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19 January 2009 HSV-based contrast stretching for color image enhancement
Mi Hye Kim, Ick Hoon Jang, Nam Chul Kim
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Proceedings Volume 7241, Color Imaging XIV: Displaying, Processing, Hardcopy, and Applications; 724113 (2009) https://doi.org/10.1117/12.805704
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States
Abstract
In this paper, we propose a contrast stretching which reflects the visibility of human visual system (HVS) as well as the histogram of a target image. In the proposed method, a target image is contrast-stretched by the auto gain/offset with visibility-based clipping, where the clipping thresholds are decided to maximize the averaged visibility of the contraststretched image. The visibility function is defined by a spatial JND (just noticeable difference), which is the threshold below which any change of a given pixel from its textured neighbors is not perceived by the HVS. Experimental results show that the proposed method efficiently stretch the contrast of target images to be more pleasing to the HVS than some conventional methods.
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Mi Hye Kim, Ick Hoon Jang, and Nam Chul Kim "HSV-based contrast stretching for color image enhancement", Proc. SPIE 7241, Color Imaging XIV: Displaying, Processing, Hardcopy, and Applications, 724113 (19 January 2009); https://doi.org/10.1117/12.805704
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KEYWORDS
Image enhancement
Visibility
Visual system
High dynamic range imaging
Digital imaging
Electronics engineering
Cameras
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