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Journal of Electronic Imaging

Gradient approach to quantify the gradation smoothness for output media
Author(s): Youn Jin Kim; Yousun Bang; Heui-Keun Choh
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Paper Abstract

We aim to quantify the perception of color gradation smoothness using objectively measurable properties. We propose a model to compute the smoothness of hardcopy color-to-color gradations. It is a gradient-based method that can be determined as a function of the 95th percentile of second derivative for the tone-jump estimator and the fifth percentile of first derivative for the tone-clipping estimator. Performance of the model and a previously suggested method were psychophysically appreciated, and their prediction accuracies were compared to each other. Our model showed a stronger Pearson correlation to the corresponding visual data, and the magnitude of the Pearson correlation reached up to 0.87. Its statistical significance was verified through analysis of variance. Color variations of the representative memory colors-blue sky, green grass and Caucasian skin-were rendered as gradational scales and utilized as the test stimuli.

Paper Details

Date Published: 1 January 2010
PDF: 9 pages
J. Electron. Imag. 19(1) 011012 doi: 10.1117/1.3271139
Published in: Journal of Electronic Imaging Volume 19, Issue 1
Show Author Affiliations
Youn Jin Kim, Samsung Electronics Co., Ltd. (Korea, Republic of)
Yousun Bang, Samsung Electronics Co., Ltd. (Korea, Republic of)
Heui-Keun Choh, Samsung Electronics Co., Ltd. (Korea, Republic of)

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