Image Sameness: Some Experiments on Contrast in Simple Scenes

William B. Cowan; Michael W. von Grünau

doi:10.1364/CA.1987.MB3

Topical Meeting on Color Appearance
Technical Digest Series (Optica Publishing Group, 1987),
paper MB3
•https://doi.org/10.1364/CA.1987.MB3

Image Sameness: Some Experiments on Contrast in Simple Scenes

William B. Cowan and Michael W. von Grünau

Color Appearance 1987

Annapolis, Maryland United States
29–30 June 1987
ISBN:

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Adaptation and Color Contrast (MB)

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W. B. Cowan and M. W. von Grünau, "Image Sameness: Some Experiments on Contrast in Simple Scenes," in Topical Meeting on Color Appearance, Technical Digest Series (Optica Publishing Group, 1987), paper MB3.

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Abstract

Our experiments show that observers perceive the absolute luminance of areas in an image under some viewing conditions, and average luminance and contrast under other conditions. When average luminance and contrast are important sensitivity to contrast mismatches is up to 25 times as great as sensitivity to luminance mismatches.

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