Adaptive spatial-temporal postprocessing for low-bit-rate coded image sequence

Li Yan

doi:10.1117/12.171058

23 March 1994 Adaptive spatial-temporal postprocessing for low-bit-rate coded image sequence

Li Yan

Proceedings Volume 2182, Image and Video Processing II; (1994) https://doi.org/10.1117/12.171058
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

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.

Citation Download Citation

Li Yan "Adaptive spatial-temporal postprocessing for low-bit-rate coded image sequence", Proc. SPIE 2182, Image and Video Processing II, (23 March 1994); https://doi.org/10.1117/12.171058

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