摘要
SP IHT算法是一种基于小波变换,压缩编码效率很高的静止图像压缩编码算法,传统的SP IHT算法主要基于软件实现。本文提出一种改进的更易于硬件实现的无列表SP IHT算法:采用状态标示符取代动态链表操作来记录集合分割信息,进而把整个编码过程都简化为简单的逻辑运算。基于本算法设计出了SP IHT编码器FPGA的有效实现。实验表明,该算法易于实现、节约资源、效率高、运算速度快,为硬件实现高速图像压缩编码提供了一种新的有效的方法。
The SPIHT algorithm based on the wavelet transform has the high performance on the still image compression. An improved listless SPIHT algorithm suitable for the hardware is presented. The algorithm uses the state mark instead of the list to record the information of the partition of sets, and then simplifies the process of the coding as the Boolean calculation. According to the algorithm, a SPIHT coder is designed based on FPGA. Experimental results show that this improved listless SPIHT algorithm is simple, thus saving the resource and increasing efficiency. The method is efficient for realizing the image compression with a high speed by the hardware.
出处
《数据采集与处理》
CSCD
北大核心
2005年第4期444-448,共5页
Journal of Data Acquisition and Processing
