Description
A large-scale psychophysical experiment was performed examining the effects of various simultaneous variations of image parameters on perceived image sharpness. The goal of this experiment was to unlock some of the rules of image sharpness perception. A paired comparison paradigm was used to compare images of different resolution, contrast, noise, and sharpening. In total, 50 people performed over 140,000 observations. The results indicate that there are several very interesting tradeoffs between the various parameters of contrast, noise, resolution, and spatial sharpening. An interval scale of image sharpness was created. This scale was then used to test the results of several existing models of color and spatial vision. The ultimate goal of this experiment, along with the visual modeling is to obtain a mathematical model of perceived image quality.
Date of creation, presentation, or exhibit
2000
Document Type
Conference Paper
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Recommended Citation
Johnson, Garrett and Fairchild, Mark, "Sharpness rules" (2000). Accessed from
https://repository.rit.edu/other/389
Campus
RIT – Main Campus
Comments
IS&T: Eighth Color Imaging Conference: Color Science and Engineering Systems, Technologies, Applications 8 (2000) 24-30 Location: Scottsdale, Arizona - Publisher book can be found here: http://www.imaging.org/store/physpub.cfm?seriesid=4&pubid=243 ISBN: 0-89208-231-3Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.