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http://dx.doi.org/10.7840/kics.2013.38A.11.928

Contrast Enhancement Algorithm Using Singular Value Decomposition and Image Pyramid  

Ha, Changwoo (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Choi, Changryoul (한양대학교 융합IT기반 미래가치 창조 인재양성 사업단)
Jeong, Jechang (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Abstract
This paper presents a novel contrast enhancement method based on singular value decomposition and image pyramid. The proposed method consists mainly of four steps. The proposed algorithm firstly decomposes image into band-pass images, including basis image and detail images, to improve both the global contrast and the local detail. In the global contrast process, singular value decomposition is used for contrast enhancement; the local detail scheme uses weighting factors. In the final image composition process, the proposed algorithm combines color and luminance components in order to preserve the color consistency. Experimental results show that the proposed algorithm improves contrast performance and enhances detail compared to conventional methods.
Keywords
contrast/detail enhancement; singular value decomposition; image pyramid;
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Times Cited By KSCI : 3  (Citation Analysis)
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