| 基于3维SPIHT编码的超光谱图像压缩 |
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| 引用本文： | 马晨光,郭雷.基于3维SPIHT编码的超光谱图像压缩[J].量子电子学报,2005,22(5):680-684. |
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| 作者姓名： | 马晨光 郭雷 |
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| 作者单位： | 西北工业大学自动化学院,陕西,西安,710072 |
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| 摘 要： | 提出一种针对超光谱图像压缩的3维SPIHT编码算法.通过对超光谱图像进行3维小波变换,同时去除像素数据间的空间冗余和谱间冗余.针对变换后得到的小波系数,构造一种3维空间方向树结构,并用经3维扩展后的SPIHT算法(3D SPIHT算法)对小波系数进行量化编码.实验证明,基于3维小波变换的3维SPIHT编码算法在对超光谱图像压缩时,表现出了优良的率失真性能.并且算法复杂度适中,具有嵌入式特性.
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| 关 键 词： | 图像处理 超光谱图像压缩 3维小波变换 3维SPIHT |
| 文章编号： | 1007-5461（2005）05-0680-05 |
| 收稿时间： | 2004-09-01 |
| 修稿时间： | 2004-11-25 |
Hyperspectral image compression based on 3D SPIHT coding algorithm |
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| MA Chen-guang,GUO Lei.Hyperspectral image compression based on 3D SPIHT coding algorithm[J].Chinese Journal of Quantum Electronics,2005,22(5):680-684. |
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| Authors: | MA Chen-guang GUO Lei |
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| Abstract: | A 3D SPIHT algorithm is proposed to deal with the compression of hyperspectral images. In order to eliminate the intraband and interband dependencies, 3D discrete wavelet transform is used to decorrelate the hyperspectral images. After transform, Said and Pearl man's SPIHT algorithm is used to code the wavelet coefficients. The spatial orientation trees of the wavelet coefficients are three-dimensional, so a 3D SPIHT algorithm is constructed to suitably compress the hyperspectral images. The test results show that the 3D SPIHT algorithm based on 3D DWT for hyperspectral images compression is very efficient, the algorithm is embedded and has modest complexity. |
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| Keywords: | image processing hyperspectral images compression 3D wavelet transform 3D SPIHT |
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