一种基于三维小波嵌入编码的上下文模型

Context Model Based on 3D Wavelet Coefficients

受EZW、SPIHT、EBCOT模型及3D-EZW、3D-SPIHT、3D-ESCOT模型的启发,综合利用小波系数不同子带间的自相似性、偏序性和同子带内相邻系数的相关性,提出了一种三维小波嵌入编码的上下文模型(3D-OWNER).实验结果表明:利用这种模型获得的PSNR高于3D-ESCOT模型,同时也具有3D-ESCOT模型的优良性质.

Based on by typical coding schemes such as EZW, SPIHT, EBCOT, 3D-IEZW, 3D-SPIHT and 3D-ESCOT, a context model（3D-OWNER） of wavelet coefficients is proposed, which makes use of partial order, self-similarity between subbands of wavelet coefficients and the correlation of neighboring wavelet coefficients. Experimental results show that the model can achieve higher PSNR than 3D-ESCOT.