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A simplified algorithm of JPEG2000 rate control for VLSI implementation
Qin Xing; Yan Xiaolang; Ge Haitong; Yang Ye;
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
23-26 May 2005
Page(s):6316
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6319 Vol. 6
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.
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