Algorithm for JPEG2000 rate control based on number of coding passes

Author

Zhang, Facun ; Wang, Qiankun ; Duan, Jinghong

Author_Institution

Sch. of Comput. Sci. & Eng., Xi´´an Univ. of Technol., Xi´´an, China

fYear

2011

fDate

26-28 July 2011

Firstpage

137

Lastpage

140

Abstract

Post-compression rate-distortion optimization (PCRD-opt) algorithm in JPEG2000 needs to calculate rate-distortion slope of every truncation point, and increases the cost of computation and storage as well. A new algorithm is proposed for JPEG2000 rate control, which truncates the code stream by the number of coding passes and needn´t to calculate rate distortion slope. Compared with the standard post-compression rate-distortion optimization algorithm, experimental results show that the proposed algorithm reduces the total encoding time with negligible loss in power signal-to-noise ratio (PSNR).

Keywords

data compression; image coding; optimisation; rate distortion theory; JPEG2000 rate control algorithm; PCRD-opt algorithm; PSNR; code stream truncation; coding pass number; post-compression rate-distortion optimization algorithm; power signal-to-noise ratio; rate-distortion slope calculation; truncation point; Algorithm design and analysis; Bit rate; Encoding; Image coding; Image quality; Rate-distortion; Transform coding; Coding Pass; JPEG2000; Rate Control; Rate-distortion Slope;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6001816

Filename

6001816