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Proceedings Paper

Measurements of lightness: dependence on the position of a white in the field of view
Author(s): John J. McCann; Robert Savoy
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Paper Abstract

We used quantitative lightness matching to measure changes in achromatic lightness as a function of the separation between a bright White (1000 mL) and a nearby 3 or a 300 mL Test Field. The experiments varied size, angular subtend and separation of the White area. All variables showed some influence on the matching lightness to the Test Field. Of particular interest are substantial changes in lightness from White areas that have 7.5 degrees separation. This paper will describe the quantitative results and their implications for models of lightness.

Paper Details

Date Published: 1 June 1991
PDF: 10 pages
Proc. SPIE 1453, Human Vision, Visual Processing, and Digital Display II, (1 June 1991); doi: 10.1117/12.44373
Show Author Affiliations
John J. McCann, Polaroid Corp. (United States)
Robert Savoy, Rowland Institute for Science (United States)

Published in SPIE Proceedings Vol. 1453:
Human Vision, Visual Processing, and Digital Display II
Bernice E. Rogowitz; Michael H. Brill; Jan P. Allebach, Editor(s)

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