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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。
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.
方法：采用傅立叶变换红外光谱法获得红外原谱，再结合二维相关技术，分析何首乌药材红外特征。
Methods: Compared the characters of FTIR spectrums, two-dimensional spectrums of Radix Polygoni Multiflori from different sources.
本文将二维离散余弦变换(DCT)应用于多光谱图像与全色光学图像融合问题的研究中。
This paper applies 2-d DCT to the remote sensing image fusion between panchromatic and multi-spectral images.
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