Secondly,we compress image combined with deleting noise by wavelet zerotree algorithm. Lastly,several compessing methods based on wavelet zerotree idea are compared and summarized.
本文主要研究了小波零树编码在图像压缩及其去噪中的应用，提出了一些改进算法；最后对各种基于小波零树思想的压缩编码方法进行比较和总结。
参考来源 - 小波零树编码在图像压缩及其去噪中的应用研究On the research of fractal image coding, this paper presents an improved fractal coding algorithm on the basis of 9-7-tap integer wavelet zerotree.
对分形压缩编码进行了研究，提出了基于9-7整数小波零树的改进的分形算法。
参考来源 - 基于9·2,447,543篇论文数据，部分数据来源于NoteExpress
ZBP exploits the correlation among the Zerotree symbols and the bit data of wavelet coefficients, so the efficiency of arithmetic coding is improved.
ZBP不仅充分利用了零树符号之间的相关性，而且从位数据的层面上挖掘出了小波系数值之间的相关性，从而提高了算术编码的性能。
The experiment shows that the embedded zerotree coding method can be used in the case of nonseparable wavelet transform and has good PSNR at low compression ratio.
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。
Considering pixels of different levels have different significance, we utilize improved embedded zerotree wavelet (EZW) to get multilevel thresholds quantization.
根据不同等级像素重要性不同的特性，采用改进的嵌入零树小波编码方法对预测结果进行多阈值量化。
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