Title :
A simplified model of delta-distortion for JPEG2000 rate control
Author :
Xing Qin ; Xiao-Lang Yan ; Xing Zhao ; Chongpong Yang ; Ye Yang
Author_Institution :
Inst. of VLSI Res., Zhejiang Univ., Hangzhou, China
Abstract :
Rate-distortion optimized rate control is one of the superior features of JPEG2000. The calculation of delta-distortion for each pass is the key to implementing rate control. The paper presents a simplified model of delta-distortion calculation. Compared with the one in the verification mode (VM) of the JPEG2000 standard, this model has the following merits: code-block memory access free; lower memory requirement; lower computational complexity; less negative impact on image quality.
Keywords :
data compression; distortion; image coding; optimisation; rate distortion theory; JPEG2000; code-block memory; computational complexity; delta-distortion; image quality; memory requirement; rate-distortion optimized rate control; verification mode; Code standards; Communication channels; Communication system control; Costs; Image generation; Image quality; Optimal control; Rate-distortion; Table lookup; Virtual manufacturing;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346189
