期刊
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
卷 54, 期 3, 页码 1389-1397出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCE.2008.4637632
关键词
histogram equalization; contrast enhancement; brightness preservation; histogram weighting
资金
- Seoul Women's University (2008)
This paper proposes a new histogram equalization method, called RSWHE (Recursively Separated and Weighted Histogram Equalization), for brightness preservation and image contrast enhancement. The essential idea of RSWHE is to segment an input histogram into two or more sub-histograms recursively, to modify the sub-histograms by means of a weighting process based on a normalized power law, function, and to perform histogram equalization 017 the weighted sub-histograms independently. RSIHE (Recursive Sub-Image Histogram Equalization) and RMSHE (Recursive Mean Separate Histogram Equalization) are some methods similar to RSWHE, but they do not carry out the above weighting process. We show that compared to other existent methods, RSWHE preserves the image brightness more accurately and produces images with better contrast enhancement(1).
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