| 霍夫曼编码和游程编码在图像编码中的应用 |
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| 引用本文： | 李薇,胡伟文,沈静.霍夫曼编码和游程编码在图像编码中的应用[J].舰船电子工程,2010,30(7):67-69. |
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| 作者姓名： | 李薇 胡伟文 沈静 |
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| 作者单位： | 海军工程大学理学院,武汉,430033 |
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| 基金项目： | 海军工程大学科学研究基金项目 |
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| 摘 要： | 传真图像的信息量非常大,对其进行数据压缩,不仅可以节省存储空间,而且可以有效地降低传输时间。针对传真图像压缩这一实际问题提出了一种实用编码,实用编码将霍夫曼编码与自适应游程编码有机结合,对于出现频率较大的游程长度,采用霍夫曼编码,出现频率较小且长度较长的游程,采用自适应游程编码,从而有效地缩短了码字,提高了编码效率。
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| 关 键 词： | 霍夫曼编码 游程编码 传真图像 压缩 编码效率 |
Application of the Huffman Code and the Run-length Code in Facsimile Chart Coding |
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| Li Wei,Hu Weiwen,Shen Jing.Application of the Huffman Code and the Run-length Code in Facsimile Chart Coding[J].Ship Electronic Engineering,2010,30(7):67-69. |
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| Authors: | Li Wei Hu Weiwen Shen Jing |
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| Institution: | Li Wei Hu Weiwen Shen Jing(College of Science,Naval Univ.of Engineering,Wuhan 430033) |
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| Abstract: | The quantity of information in a facsimile chart is huge.The data compression of charts can help us to save more storage space,and reduce the transmission time effectively as well.This paper mainly aims at the facsimile charts,putting forward a kind of actual compression coding based on the Huffman code and the Run-length code.The Huffman coding is adopted of the bigger frequency run length and the adaptive run length coding is adopted of the smaller frequency run length.The results show that the modified algorithm can efficiently reduce the length of code and improve the efficiency of coding. |
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| Keywords: | Huffman code run-length code facsimile chart compression efficiency of coding |
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