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Enhancement of Color Images by Scaling the DCT Coefficients

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2 Author(s)
Mukherjee, J. ; Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Kharagpur ; Mitra, S.K.

This paper presents a new technique for color enhancement in the compressed domain. The proposed technique is simple but more effective than some of the existing techniques reported earlier. The novelty lies in this case in its treatment of the chromatic components, while previous techniques treated only the luminance component. The results of all previous techniques along with that of the proposed one are compared with respect to those obtained by applying a spatial domain color enhancement technique that appears to provide very good enhancement. The proposed technique, computationally more efficient than the spatial domain based method, is found to provide better enhancement compared to other compressed domain based approaches.

Published in:

Image Processing, IEEE Transactions on  (Volume:17 ,  Issue: 10 )

Date of Publication:

Oct. 2008

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