| 基于整形小波变换的辐射图像无损压缩研究 |
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| 引用本文： | 袁亚玎,吴志芳,刘锡明,苗积臣. 基于整形小波变换的辐射图像无损压缩研究[J]. 核电子学与探测技术, 2004, 24(1): 41-44 |
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| 作者姓名： | 袁亚玎 吴志芳 刘锡明 苗积臣 |
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| 作者单位： | 清华大学核能技术设计研究院,北京,100084;清华大学核能技术设计研究院,北京,100084;清华大学核能技术设计研究院,北京,100084;清华大学核能技术设计研究院,北京,100084 |
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| 基金项目： | 国家"十五"重点攻关项目 |
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| 摘 要： | ^60Co集装箱CT系统的“物性鉴别”特性要求只能采用无损压缩方法处理辐射图像。由于辐射图像的灰度范围广和统计涨落大等特点,常规无损熵编码法难以取得理想效果。据此引入整形小波变换对辐射图像进行压缩处理,取得了优于传统熵编码的压缩效果。
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| 关 键 词： | 60Co集装箱CT系统 辐射图像 无损压缩 整形小波变换 |
| 文章编号： | 0258-0934(2004)01-0041-03 |
| 修稿时间： | 2002-11-05 |
Study on lossless compression of radiant images using integer wavelet transform |
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| YUAN Ya-ding,WU Zhi-fang,LIU Xi-ming,MIAO Ji-chen. Study on lossless compression of radiant images using integer wavelet transform[J]. Nuclear Electronics & Detection Technology, 2004, 24(1): 41-44 |
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| Authors: | YUAN Ya-ding WU Zhi-fang LIU Xi-ming MIAO Ji-chen |
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| Abstract: | In order to meet the request of "characteristics discrimination", it is necessary for the ~(60)Co container CT system to compress radiant images by lossless method. But because of the wide gray-scale range and high statistical noise of radiant images, it is difficult to obtain effective compression rate by traditional entropy encoder. In this article, a novel transform method, integer wavelet transform, is introduced and a compression scheme for radiant images is put forward. The experimental results prove that the scheme is proved to be better than the entropy encoder. |
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| Keywords: | ~(60)Co container CT radiant image lossless compression integer wavelet transform |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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