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- W2022800261 abstract "A simple power-logarithm histogram modification operator is proposed to enhance digital image contrast. First a logarithm operator reduces the effect of spikes and transforms the image histogram into a smoothed one that approximates a uniform histogram while retaining the relative size ordering of the original bins. Then a power operator transforms this smoothed histogram into one that approximates the original input histogram. Contrast enhancement is then achieved by using the cumulative distribution function of the resulting histogram in a standard lookup table based histogram equalization procedure. The method is computationally efficient, independent of image content, and (unlike most existing contrast enhancement algorithms) does not suffer from the occurrence of artifacts, over-enhancement and unnatural effects in the processed images. Experimental results on a wide range of different images show that the proposed method effectively enhances image contrast while preserving overall image brightness, and yields results that are comparable or even of higher quality than those provided by previous state-of-the-art methods." @default.
- W2022800261 created "2016-06-24" @default.
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- W2022800261 date "2014-10-07" @default.
- W2022800261 modified "2023-09-23" @default.
- W2022800261 title "Efficient contrast enhancement through log-power histogram modification" @default.
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- W2022800261 doi "https://doi.org/10.1117/12.2064971" @default.
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