| 一种改进的游程编码算法 |
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| 引用本文： | 祝本明,刘桂华.一种改进的游程编码算法[J].西南科技大学学报,2007,22(3):75-78. |
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| 作者姓名： | 祝本明 刘桂华 |
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| 作者单位： | 西南科技大学信息工程学院,四川绵阳,621010 |
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| 基金项目： | 国家自然基金项目(No:60371017)，四川省教育厅青年基金项目(No:2005B033) |
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| 摘 要： | 提出了一种基于小波和数学形态学的自适应游程编码的改进算法。图像小波分解,经数学形态学膨胀处理后,位平面将出现大量极长的连"0",利用游程编码可有效压缩数据量。最为理想的游程编码的字长应当等于游程的实际长度对应的二进制数的比特总数。改进的自适应游程编码算法突出的特点是它可以将原始比特流转换成码长的二进制编码。实验结果表明,当连续码流相等的情况下,改进的算法可以有效减少编码长度。
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| 关 键 词： | 小波变换 数学形态学 游程编码 位平面 |
| 文章编号： | 1671-8755（2007）03-0075-04 |
| 修稿时间： | 2007-05-15 |
A Modified Run Length Encoding Algorithm |
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| ZHU Ben-ming,LIU Gui-hua.A Modified Run Length Encoding Algorithm[J].Journal of Southwest University of Science and Technology,2007,22(3):75-78. |
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| Authors: | ZHU Ben-ming LIU Gui-hua |
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| Institution: | School of Information Engineering, Southwest University of Science and Technology Mianyang, Sichuan, 621010, China |
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| Abstract: | A modified adaptive run length encoding algorithm was proposed based on a wavelet transform with mathematical morphology.By utilizing morphological dilation,a mass of long series "0" code stream appearing in the bit-plane,adaptive run length encoding algorithm can encode images efficiently.The codeword of the optimal RLC should be equal to the actual length of run length that is corresponding to the total bits of binary code.A salient new feature of the modified adaptive run length encoding algorithm is that the original bit-steam is transformed into the original code length binary encode.Experimental results show that the modified algorithm can efficiently reduce the length of code when the series code streams have the same length. |
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| Keywords: | wavelet transform mathematical morphology adaptive run length encoding bit-plane |
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