An investigation of the effect of image size on the color appearance of softcopy reproductions using a contrast matching technique

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Title: An investigation of the effect of image size on the color appearance of softcopy reproductions using a contrast matching technique
Author: Nezamabadi, Mahdi; Montag, Ethan; Berns, Roy
Abstract: Many art objects have a size much larger than their softcopy reproductions. In order to develop a multiscale model that accounts for the effect of image size on image appearance, a digital projector and LCD display were colorimetrically characterized and used in a contrast matching experiment. At three different sizes and three levels of contrast and luminance, a total of 63 images of noise patterns were rendered for both displays using three cosine log filters. Fourteen observers adjusted mean luminance level and contrast of images on the projector screen to match the images displayed on the LCD. The contrasts of the low frequency images on the screen were boosted while their mean luminance values were decreased relative to the smaller LCD images. Conversely, the contrast of projected high frequency images were reduced for the same images on LCD with a smaller size. The effect was more pronounced in the matching of projected image to the smaller images on the LCD display. Compared to the mean luminance level of the LCD images, a reduction of the mean luminance level of the adjusted images was observed for low frequency noise patterns. This decrease was more pronounced for smaller images with lower contrast and high mean luminance level.
Description: "An investigation of the effect of image size on the color appearance of softcopy reproductions using a contrast matching technique," Proceedings of Color Imaging XII: Processing, Hardcopy, and Applications, SPIE volume 6493. The International Society of Optical Engineers. Held in Rochester, New York: 7-12 May 2006. Copyright 2006 The Society of Photo-Optical Instrumentation Engineers. This paper is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/4324
Date: 2007-01-29

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