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CN-116548908-B - Color vision test evaluation method and device and electronic equipment

CN116548908BCN 116548908 BCN116548908 BCN 116548908BCN-116548908-B

Abstract

The application provides a color vision test evaluation method, a device and electronic equipment, wherein the method is applied to a controller connected with a test drawing board, the test drawing board is used for presenting a stimulus color block with a designated size at a random position in each test time, a subject can track and react to the position of the stimulus color block, the stimulus color block is formed by two sub-color blocks at a crossing interval, the two sub-color blocks comprise red-green sub-color blocks or yellow Lan Zise blocks, the method comprises the steps of obtaining response data and corresponding stimulus data when the stimulus color block is used for carrying out color vision test on the subject, the stimulus data comprise a plurality of test positions corresponding to the stimulus color block under different color contrasts, the response data comprise a plurality of response positions corresponding to the test positions under each color contrast, and the color vision evaluation value of the subject is determined according to the response data and the stimulus data under each color contrast. The method can solve the problems in the traditional test mode.

Inventors

  • CHEN ZHONGTING
  • CHEN JING

Assignees

  • 华东师范大学
  • 上海体育学院

Dates

Publication Date
20260512
Application Date
20230516

Claims (10)

  1. 1. A color vision test evaluation method is characterized by being applied to a controller connected with a test drawing board, wherein the test drawing board is used for presenting a stimulation color block with a specified size at a random position in each test time, a subject responds to the random continuous variation of the stimulation color block, the stimulation color block is formed by two sub-color blocks at a crossing interval, the two sub-color blocks comprise red-green sub-color blocks or yellow Lan Zise blocks, and the method comprises the following steps: Obtaining response data and corresponding stimulation data when a color vision test is carried out on a subject through a stimulation color block, wherein the stimulation data comprises a plurality of continuously-changed test positions corresponding to the stimulation color block under different color contrast ratios, and the response data comprises a plurality of continuously-changed response positions corresponding to the test positions under each color contrast ratio; For each color contrast, determining a color vision action model comprising a plurality of position parameters according to the response data and the stimulation data under the color contrast; Estimating a plurality of position parameters based on Gibbs sampling technology, and determining a color vision noise estimated value under each color contrast; and performing reciprocal normalization and fitting on the color vision noise estimated value under each contrast, and determining the color vision estimated value of the subject, wherein the color vision estimated value is used for representing a color contrast threshold value of the subject between the perceivable and the imperceptible.
  2. 2. The method of claim 1, wherein the step of determining a color vision action model comprising a plurality of location parameters from the response data and the stimulus data at the color contrast comprises: determining action response delay through a cross correlation method according to a plurality of stimulation positions and a plurality of corresponding response positions under the color contrast; And constructing a color vision action model containing a plurality of position parameters based on the plurality of stimulation positions and the corresponding plurality of response positions under the color contrast and the action response delay.
  3. 3. The method of claim 2, wherein the step of constructing a color vision action model comprising a plurality of positional parameters based on the plurality of stimulus positions and the corresponding plurality of response positions and the action response delays at the color contrast comprises: Determining a color vision action model comprising a plurality of position parameters according to the following specification: r t ~ N(K t s t-Δt + (1- K t )r t-1 , K t Rs+Rm) ; Wherein r t represents the reaction position at the current test moment and obeys normal distribution N, s t-Δt represents the stimulation position at t-deltat moment, deltat represents action reaction delay, r t-1 represents the reaction position at the last test moment, and a plurality of position parameters comprise Rm, rs and K t , wherein Rm represents action reaction error, rs represents color vision noise of a subject, and K t represents Kalman gain value.
  4. 4. A method according to claim 3, wherein the determination of the specified formula is as follows: let the subject's reaction position r t at the current test time t follow a normal distribution, with: r t ~ N( t , RΣ t ) Wherein R Σ t = Re t +Rm Re t represents the position estimation error at the current test time, R sigma t represents the total error of the position estimation at the current test time, based on Kalman filtering model determination, t And Re t are both determined by the kalman gain value K t as follows: t = K t s t-Δt + (1- K t )r t-1 Re t = K t Rs And integrating the multiple formulas to obtain the specified formula.
  5. 5. The method of claim 1, wherein estimating a plurality of said location parameters based on Gibbs sampling techniques, determining a color vision noise estimate for each color contrast, comprises: And for each color contrast test time of the stimulus color block, performing posterior estimation on a plurality of position parameters by using a Gibbs sampling technology, generating an MCMC chain consisting of a plurality of posterior samples each time, and taking the average value of a later designated number of samples in the MCMC chain as a color vision noise estimated value under the color contrast.
  6. 6. The method of claim 5, wherein determining the subject's color vision estimate based on reciprocal normalization and fitting of the color vision noise estimate for each contrast, comprises: Determining a maximum value and a minimum value in the reciprocal of the color vision noise estimated value under a plurality of color contrasts; Calculating a normalized value of the inverse of the color vision noise estimate value for each color contrast according to the following equation: ; Wherein c represents the color contrast of the stimulus color patch, and ts max and ts min represent the maximum and minimum of the reciprocal of the color vision noise estimate under the plurality of color contrasts, respectively; Fitting is performed based on normalized values of the inverse of the color vision noise estimate at each contrast, and a color vision estimate for the subject is determined.
  7. 7. The method of claim 6, wherein the step of determining the subject's color vision assessment value is based on fitting a normalized value of the inverse of the color vision noise assessment value at each contrast, comprising: A color vision estimate C 50 for the subject is determined by fitting a normalized value of the inverse of the color vision noise estimate at each contrast by the following color contrast standard response function: ; where p, q are both unknown power parameters, and C 50 represents the color contrast threshold of the subject between observable and imperceptible.
  8. 8. A color vision test evaluation device is characterized in that the device is applied to a controller connected with a test drawing board, the test drawing board is used for presenting a stimulation color block with a specified size at a random position in each test time, a subject responds to the random continuous variation position of the stimulation color block, the stimulation color block is formed by two sub-color blocks in a crossing interval, the two sub-color blocks comprise red-green sub-color blocks or yellow Lan Zise blocks, and the device comprises: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring response data and corresponding stimulation data when a color vision test is carried out on a subject through a stimulation color block, the stimulation data comprise a plurality of continuously-changed test positions corresponding to the stimulation color block under different color contrast ratios, and the response data comprise response positions corresponding to the plurality of continuously-changed test positions under each color contrast ratio; the model construction module is used for determining a color vision action model containing a plurality of position parameters according to the response data and the stimulation data under the color contrast for each color contrast; The color vision noise estimation module is used for estimating a plurality of position parameters based on Gibbs sampling technology and determining a color vision noise estimation value under each color contrast; The evaluation value determining module is used for carrying out reciprocal standardization and fitting on the basis of the color vision noise estimated value under each contrast, and determining the color vision evaluation value of the subject, wherein the color vision evaluation value is used for representing the color contrast threshold value of the subject between the perceived and the unaware.
  9. 9. An electronic device comprising a processor and a memory, the memory storing computer-executable instructions executable by the processor, the processor executing the computer-executable instructions to implement the method of any one of claims 1 to 7.
  10. 10. A computer readable storage medium storing computer executable instructions which, when invoked and executed by a processor, cause the processor to implement the method of any one of claims 1 to 7.

Description

Color vision test evaluation method and device and electronic equipment Technical Field The present application relates to the field of color testing technologies, and in particular, to a color vision testing evaluation method and apparatus, and an electronic device. Background The traditional color test methods are of two types, including color vision function rapid screening test and psychophysical measurement. The rapid screening test mainly uses an equal-brightness disc as stimulus to require a subject to distinguish a specially formed graph, and the psychophysical rule adopts methods such as motion detection and the like to evaluate the distinguishing threshold limits of different color contrasts. For rapid screening tests, there are problems that (1) only relatively obvious color perception problems (such as achromatopsia) can be screened, different degrees of achromatopsia cannot be screened or a relatively slight color processing problem can be evaluated, (2) the test is not friendly to people with cognitive processing ability, and (3) the test can be passed through targeted training. For psychophysical methods, there are problems in that (1) the test is extremely lengthy and (2) the ability of the subject to process more colors than a threshold level cannot be assessed. Disclosure of Invention The application aims to provide a color vision test evaluation method, a device and electronic equipment, which can be used for effectively screening color vision disorder, can be used for independently evaluating two different color channels of red, green and yellow, can be used for treating cognitive dysfunction without semantic processing, can not pass test through memory or training, can realize quantitative evaluation color vision evaluation with efficiency far higher than that of the traditional method, and can realize differentiation of color weakness groups with different degrees. In a first aspect, the embodiment of the application provides a color vision test evaluation method, which is applied to a controller connected with a test drawing board, wherein the test drawing board is used for presenting a stimulus color block with a specified size on a random position in each test time, a subject can track and react to the random and continuous variation position of the stimulus color block, the stimulus color block is formed by two sub-color blocks at a crossing interval, the two sub-color blocks comprise red-green sub-color blocks or yellow Lan Zise blocks, the method comprises the steps of obtaining response data when a subject is subjected to color vision test through the stimulus color block and corresponding stimulus data, the stimulus data comprises a plurality of continuous variation test positions corresponding to the stimulus color block under different color contrasts, the response data comprises a response position corresponding to the continuous variation test positions under each color contrast, a color vision motion model containing a plurality of position parameters is determined according to the response data and the stimulus data under the color contrast, the color vision noise estimation value under each color contrast is determined based on the Gibbs sampling technology, the color vision noise estimation value under each color contrast is determined, and the color vision noise estimation value under each color contrast is used for representing the inverse vision contrast between the inverse vision evaluation value and a color estimation standard of the subject. In a preferred embodiment of the present application, the step of determining the color vision action model including a plurality of position parameters according to the response data and the stimulus data under the color contrast includes determining the action response delay according to a plurality of stimulus positions and a corresponding plurality of response positions under the color contrast by a cross correlation method, and constructing the color vision action model including a plurality of position parameters based on a plurality of stimulus positions and a corresponding plurality of response positions and action response delays under the color contrast. In a preferred embodiment of the present application, the step of constructing the color vision action model including the plurality of position parameters based on the plurality of stimulus positions and the corresponding plurality of response positions and action response delays under the color contrast includes determining the color vision action model including the plurality of position parameters according to the following specification: rt～N(Ktst-Δt+(1-Kt)rt-1,KtRs+Rm); Wherein r t represents the reaction position at the current test time and obeys normal distribution, s t-Δt represents the stimulation position at t-deltat time, deltat represents action reaction delay, r t-1 represents the reaction position at the last test time, and the plurality of position p