Measurement of the Lightness Contrast Sensitivity of Human Vision

YANG Sheng-wei, FANG En-yin, ZHENG Liang, XU Xiang-yang

Packaging Engineering ›› 2019 ›› Issue (19) : 251-256.

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PDF(5067 KB)
Packaging Engineering ›› 2019 ›› Issue (19) : 251-256. DOI: 10.19554/j.cnki.1001-3563.2019.19.037

Measurement of the Lightness Contrast Sensitivity of Human Vision

  • YANG Sheng-wei1, FANG En-yin1, ZHENG Liang1, XU Xiang-yang2
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Abstract

The work aims to study the antagonistic characteristics of human visual receptive field “center-surround”. Psychophysical experiments were designed to measure the contrast sensitivity data of 5 lightness samples on CIELAB lightness axis in visual perceptual color space at 11 spatial frequencies. The data collected from the experiments were an-alyzed by one-dimensional linear regression and principal component analysis, respectively. The functional relationship between different brightness vision, spatial frequency and contrast sensitivity threshold was compared. One-dimensional linear regression showed that, the contrast sensitivity curves of the five lightness samples showed band-pass characteristics, and the higher the lightness value, the more obvious the band-pass characteristics. Principal component analysis showed that, the former two principal components were new variables to describe the characteristics of human visual receptive field. The human vision shows a “center-surround” surrounding tone transfer characteristic at low frequencies of 1~6 cpd. At high frequencies, the brightness CSF of human eyes is similar to brightness CSF. As the spatial frequency increases, the contrast sensitivity of human vision decreases.

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YANG Sheng-wei, FANG En-yin, ZHENG Liang, XU Xiang-yang. Measurement of the Lightness Contrast Sensitivity of Human Vision[J]. Packaging Engineering. 2019(19): 251-256 https://doi.org/10.19554/j.cnki.1001-3563.2019.19.037
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