针对遥感图像的数据特点，提出了结合双正交变换和SPIHT算法的遥感图像小波零树编码方案。

A new remote sensing image coding scheme based on the biorthogonal wavelet transform and SPIHT algorithm is proposed according to the statistical characteristic of remote sensing image data.

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另外我们采用多图像中心频谱平移和双随机位相编码提出了一种多图像加密算法。

Also we proposed a multiple image encryption scheme by shifting the multiple central parts of spectra together with the double random phase encodingtechnique.

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通过研究EBCOT编码原理和通道并行算法的编码过程，提出了双上下文窗口位并行的EBCOT系数位建模方法，详细说明了使用该算法的系数位建模系统的硬件结构。

After the detailed analysis of EBCOT algorithm and pass-parallel coding technique, a dual context window bit-parallel coding method and its architecture for hardware implementation are proposed.

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