Effect of spatial frequency on equal-luminance point for the mechanism of shape from shading

Shoji Sunaga, Satoshi Shioiri, Hirohisa Yaguchi, Souichi Kubo

Research output: Contribution to journalArticle

Abstract

We examined 1) whether the perception of shape from shading is based on luminance or brightness by testing the additivity law, and 2) whether the spatial frequency contents in the stimulus affect on the spectral sensitivity. We measured the relative radiance at which shading disappeared in a simple shading figure. Results showed that 1) the additivity law holds for shading disappearance settings and that 2) the sensitivity for green to white decreased as higher spatial frequencies in the figure decreases. These results suggest that the perception of shape from shading is based on a luminance type additive mechanism and that the spectral sensitivity of the mechanism varies depending on spatial frequency.

Original languageEnglish
Pages (from-to)81-84
Number of pages4
JournalOptical Review
Volume2
Issue number1
DOIs
Publication statusPublished - Jan 1 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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