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Proceedings Paper

Content-dependent contrast enhancement for displays based on cumulative distribution function
Author(s): Seul Ki Jang; Yoon-Gyoo Lee; Gyoung-Soo Park; Choon-Woo Kim
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Paper Abstract

Perceived contrast is one of the most important attributes affecting image quality on displays. Three dimensional digital TVs need contrast enhancement techniques to compensate for reduction in luminance levels. Also, mobile displays demand efficient contrast enhancement techniques to improve degree of visibility under outdoor viewing environment and reduce power consumptions. This paper presents a new content dependent contrast enhancement technique to improve perceived image quality on displays. It is designed for real time implementation. Pairs of reference cumulative distribution functions (CDF) of luminance level and corresponding tone mapping functions (TMFs) are generated by off-line procedure. For real time implementation, an appropriate TMF is selected by comparing the CDF of input image and reference CDFs. The selected TMF is then applied to an input image.

Paper Details

Date Published: 4 February 2013
PDF: 7 pages
Proc. SPIE 8652, Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications, 86520Y (4 February 2013); doi: 10.1117/12.2007236
Show Author Affiliations
Seul Ki Jang, Samsung Electronics (Korea, Republic of)
Yoon-Gyoo Lee, Inha Univ. (Korea, Republic of)
Gyoung-Soo Park, Inha Univ. (Korea, Republic of)
Choon-Woo Kim, Inha Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8652:
Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)

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