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EURASIP Journal on Advances in Signal Processing

, 2006:042568

First Online: 11 May 2006Received: 08 October 2004Revised: 13 October 2005Accepted: 29 January 2006

Abstract

This work presents a parallel context-modeling coding architecture and a matching arithmetic coder MQ-coder for the embedded block coding EBCOT unit of the JPEG2000 encoder. Tier-1 of the EBCOT consumes most of the computation time in a JPEG2000 encoding system. The proposed parallel architecture can increase the throughput rate of the context modeling. To match the high throughput rate of the parallel context-modeling architecture, an efficient pipelined architecture for context-based adaptive arithmetic encoder is proposed. This encoder of JPEG2000 can work at 180 MHz to encode one symbol each cycle. Compared with the previous context-modeling architectures, our parallel architectures can improve the throughput rate up to 25%.

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Autor: Jen-Shiun Chiang - Chun-Hau Chang - Chang-Yo Hsieh - Chih-Hsien Hsia

Fuente: https://link.springer.com/



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