A fast efficient architecture for MPEG-4 zerotree encoder

Author

Xu, Chao ; Zhang, Yi-Zhen ; Fan, Xin ; Shi, Qing-Yun

Author_Institution

Nat. Lab. on Machine Perception, Peking Univ., Beijing, China

Volume

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

629

Abstract

This paper presents a novel architecture of MPEG-4 zerotree encoder. Under the architecture, a fast technique of label coefficients is proposed to reduce the recursive scan. It is achieved by exploiting the feature of the MPEG-4 zerotree symbol alphabet. A new combined structure of ZTR address buffer and the significant flag bit is described. It can simplify the skipping of the significant coefficients and locating the descendent coefficients of ZTR/VZTR. Furthermore, a preprocessor is given for independent encoding of each tree in individual bitplane.

Keywords

code standards; data compression; image coding; tree data structures; MPEG-4; VZTR; ZTR address buffer; independent encoding; individual bitplane tree; label coefficients; preprocessor; recursive scan reduction; significant coefficient skipping; significant flag bit; zerotree encoder architecture; zerotree symbol alphabet; Chaos; Computer architecture; Encoding; Energy consumption; Entropy coding; Laboratories; MPEG 4 Standard; Quantization; Scalability; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2002. ICME '02. Proceedings. 2002 IEEE International Conference on

Print_ISBN

0-7803-7304-9

Type

conf

DOI

10.1109/ICME.2002.1035860

Filename

1035860