DocumentCode :
1890526
Title :
A high pipeline and low memory design of JPEG2000 encoder
Author :
Mei, Kuizhi ; Zheng, Naming ; Liu, Yuehu
Author_Institution :
Inst. of Artificial Intelligence & Robotics, Xi´´an Jiaotong Univ., China
fYear :
2005
fDate :
14-16 June 2005
Firstpage :
315
Lastpage :
319
Abstract :
A high pipeline JPEG2000 encoder is implemented with low memory, dual buffers to save the wavelet coefficients and pre-rate allocation are used to reduce on-chip RAM. Pipeline and parallel architecture is used in discrete wavelet transform (DWT), bit-plane encoder (BPE) and arithmetic encoder (AE) to enhance coding speed, byte presentation of rate-distortion (RD) slope simplify searching the threshold value to truncate passes in post-coding rate distortion (PCRD) in Tier2. Packet formation, clock distribution and asynchronous interface are also presented. The encoder is verified on FPGA platform, performance is followed: the size of tile is up to 256 × 256 with code block in size of 32 × 32. Input sampling rate is up to 45M samples/s when Tier1 is working at the clock 100 MHz, difference of the PSNR of image compressed by the encoder and JASPER is less than O.5 db at the rate of 0.4 bit per sample (bps). Equivalent gates synthesized are about 109 K and on-chip RAM is 862 Kb.
Keywords :
arithmetic codes; data compression; discrete wavelet transforms; field programmable gate arrays; image coding; parallel architectures; pipeline arithmetic; random-access storage; 0.4 bit/s; 100 MHz; FPGA platform; JPEG2000 encoder; arithmetic encoder; asynchronous interface; bit-plane encoder; byte presentation; clock distribution; discrete wavelet transform; image coding; image compression; low memory design; packet formation; parallel architecture; pipeline design; post-coding rate distortion; prerate allocation; rate-distortion; wavelet coefficient; Arithmetic; Clocks; Discrete wavelet transforms; Field programmable gate arrays; Parallel architectures; Pipelines; Random access memory; Rate-distortion; Read-write memory; Wavelet coefficients;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Electronics, 2005. (ISCE 2005). Proceedings of the Ninth International Symposium on
Print_ISBN :
0-7803-8920-4
Type :
conf
DOI :
10.1109/ISCE.2005.1502394
Filename :
1502394
Link To Document :
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