| 一种高效的抗误码能力强的图像编码方案 |
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| 引用本文： | 顾炜 胡波 等. 一种高效的抗误码能力强的图像编码方案[J]. 红外与毫米波学报, 2001, 20(3): 189-193 |
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| 作者姓名： | 顾炜 胡波 等 |
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| 作者单位： | 复旦大学电子工程系计算机辅助测试室, |
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| 基金项目： | 复旦大学科学技术青年基金 (编号 EX86 30 1)资助项目&& |
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| 摘 要： | 提出了一种新的图像编码方案。对子波变换后的系数进行变系数定长编码，由符号概率表生成字典，并用类似算术编码的方法进行符号串和字典中码字的映射，同时采用一系列的纠错方法以进一步提高方案的抗误码能力。模拟结果表明，该方案与其他方案相比，具有压缩比高，抗误码能力强等优点。
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| 关 键 词： | 子波变换 算术编码 抗误码能力 变系数定长编码 |
| 修稿时间： | 2000-10-24 |
AN EFFICIENT AND ROBUST SCHEME OF IMAGE-CODING |
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| GU Wei HU Bo LING Xie Ting ZHANG Li Ming. AN EFFICIENT AND ROBUST SCHEME OF IMAGE-CODING[J]. Journal of Infrared and Millimeter Waves, 2001, 20(3): 189-193 |
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| Authors: | GU Wei HU Bo LING Xie Ting ZHANG Li Ming |
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| Abstract: | A new wavelet based image coding scheme was proposed. The Variable Coefficient Fixed Length(VCFL) Coding method was used to code the wavelet subband coefficients of the image. The codebook was obtained from symbol probability. By a way similar to Atithmetic Coding, a bunch of symbols was mapped to the code in the codebook. Several error concealement methods were also adopted to improve the robustness. Simulation results show that our new scheme has higher compression ratio and robustness. |
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| Keywords: | variable coefficient fixed length(VCFL) coding wavelet transform arithmetic coding. |
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