基于小波变换的图像压缩代码，包括压缩比、运行时间和计算复原图像的峰值信噪比-Image compression based on wavelet transform code, including compression ratio, operation time and recovery images of the peak signal to noise ratio calculation

灰度图像的jpeg压缩处理，解压处理，以及信噪比SNR的计算-Grayscale jpeg image compression, decompression, as well as the calculation of signal to noise ratio SNR

基于contourlet的图像压缩编码，其中包括计算PSNR值，压缩比和运行时间-Contourlet-based image compression coding, including the calculation of PSNR values, compression ratio and run-time