| 基于JPEG2000的DEM数据无损压缩 |
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| 引用本文： | 吴学文,孙延奎,唐龙. 基于JPEG2000的DEM数据无损压缩[J]. 计算机应用研究, 2004, 21(1): 240-242 |
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| 作者姓名： | 吴学文 孙延奎 唐龙 |
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| 作者单位： | 清华大学,计算机科学与技术系,北京,100084 |
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| 基金项目： | 国家自然科学基金重点资助项目(69833010) |
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| 摘 要： | 研究了小波技术在DEM数据无损压缩中的应用，采用JPEG2000标准对DEM数据进行无损压缩。实验结果表明，该方法与传统方法相比，不仅具有更高的压缩效率，而且具有更好的编码传输特性。
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| 关 键 词： | JPEG2000标准 数字高程模型 无损压缩 |
| 文章编号： | 1001-3695(2004)01-0240-03 |
| 修稿时间： | 2002-12-31 |
Lossless Compression of DEM Based on JPEG2000 |
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| WU Xue-wen,SUN Yan-kui,TANG Long. Lossless Compression of DEM Based on JPEG2000[J]. Application Research of Computers, 2004, 21(1): 240-242 |
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| Authors: | WU Xue-wen SUN Yan-kui TANG Long |
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| Abstract: | DEM(Digital Elevation Model) is a kind of terrain model which has comprehensive uses. Because of its large amount data, how to realize efficient lossless compression of DEM is a very important problem. This paper firstly analyses the characteristic of the data of DEM,then studies the application of wavelet in the lossless compression of DEM, gives an approach for data lossless compressing based on JPEG2000 standard. It also gives a group of experiment results, which proves that the approach possesses high compression ratio,and a good property of transmission. |
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| Keywords: | JPEG2000Standard DEM( Digital Elevation Model) Lossless Compression |
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