Color vision variability test system

By designing a testing system that includes multiple test carriers and processing units, and utilizing spectral power distribution and general algorithms, the problem of existing technologies being unable to accurately reflect individual color vision variability is solved, achieving more accurate color matching and color vision defect identification, and is suitable for color assessment among individual observers.

CN113796822BActive Publication Date: 2026-07-10NATIFICO AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NATIFICO AG
Filing Date
2021-06-16
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing color vision testing systems cannot effectively account for variability among individual observers, resulting in inaccurate reflection of individual differences in color matching functions, which affects the accuracy and consistency of color management.

Method used

A testing system was designed, including at least two test carriers, each with multiple samples and a background. Through specific spectral power distribution and processing units, a general algorithm was used to predict color matching functions and identify color vision deficiencies. Considering the spectral characteristics of individual observers and lighting conditions, a color vision variability index was formed.

Benefits of technology

It can more accurately reflect the color vision variability among individual observers, improve the accuracy and consistency of color matching, and is suitable for identifying and predicting congenital and acquired color vision deficiencies, supporting the analysis of color assessment differences among individual observers.

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Abstract

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).
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