A simplified algorithm of JPEG2000 rate control for VLSI implementation

Author

Xing, Qin ; Xiaolang, Yan ; Haitong, Ge ; Ye, Yang

Author_Institution

Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China

fYear

2005

fDate

23-26 May 2005

Firstpage

6316

Abstract

It is an effective speedup technology in JPEG2000 VLSI implementation to integrate the rate control with tier-1 encoding. For VLSI implementation, a simplified rate-distortion optimization rate control algorithm is proposed. The algorithm includes component bit allocation based on weights, a simplified delta-distortion estimation model, and two-table optimal slope threshold generation. Compared with the existing one, the algorithm has some merits: it is code-block memory access free, has less memory requirement and lower computation complexity, with about 0.3dB decrease of image quality.

Keywords

VLSI; code standards; image coding; optimisation; rate distortion theory; JPEG2000 rate control; VLSI implementation; code-block memory access; component bit allocation; computation complexity; delta-distortion estimation model; memory requirement; rate-distortion optimization; speedup technology; tier-1 encoding; two-table optimal slope threshold generation; Arithmetic; Bit rate; Context modeling; Image coding; Image quality; Partitioning algorithms; Rate distortion theory; Rate-distortion; Transform coding; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1466085

Filename

1466085