matlab 下经典的利用wavedec2,appcoef2,detcoef2对图像进行分解提取高低频系数完成图像压缩和重构的源程序.-matlab under the classic use of wavedec2, appcoef2, detcoef2 image decomposition extraction coefficient of the completion of the high-low frequency imag

该程序利用小波多尺度分解，提取近似系数和细节系数重构原图像-It uses wavelet decomposition to extract approximate coefficients and detail coefficients of the original image reconstruction