JPEG2000中一种EBCOT并行体系的研究 |
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作者姓名: | 高婷 吴成柯 王柯俨 郭杰 |
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作者单位: | 西安电子科技大学综合业务网理论与关键技术国家重点实验室; |
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基金项目: | 国家自然科学基金资助项目(60532060,60507012) |
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摘 要: | EBCOT是JPEG2000系统中占运算时间最多的一部分。为了提高JPEG2000的编码效率,文章提出了一种基于编码通道独立和条带独立的并行EBCOT编码体系。通过一次扫描,实现3个编码通道的并行编码,每个编码通道调用一组MQ编码器。同时,选择“条带一因果”模式消除条带间的关联性。这样,3个通道就可以并行编码而不互相干扰,大大提高了编码速度。每个编码通道结束时终止MQ编码器,错误不会传递到其他编码通道,增强了容错性。实验表明,此方法在保持JPEG2000优异性能的基础上,提高了JPEG2000的编码效率。
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关 键 词: | EBCOT MQ 并行编码 编码通道独立 条带独立 |
A Parallel Coder for EBCOT in JPEG 2000 |
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Authors: | Gao Ting Wu Chengke Wang Keyan Guo Jie |
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Institution: | Gao Ting Wu Chengke Wang Keyan Guo Jie |
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Abstract: | EBCOT costs most operation time in JPEG 2000 systems.To improve the efficiency of JPEG 2000,a new method based on pass-parallel and stripe-parallel is proposed here.This method realizes parallel code for three channels,one MQ-coder employed in each coding channel.The correlation of all channels is eliminated by stripe and Cause-effectmode,thus three channels can code in parallel without interfere each other and coding speed will accelerate also.Furthermore,MQ-coder is terminated on each coding pass,which st... |
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Keywords: | EBCOT MQ Parallel coder Pass-parallel Stripe-parallel |
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