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A new approach for restoring block-transform coded images with estimation of correlation matrices

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3 Author(s)
Choy, S.S.O. ; Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong ; Yuk-Hee Chan ; Wan-Chi Siu,

This paper presents a new restoration approach to reduce coding artifacts in block-transform image coding. Different from conventional restoration techniques, the proposed one is non-iterative and requires a low computational cost, yet can reconstruct objectively and subjectively better images. This good performance is achieved because of the following advantages the proposed approach has: (i) efficient incorporation of the solution bound into restoration; and (ii) effective exploitation of local image properties and statistical knowledge about the quantizers used

Published in:

Image Processing, 1997. Proceedings., International Conference on  (Volume:2 )

Date of Conference:

26-29 Oct 1997