| 图像压缩中一种改进的快速编码方法 |
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| 引用本文： | 刘丽娟,沈绪榜,邹雪城.图像压缩中一种改进的快速编码方法[J].华中科技大学学报(自然科学版),2003,31(7):10-12. |
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| 作者姓名： | 刘丽娟 沈绪榜 邹雪城 |
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| 作者单位： | 1. 华中科技大学图像识别与人工智能研究所
2. 华中科技大学电子科学与技术系 |
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| 摘 要： | 通过对基于平方欧几米德距离的剔除码字方法的分析研究，提出了一种改进的快速编码方法。该方法采用新的码字搜索方式，以一维矢量替代码字搜索过程中的码书缓存空间，加快了搜索速度，减少了编码过程中的内存占有量。仿真结果表明，经过改进后，存储量不变，编码时间明显减少了，同时保持了与全搜索一致的编码质量。
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| 关 键 词： | 图像压缩 矢量量化 快速编码 码字 |
| 文章编号： | 1671-4512(2003)07-0010-03 |
| 修稿时间： | 2002年12月17 |
A fast encoding algorithm for image compression |
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| Liu Lijuan,Shen Xubang,Zou Xuecheng.A fast encoding algorithm for image compression[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(7):10-12. |
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| Authors: | Liu Lijuan Shen Xubang Zou Xuecheng |
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| Institution: | Liu Lijuan Shen Xubang Zou Xuecheng |
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| Abstract: | By studying the fast encoding method introduced by Wu a nd Lin based on squared Euclidean distance to kick out impossible codewords, a n ew way of searching codewords was presented. The codebook space was replaced wit h a vector consisting of natural numbers to speed up encoding. The simulation re sults show that the improved algorithm meets the requirement for memory unchange d, but is faster significantly than the original algorithm, while maintaining th e same encoded quality as full search algorithm. |
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| Keywords: | image compression vector quantization fast encoding codewords Liu Lijuan Doctoral Candidate Institute of Image Recogn ition and Artificial Intelligence Huazhong Univ of Sci & Tech Wuhan 430074 China |
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