Achieving optimal rate-distortion performance in arbitrarily-shaped transform coding

Author

Shen, Guobin ; Zeng, Bing ; Liou, Ming L.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong

Volume

2

fYear

2000

fDate

2000

Firstpage

1

Abstract

In this paper, we present a simple but effective method to enhance the coding performance of shape-adaptive DCT (SA-DCT). By choosing the first processing direction (between horizontal and vertical) within each boundary block for doing the 1D transform, the proposed method guarantees to achieve optimal rate-distortion results and actually outperforms the existing SA-DCT algorithms significantly. The proposed method is also applicable to arbitrarily-shaped coding based on some padding techniques

Keywords

discrete cosine transforms; rate distortion theory; transform coding; video coding; 1D transform; arbitrarily-shaped transform coding; boundary block; coding performance; optimal rate-distortion performance; padding techniques; processing direction; shape-adaptive DCT; Approximation algorithms; Bit rate; Computational complexity; Councils; Discrete cosine transforms; MPEG 4 Standard; Rate-distortion; Telecommunication computing; Transform coding; Virtual manufacturing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.856244

Filename

856244