sofm arithmetic methodology, lbg arithmetic methodology, dpcm encoding step by step, wavelet zero tree compression etc, are common methods applied in the encoding of image at present 本文主要探讨了sofm算法、lbg算法、dpcm分步编码、小波零树压缩等较为多见的几种图像编码方法。
my principal work is these : transforming image in wavelet at first, then encoding wavelet coefficients in sofm arithmetic methodology, lbg arithmetic methodology, dpcm encoding step by step, wavelet zero tree compression separately, reconstructing the image at last, so researching how to improve compression ratio, hi addition, the article puts forward a new arithmetic methodology, sl arithmetic methodology, on the base of comparing sofm arithmetic methodology with lbg arithmetic methodology what it needs emphasis is the variety of reconstructed image because of the diversity of mother wavelet 本人所做的工作主要围绕着这样的步骤:将图像数据先进行小波变换,然后分别应用sofm算法、lbg算法、dpcm分步编码、小波零树压缩等对图像小波系数进行编码,最后重构图像。akqnk44wa从而研究如何能够提高图像压缩比,并比较了各算法在图像压缩中的特点。另外,根据sofm算法、lbg算法在图像压缩中的各自特点,提出了一种新的算祛一七l算法。