This algorithm decomposes and reconstructs a digital image using multi - resolution ratio of wavelet transform , analyzes the design method of compactly supported orthogonal filter , and realizes the image decomposition and reconstruction based on orthogonal wavelet 本算法利用小波變換的多分辨率特性來(lái)進(jìn)行圖像的小波域分解和重構(gòu),分析了具有緊支集的正交小波變換濾波器的設(shè)計(jì)原理,實(shí)現(xiàn)了基于正交小波的圖像分解與重構(gòu)。