JPEG2000分析与体系结构设计

Liang-Gee Chen, Chung-Jr Lian, Kuanfu Chen, Hong-Hui Chen
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引用次数: 14

摘要

本文对JPEG2000中的关键模块进行了分析和体系结构设计。对于离散小波变换(DWT),提出了一种基于提升的DWT核心,用于JPEG2000第一部分中默认的5-3和9-7滤波器。DWT采用折叠架构,降低了硬件成本,实现了更高的硬件利用率。针对优化截断嵌入式块编码(EBCOT),提出了基于列的第1层块编码引擎编码架构。采用两种加速方法提高了上下文生成效率。将分组编码引擎的计算周期缩短到原来的40%左右。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis and architecture design of JPEG2000
Analysis and architecture design of the key modules in JPEG2000 are presented in this paper. For Discrete Wavelet Transform (DWT), a lifting based DWT core for the default 5-3 and 9-7 filters in part I of JPEG2000 is proposed. Folded architecture is adopted in DWT to reduce the hardware cost and to achieve the higher hardware utilization. For Embedded Block Coding with Optimized Truncation (EBCOT), column-based coding architecture of Tier-1 block coding engine is proposed. The context formation efficiency is increased by adopting two speedup methods. The computation cycle of the block coding engine is reduced to about 40% of previous work.
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