中文说明：对图像进行二维小波变换，将变换结果与原有的jpg格式压缩文件进行比较，当系数值大于原有系数的平均值是，得出压缩比率小于原有的压缩率，通过调节参数判断图像的压缩状态。
English Description：
A 2-D wavelet transform to the image, to transform the results with the original compressed JPG format file for comparison, when the coefficient is greater than the original coefficient average compression ratio, compression rate obtained is less than the original judgment, the image compression state by adjusting the parameters.