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Optimal Design of the 3D SPIHT Algorithm Suitable for Hardware Implementation
Author(s): 
Pages: 125-129
Year: Issue:  2
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  3D离散小波变换3D多分等级树位图映射方式线性地址子代最大值;
Abstract: 通过对一种可精确控制压缩率的三维多分等级树(3D SPIHT)编码算法的分析,为提高编码速度,改进了3D SPIHT的算法结构,简化了动态分配内存的链表结构,采用位图映射的方式固定分配内存,可减少内存86.6%,无需进行硬件难以实现的链表操作. 变三维地址为线性地址,并在预处理时建立子代最大值映射表,减少了零树判断的时间. 实验结果证明,与原算法相比,当压缩比小于26.7时,优化后算法的速度提高了10倍以上,为进一步的VLSI设计奠定了基础.
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