title: [Measuring the contrast resolution limits of human vision based on the modern digital image processing].
abstract: In the literatures on the human vision physiology and physics, there were reports about space resolution limit of 1' visual angle, frequency resolution limit of 5 nm and time resolution limit of 0.1" of human vision. However, there has been no report about the contrast resolution limit of human vision,especially the report of measuring method and result about the contrast resolution limit of human vision based on the modern digital image processing. Here we report a modern method for measuring the contrast resolution limit of human vision based on computer digital image processing technology, and we present the measured results and their mathematical models. The function relationships of contrast resolution limit varying with background gray in a photopic or a scotopic sights were illuminated respectively. It can be expected that such investigations with regard to human vision will establish the physiological foundation of the theories and techniques in hiding bodies and hiding figures (stealth), in anti-hiding bodies and anti-hiding figures, in the night vision system independent of infrared, as well as in their relative industries.
authors.affiliation: Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China.
authors.forename: Zhifang
authors.initials: Z
authors.lastname: Wang
authors.forename: Yuhong
authors.initials: Y
authors.lastname: Liu
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Zhangyong
authors.initials: Z
authors.lastname: Li
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Zhao
authors.forename: Zhengxiang
authors.initials: Z
authors.lastname: Xie
mesh_terms: D000465:Algorithms; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008297:Male; D008962:Models, Theoretical; D014785:Vision, Ocular / Q000502:physiology*; D055815:Young Adult