Two psychophysical techniques, the method of constant stimuli and the gray-scale comparison method, were used to determine color tolerances for three different color centers in the hue, chroma, and lightness directions in CIELAB color space. The same color-difference pairs were used as the stimuli in both experiments. Although the results followed the same trends, they were different for the two techniques. Based on comparison of the validity and precision of the results, as well as the ease of implementation, use, and analysis, the method of constant stimuli is the preferable method.

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Also presented at the ISCC Annual Meeting, held in Chicago, Illinois, 2003. Copyright © 2003 by The Association for Research in Vision and Ophthalmology. All Rights Reserved. With the exception of material authored by government employees working in an official capacity, copyright for all material published in Journal of Vision is assigned to the Association for Research in Vision and Ophthalmology (ARVO). Users may view, reproduce or store copies of articles comprising the journal provided that the articles are used only for their personal, non-commercial use. Uses beyond that allowed by the "Fair Use" limitations (sections 107 and 108) of the U.S. Copyright law require permission which must be obtained in writing from the Journal of Vision Editorial Office (see contact information below). Any uses and or copies of Journal of Vision articles, either in whole or in part, must include the customary bibliographic citation, including author attribution, date, article title, journal name, DOI and/or URL, and copyright notice. ISSN:1534-7362 Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

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Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)


RIT – Main Campus