Frog and Haze Image Enhancement Using Improved Histogram Equalization Method in HIS Color Space

Dian Yuan Han

doi:10.4028/www.scientific.net/AMM.687-691.3671

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 687-691Frog and Haze Image Enhancement Using Improved...

Frog and Haze Image Enhancement Using Improved Histogram Equalization Method in HIS Color Space

Abstract:

This paper concerns the problem of frog and haze image enhancement. Images are often degreed due to the fog and haze condition. In this paper, an image enhancement method by using improved histogram equalization in HIS color space was put forward. Firstly, the image was transformed from RGB to HIS color space. Then the S and I components were treated with improved histogram equalization separately. When judging whether a gray level was to be merged with another, the weight coefficients with increased step were assigned to these low frequency gray levels according to their distance to the current gray level. Thus the excessive gray level merging was avoided. At the same time, a non-linear gray level mapping algorithm was proposed, which improved the contrast and brightness of the image. The experimental results show that our methods could keep the original colors and details of the image better, and they could improve the frog and haze image display effects significantly.

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Periodical:

Applied Mechanics and Materials (Volumes 687-691)

Pages:

3671-3674

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.687-691.3671

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Online since:

November 2014

Authors:

Dian Yuan Han

Keywords:

Frog, Haze Image, HIS Color Space, Histogram Equalization, Image Enhancement

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