Abstract

This thesis evaluated the color appearance predictions of four digital color transforms (Hunt, RLAB, CIELAB, and von Kries) between CRT "original" images, viewed in a lighted room, and projected slides, viewed in the dark. Calibrated projection of these images required resolution of several complex issues. Upon projection, the slide colors changed. A rapid color shift (on the order of 75 seconds) was followed by a slower, steady degradation which also had to be minimized for accurate image presentation. Therefore, a model of the film behavior was based upon dye absorptivities and color measurements of slides as they were projected. The psychophysical experiments included a comparison between preference choices and memory matching to the CRT "original." Two CRT white points were evaluated: D93 and D65. The preference choices were, in fact, distinct from the selected matches. RLAB produced statistically superior matches over any other model for both white points. Model performance was image dependent. Occasionally, CIELAB or von Kries images were equivalent to RLAB. However, CIELAB and von Kries predictions ranged widely in their performance. Hunt's image predictions consistently gave the worst results. Interestingly, RLAB was also elected as the most acceptable choice: judged 'acceptable' in more than 2/3 of all cases, with a maximum approval of 89%.

Library of Congress Subject Headings

Information display systems; Image processing--Digital techniques; Colorimetry; Color vision

Publication Date

8-1-1994

Document Type

Thesis

Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)

Advisor

Fairchild, Mark

Advisor/Committee Member

Berns, Roy

Comments

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: TK7882.I6L477 1994

Campus

RIT – Main Campus

Download

Share

COinS