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Contrast enhancement on color images using iterative histogram rearrangement

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4 Author(s)
Ping-Hsien Lin ; Dept. of Electrical Engineering, National Taiwan University, Taipei, Taiwan 106, R.O.C. ; Chih-Tsung Shen ; Chun-Cheng Lin ; Hsu-Chun Yen

This paper proposes a novel method which contributes in remarkable contrast enhancement with luminance characteristics not differing too much. Our method involves two main stages on the luminance plane of color images: iterative sub-histogram equalization (ISHE) and histogram tuning, in which the former generates a high-contrasting image as well as preserving brightness to some level, and the latter fine-tunes the histogram to improve the variation of pixel values. The overall procedure helps to enhance better contrasts than any other similar brightness-preserving enhancing techniques. Moreover, the computational efficiency is well acceptable over execution on realistic consumer electronics.

Published in:

2009 IEEE 13th International Symposium on Consumer Electronics

Date of Conference:

25-28 May 2009