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Abstract
This article established a general theory of equating visibilities based on task contrast and contrast sensitivities. It quantifies the relationship between equivalent contrast of a task and its physical contrast, as well as the relationship between visual CRF (Contrast Rendition Factor) and physical CRF.
Additional information
Notes on contributors
P. Y. Ngai
Formerly, Research Engineer, Holophane, Division of Johns-Manville, Newark, Ohio; presently, Director of Research and Development, Peerless Electric Company, Berkeley, California.