论文部分内容阅读
本文讨论利用二维非分离型滤波器组的嵌入式零树子波（ＥｍｂｅｄｄｅｄＷａｖｅｌｅｔＺｅｒｏｔｒｅｅ，简称ＥＷＺ）图象编码。文中讨论了二维非分离型滤波器组完全重构的充要条件，还讨论了子带图象的分割和五点式抽样的问题。实验表明嵌入式零材编码方法可以用在非分离型二维子波变换情况，在低比特率时有很好的巅值信噪比ＰＳＮＲ。
This paper discusses EmbeddedWaveletZerotree (EWZ) image coding using two-dimensional non-separable filter banks. In this paper, the sufficient and necessary conditions for complete reconstruction of two-dimensional non-separable filter banks are discussed. The sub-band image segmentation and five-point sampling are also discussed. Experiments show that the embedded zero material coding method can be used in non-separable two-dimensional wavelet transform case, at a low bit rate has a good peak signal to noise ratio PSNR.