Block effect reduction with content-based AC prediction in an MPEG-2 compressed video

Author

Shin, Taehwan ; Cho, Kyungho ; Ahn, Byung-Ha

Author_Institution

Inst. of Sci. & Technol., Kwangju, South Korea

Volume

45

Issue

3

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

625

Lastpage

631

Abstract

This paper proposes a new block effect reduction technique based on the notion that the block effect is caused by loss of transform coefficients in the quantization process or during the transmission. The proposed algorithm is called content-based AC prediction for an MPEG-2 compressed video. In the proposed algorithm, the DC sequence is generated for considering the image content while AC coefficients are predicted. Then AC coefficients are predicted with respect to the image content. The simulation result shows that the proposed algorithm can be used in any DCT-based compressed video such as MPEG-1, MPEG-2, H.261, and H.263

Keywords

discrete cosine transforms; interference suppression; transform coding; video coding; AC coefficient; DC sequence; DCT-based compressed video; H.261; H.263; MPEG-1; MPEG-2; MPEG-2 compressed video; block effect reduction; content-based AC prediction; image content; quantization process; transform coefficients; transmission; Adaptive filters; DC generators; Discrete cosine transforms; Image coding; Low pass filters; Motion compensation; Noise reduction; Quantization; Transform coding; Video compression;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.793550

Filename

793550