由于每个描述都包含了奇数位系数和偶数位系数的部分或全部信息，因此，接收到一个信道的信息就可以重建出一定质量的图像。
Since each description included part or all information of the odd and even position coefficients, the reconstructed image from any single channel would have acceptable fidelity.
提出一种基于数位置乱的加密体制，该方案中首先采用置乱算法将明文信息的奇数位提取出来组成一个新的信息；
An encryption algorithm based on data-scrambling is presented. Firstly, we extract odd number bits of the important information to form a new information.
提出了一种基于形态膨胀运算的对子带间重要系数位置信息进行联合编码的新型小波图像压缩编码算法。
A new wavelet image compression algorithm was proposed based on morphological dilation and the positional information of the important coefficient couplet belt.
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