a color vision screening report according to the comprehensive calibration abnormal coefficient. The method has the effect of improving the efficiency and generalizability of color vision screening.

To allow a minority color vision person to obtain color vision coincident with that of many standard color vision persons by coping with an optical characteristic of a display device and an individual difference in color vision.SOLUTION: A pre-conversion image 100 is displayed on a display 130 for a majority color vision person via a normal display device 120 on one hand, and is displayed on a display 170 for a minority color vision person via a color vision correction device 150 on the other hand. In color vision correction device 150, correction calculator 160 performs correction conversion calculation on the RGB data (R, G, B) according to correction conversion calculation program 162 to obtain corrected RGB data (R ', G ', B '). At this time, the correction conversion is performed so that the cone stimulation values (L, M, S) for a person with polychromatism who views the display 130 and the cone stimulation values (L ', M ', S ') for a person with minority color vision who views the display 170 match.SELECTED DRAWING: Figure 2

A color generation system is provided with: an acquisition unit that acquires a reference spectrum, which is a spectrum of a reference color, and a subject model that represents a color vision system of a subject; a response calculation unit that calculates, as a reference response, a response from the color vision system of the reference color vision person whose reference color has been visually recognized, on the basis of a predetermined reference model indicating the color vision system of the reference color vision person and the reference spectrum; a spectrum calculation unit that calculates a conversion spectrum for causing the subject model to output a response that coincides with or approximates the reference response; and a generation unit that generates a corresponding spectrum, which is a spectrum of a corresponding color corresponding to the reference color, on the basis of the converted spectrum.

To provide manufacturing information for manufacturing a color-producing material for providing colors in consideration of color vision diversity.SOLUTION: In an information presentation system 1, a color conversion system comprises: an acquisition unit that acquires information about a reference spectrum of a reference color-producing material that serves as a reference; a response calculation unit that, on the basis of the reference spectrum, calculates a matching spectrum for causing a response in a subject that coincides with or approximates a response from the color vision system of a reference color vision person who has visually recognized the reference color-producing material; and a memory that stores information about a plurality of raw material spectra corresponding respectively to a plurality of raw material color-producing materials to be mixed, and a material selection system comprises: a selection unit that uses information about the matching spectrum and the information about the plurality of raw material spectra to select, from among the plurality of raw material color-producing materials, a plurality of mixed materials that emit a spectrum that coincides with or approximates the matching spectrum when mixed; and a presentation unit that presents information for identifying the plurality of mixed materials.SELECTED DRAWING: Figure 1

This invention provides an image processing device, an image processing method, and an image processing program that enable individuals with color vision deficiency to distinguish between different colors through simulation and clustering. [Solution] The image processing device is an image processing device that converts input image data input to an input device into output image data within a set color gamut on an output device, and includes: a simulation image generation unit that performs a dichromacy simulation on the input image data in the input device to generate a color vision simulation image; an input color information conversion unit that converts the simulation image generated by the simulation image generation unit into an XYZ color system; a confusion color information storage unit that stores confusion color information relating to confusion color lines that show the distribution of colors that are difficult for colorblind persons to distinguish; and a clustering processing unit that performs clustering to classify multiple similar colors and aggregate them into a representative number of colors.

The application provides a light emitting device, a design method, a medium, a display device and an electronic device. The design method comprises: obtaining spectral response information corresponding to a color vision deficiency population; obtaining a first color gamut range according to the spectral response information; obtaining a second color gamut range corresponding to a normal color vision population; configuring a light emitting spectrum of the light emitting device, so that a proportion of the first color gamut range covering the second color gamut range reaches a preset threshold. The light emitting device, the medium, the display device and the electronic device are corresponding solutions of the design method. The application not only expands the color gamut range of the color vision deficiency population to form color perception, but also improves the accurate perception and resolution ability of the color vision deficiency population to colors, realizes picture sharing of the color vision deficiency population and the normal color vision population, and switches multiple viewing modes.

The invention belongs to the technical field of visual inspection, and particularly relates to a visual function inspection device for oblique amblyopia patients, a second motor is arranged, when the second motor is started, an output shaft of the second motor drives a second rotating shaft and a second gear of a 120-degree special-shaped structure to rotate, and the second gear is meshed with a third gear on the outer side of an optical filter rotating disc; the optical filter is formed by combining a red optical filter, a green optical filter and a transparent optical filter, a second rotating shaft drives another optical filter turntable to synchronously rotate through synchronous transmission of a chain wheel, and a second gear rotates by a circle to just drive the optical filter turntable to switch one mode, so that the switching of the red optical filter, the green optical filter and the transparent optical filter can be accurately realized, and at the moment, one eye of a patient is close to a detection opening; the sighting marks on the detection plate are observed through the observation holes, and detection of functions related to monocular vision, color vision and refraction is completed by combining conversion of modes of the three optical filters and recognition conditions of a patient on a visual chart and the color vision sighting marks.

The embodiment of the invention provides a visual enhancement method for color vision disorder, electronic equipment and a medium, and belongs to the technical field of artificial intelligence. The method comprises the following steps: performing visual enhancement on an original training image through an original visual enhancement model to obtain a visual enhancement image aiming at the performance of color vision disorder; performing color discrimination on the vision enhancement image through a color vision color simulation model so as to perform model training on the original vision enhancement model according to the calculated target loss values of the vision enhancement image, the original training image, the target color discrimination name and the real color name; and performing visual enhancement on the target image through the trained visual enhancement model. According to the embodiment of the invention, color name discrimination is carried out on the vision enhancement image through the color vision color simulation model so as to simulate a color naming process perceived by people with color vision disorder, and the vision enhancement model is trained in combination with the target loss value, so that the people with color vision disorder are effectively helped to calibrate the consistency of color naming and public language standards.

To provide a uniform combination possibility determination device capable of checking whether two uniforms can be combined. [Solution] A color recognition index calculation unit 14 calculates a color recognition index, which is at least one of the contrast ratio and color difference as seen by a person with normal color vision, and a color recognition index as seen by a person with color weakness, for two uniform colors selected from the uniform colors registered in a uniform database 10. A determination unit 17 compares the color recognition indexes for people with normal color vision and those for people with color weakness calculated by the color recognition index calculation unit 14 with reference values, and determines the relationship in magnitude between the color recognition indexes for people with normal color vision and the reference values, and between the color recognition indexes for people with color weakness and the reference values. A display control unit 18 displays on a display unit 20 whether the two uniforms are suitable for people with normal color vision and whether the two uniforms are suitable for people with color weakness, according to the determination result by the determination unit 17.

The invention discloses an objective index method for evaluating a dichroism contrast improvement condition. The method comprises the following steps: converting a normal image and a first image represented by a red-green-blue color space into a first conversion image and a second conversion image represented by a laboratory color space; obtaining an initial pixel in the first conversion image; respectively calculating the difference values of the brightness component, the red-green component and the yellow-blue component in the eyes of the person with normal color vision; target pixels which are difficult to distinguish are determined in the initial pixels according to the difference value; respectively calculating a plurality of experimental color differences in combination with the weight adjustment coefficient of the lightness difference; the plurality of experimental chromatic aberration are chromatic aberration of the target pixel in the eyes of the abnormal color vision person and the normal color vision person in the first conversion image and chromatic aberration of the target pixel in the eyes of the abnormal color vision person in the second conversion image, an objective index value corresponding to the first image is calculated in combination with a chromatic aberration value adjustment coefficient, and then an optimal image is screened out.

The invention relates to the design, fabrication, structure, and use of filters for addressing Color Vision Deficiency (CVD).

The invention discloses a color vision assisting method and device based on intelligent glasses, a medium and the intelligent glasses, the method is applied to the intelligent glasses with a built-in camera and a processor, in the implementation process of the method, real-time video streams in the visual field of a user wearing the intelligent glasses are collected through the camera, the real-time video streams are sent to the processor, and the real-time video streams are sent to the processor; the processor is used for identifying at least part of objects involved in the real-time video stream through the processor so as to determine object information of the at least part of objects, the object information at least comprises category name information and color information, and then color vision auxiliary prompting is carried out on a user according to the object information.

The invention relates to the technical field of color blindness diagnosis, and particularly provides a color blindness personalized interactive evaluation method and system based on augmented reality, and the method comprises the steps: building a color mapping relation between a physical color card and an augmented reality environment based on a standard illumination condition; generating a hue test task composed of a plurality of virtual color blocks corresponding to the color mapping relation through the augmented reality environment; based on a natural interaction mode, assisting the user in sorting the virtual color blocks and recording a sorting result to obtain color vision defect features; local or cloud quantitative analysis is carried out on the color vision defect features, color vision quantitative error parameters are calculated, a user color vision perception model is constructed, and the color vision defect type and severity level of the user are output based on the user color vision perception model; and outputting a color vision evaluation report and generating a targeted color optimization scheme according to the user color vision perception model, the color vision defect type and the severity level. According to the invention, a full-process solution from accurate evaluation to personalized color adaptation is provided for color blindness users.

The invention discloses a traffic signal display method, device and system and a storage medium, and the method comprises the steps: obtaining a traffic signal in a vehicle driving region in a vehicle operation process; converting the traffic signal into information of a preset type which does not need to be recognized by means of color perception; displaying the information of the preset type in a skyline screen; and adaptively adjusting the recognizable degree of the preset type of information in the skyline screen. By adopting the scheme provided by the invention, the accuracy of identifying the traffic lights when people with color vision disorder drive the vehicle is improved.

The invention discloses a method and system for measuring color vision based on pupillary reflex, which stimulates pupils based on multi-wavelength colors, covers various wavelengths of visible light, and can trigger various pupillary reflex modes due to different absorption and reflection characteristics of light with different wavelengths in retina and different activation conditions of visual cells. The processing information of the visual system on the color light signal can be completely obtained by comprehensively collecting the dynamic parameters, the overall state of the color vision is accurately reflected, and the problem of insufficient wavelength coverage in the prior art is solved; secondly, in analysis and evaluation, feature extraction is performed on standardized dynamic parameters to obtain feature parameters, the integrated model takes the feature parameters as input, and color vision disorder qualitative results and quantitative results are output at the same time according to internal logic in a qualitative and quantitative organic combination mode, so that color vision disorder evaluation is more comprehensive, accurate and deep; the requirement for accurately evaluating the color vision state is met, and the defect that qualitative analysis and quantitative analysis cannot be combined in the prior art is overcome.

The invention relates to a method for determining a color-vision deficiency of a driver (1) of a vehicle (2) by analyzing a response time and analyzing eye movements with respect to contents displayed on a display unit (3) in the vehicle, in which method, when a color-vision deficiency has been determined, a color adjustment of the display unit (3) corresponding to the determined color-vision deficiency is carried out, characterized in that, when the driver (1) provides approval to carry out the determination of a color-vision deficiency, an interaction value for determining a color-vision deficiency is identified on the basis of the identified response time, the eye movements, and the speed with which the driver (1) reads display contents, and the driver (1) is informed by the vehicle if a color-vision deficiency has been determined.

The invention generally relates to optical filters that provide regulation and / or enhancement of chromatic and luminous aspects of the color appearance of light to human vision, generally to applications of such optical filters, to therapeutic applications of such optical filters, to industrial and safety applications of such optical filters when incorporated, for example, in radiation-protective eyewear, to methods of designing such optical filters, to methods of manufacturing such optical filters, and to designs and methods of incorporating such optical filters into apparatus including, for example, eyewear and illuminants.

This application provides a color correction method for a display device and an image. The method includes: obtaining a correction type selected when triggering color correction of an initial image; obtaining a correction level based on the correction type input; converting the correction level into a floating-point number and generating an adjustable matrix; performing a matrix transformation on the initial image to obtain an analog matrix; performing a difference operation on a preset value and the analog matrix to obtain a missing matrix; and performing a first product operation on the adjustable matrix and the missing matrix to obtain a compensation matrix; performing a first summation operation on the analog matrix and the compensation matrix to obtain a correction matrix for the initial image; obtaining an output matrix of the corrected image based on the initial color matrix and the correction matrix; and outputting the corrected image according to the output matrix. The method generates different correction matrices according to the user's different degrees of color vision impairment to dynamically correct image colors, maximizing the retention of the number of colors that the user can recognize, and solving the problem of high image color distortion rate.

A display apparatus may include: groups of light-emitting diodes (LEDs), each of the groups of LEDs including a red LED, a green LED, and a blue LED; and a processor configured to control the groups of LEDs. In a color vision deficiency mode, the processor may be configured to: obtain a color difference value between image blocks corresponding to the groups of LEDs; determine at least one from among a current weight of the red LED of a LED group, a current weight of the green LED of the LED group, and a current weight of the blue LED of the LED group, based on the color difference value between the groups of LEDs; and control a current supplied to the at least one from among the red LED, the green LED, and the blue LED, based on the image data and the current weight that is determined.

Provided is the intravitreal or subretinal dosing of recombinant adeno-associated virus (rAAV)-based gene therapies for the treatment of color vision deficiencies such as achromotopsia.

The invention discloses a barrier-free toolbar technical scheme based on a WeChat applet, and relates to the technical field of front-end development, the barrier-free toolbar technical scheme comprises a barrier-free toolbar system, the barrier-free toolbar system comprises a theme style component, a state management module, a global configuration tool, a user interaction component and a barrier-free function component, the theme style component comprises a black.js theme style file, a blue.js theme style file, a light.js theme style file, a white.js theme style file and a tellow.js theme style file and is used for defining different color matching schemes, the state management module is used for managing states related to theme styles by utilizing a theme.js file, and according to the barrier-free toolbar technical scheme based on the WeChat applet, through the color matching switching and click screen reading functions, the color matching of the WeChat applet can be realized, and the color matching efficiency of the WeChat applet can be improved. The browsing experience of users with visual impairment and the like is obviously improved; meanwhile, slot configuration and global introduction are adopted, the workflow of developers is simplified, the technical threshold is reduced, in addition, various crowds with abnormal color vision are supported, the containment of digital products is enhanced, and the universal accessibility of Web content is powerfully promoted.

The invention relates to a method for determining a color vision deficiency of a driver (1) of a vehicle (2) by evaluating a reaction time and evaluation of eye movements in relation to a display content of a vehicle-side display unit (3), wherein, in the case of a determined color vision deficiency, a color adjustment of the display unit (3) corresponding to the determined color vision deficiency is carried out, characterized in that, if the driver (1) consents to the determination of color vision deficiency based on the determined reaction time, eye movements and reading speed of the driver (1) in relation to a display content, an interaction value for determining color vision deficiency is determined and the driver (1) is informed by the vehicle if color vision deficiency is detected.