2010/10/01 by K.D. STROYAN, Keith Stroyan, Stroyan, Keith
Biochemistry, Genetics and Molecular Biology · Mathematics · Neuroscience · Physics and Astronomy · Psychology · #Biological Physics (physics.bio-ph) #Color perception and design #FOS: Biological sciences #FOS: Physical sciences #Morphological variations and asymmetry #Other Quantitative Biology (q-bio.OT) #Visual perception and processing mechanisms #physics.bio-ph #q-bio.OT
paper · pdf · doi:10.48550/arxiv.1010.0575
11 pages, 5 figures
arxiv created 2010/10/01 · openalex publication_date 2010/10/01 · arxiv updated 2010/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Researchers especially beginning with (Rogers & Graham, 1982) have noticed important psychophysical and experimental similarities between the neurologically different motion parallax and stereopsis cues. Their quantitative analysis relied primarily on the "disparity equivalence" approximation. In this article we show that retinal motion from lateral translation satisfies a strong ("asymptotic") approximation to binocular disparity. This precise mathematical similarity is also practical in the sense that it applies at normal viewing distances. The approximation is an extension to peripheral vision of (Cormac & Fox's 1985) well-known non-trig central vision approximation for binocular disparity. We hope our simple algebraic formula will be useful in analyzing experiments outside central vision where less precise approximations have led to a number of quantitative errors in the vision literature.