Dynamic Color Grid Eye Tracking for Blindness Testing
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Solution Overview
Problem
Current methods for testing color blindness are prone to environmental distractions, lack versatility, and have poor rationality, leading to inaccurate results and potential misuse, particularly in fields like transportation and medical science.
Innovation Solution
A method and device that utilize preset coloring schemes with base and changing colors, acquiring and analyzing eye movement traces and brain wave signals to determine the type and severity of color blindness through fitting degrees and weighting operations, enhancing the accuracy and reliability of color blindness testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional color sense test tables are used, then the testing process is simple, but the results are inaccurate due to environmental distractions and potential memorization by tested persons
Solution Approach 1:
The patent applies dynamics by dynamically changing the color of grids one by one in sequence during the test, rather than displaying a static color sense test table. The color-changing sequence is controlled to track eye movement patterns, making the test adaptive and difficult to memorize while improving accuracy through quantitative analysis of eye tracking data
Solution Approach 2:
The system implements feedback by using eye tracking technology to monitor the tested person's eye movements in real-time and comparing the actual eye movement trace with the expected color point movement trace. The fitting degree calculation provides quantitative feedback to determine whether color blindness is present, creating a closed-loop testing system that adapts to the tested person's responses
2Adaptability or versatility
If static color display is used, then the testing method is easy to operate, but it lacks versatility and rationality due to different testing standards
Solution Approach 1:
The patent applies parameter changes by dynamically altering the color parameters of grids in sequence during the test. Each grid changes from a base color to a changing color according to a predetermined sequence, creating a standardized yet flexible testing protocol that can be implemented across different devices while maintaining consistency in the testing methodology
Solution Approach 2:
The system achieves universality by integrating multiple testing functions into a single platform: color display, eye tracking, data analysis, and result determination. The standardized color-changing sequence and fitting degree calculation method can be applied across different testing scenarios and devices, providing a universal solution for color blindness testing
Data Source
AI summary
Embodiments of the present invention disclose a method and a device of testing color blindness, which belong to the technical field of test. The method includes: acquiring a plurality of preset coloring schemes, each of which is provided to test one type of color blindness and comprises a base color and a changing color; acquiring color sense test patterns, each of which corresponding to one of the coloring schemes; changing a color of at least a part of the grids in one of color sense test patterns one by one from the base color to the changing color according to the grid color-changing sequence of the corresponding color sense test pattern during displaying the corresponding color sense test pattern, when the corresponding color sense test pattern is used to perform color blindness test on a tested person, and acquiring positions of the eyeballs of the tested person as the color of the grids is changing; obtaining a first fitting degree by fitting an acquired movement trace of the color point to a movement trace of the eyeballs; and, judging which type of color blindness of the tested person is according to the first fitting degree. According to the present invention, dependence analysis is performed on the movement trace of the eyeballs of the tested person and the movement trace of a color point in the corresponding color sense test pattern to obtain in quantitative sense which type of the color blindness of the tested person is, thereby increasing accuracy of the color blindness testing.