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Proceedings Paper

Adaptive spatial-temporal postprocessing for low-bit-rate coded image sequence
Author(s): Li Yan
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Paper Abstract

A 3D nonlinear postprocessing algorithm is proposed in this paper for reducing coding artifacts produced by block based motion compensated transform coding. In the proposed algorithm, a separable 3D filtering structure is used: a space-variant FIR-Median Hybrid filtering is used in spatial domain, followed by a motion compensated nonlinear filtering in temporal domain. By using this structure, the coding artifacts in the reconstructed image sequence can be effectively reduced without blurring edges or moving objects in the image sequence. The simulation results showed that significant improvement in the picture quality of low bit-rate coded video sequences can be obtained by using the proposed algorithm.

Paper Details

Date Published: 23 March 1994
PDF: 9 pages
Proc. SPIE 2182, Image and Video Processing II, (23 March 1994); doi: 10.1117/12.171058
Show Author Affiliations
Li Yan, AT&T Bell Labs. (United States)


Published in SPIE Proceedings Vol. 2182:
Image and Video Processing II
Sarah A. Rajala; Robert L. Stevenson, Editor(s)

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