中文说明：主要用于图像经小波变换压缩图像，并计算压缩后的图像压缩性能即压缩比和信噪比
English Description：
It is mainly used to compress the image by wavelet transform, and calculate the compression performance of the compressed image, namely compression ratio and signal-to-noise ratio
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中文说明：主要用于图像经小波变换压缩图像，并计算压缩后的图像压缩性能即压缩比和信噪比
English Description：
It is mainly used to compress the image by wavelet transform, and calculate the compression performance of the compressed image, namely compression ratio and signal-to-noise ratio