Adaptive constrained least squares restoration for removal of blocking artifacts in low bit rate video coding

Author

Kaup, Andr?©

Author_Institution

Dept. ZT IK 2, Siemens AG, Munich, Germany

Volume

4

fYear

1997

Firstpage

2913

Abstract

For high compression ratios current video coding standards produce noticeable blocking and ringing noise due to a rigid block structure and coarse quantization. We propose a new method for reduction of these coding artifacts based on spatially adaptive constrained least squares restoration. The proposal is numerically simple and yields visually convincing results for intra as well as inter coded images. As a post-processing technique it is compatible to all existing image and video coding standards

Keywords

adaptive signal processing; code standards; data compression; image restoration; least squares approximations; quantisation (signal); telecommunication standards; video coding; DCT; adaptive constrained least squares restoration; block structure; blocking artifacts removal; coarse quantization; coding artifacts reduction; high compression ratios; intercoded images; intracoded images; low bit rate video coding; postprocessing technique; ringing noise; video coding standards; Bit rate; Decoding; Image coding; Image restoration; Least squares methods; Low pass filters; Noise shaping; Proposals; Quantization; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.595399

Filename

595399