Lightness perception in high dynamic range images: local and remote luminance effects.

ABSTRACT: We measured the perceived lightness of target patches embedded in high dynamic range checkerboards. We independently varied the luminance of checks immediately surrounding the test and those remote from it. The data establish context transfer functions (CTFs) that characterize perceptual matches across checkerboard contexts. Several features of the CTFs are broadly consistent with previous research: Matched luminance decreases when overall context luminance decreases; matched luminance increases when overall context luminance increases; manipulating context locations near the target has a greater effect than manipulating locations far from the target patch. The measured CTFs are not well described, however, by changes with context in multiplicative gain alone or by changes in both multipli

SUBMITTER: Allred SR 

PROVIDER: S-EPMC3368252 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature