一种可重构的离散和连续小波变换结构

A Reconfigurable Architecture for Discrete and Continuous Wavelet Transforms

提出了一种基于提升算法的连续和离散统一的小波变换算法,给出可重构的计算结构,包括可重构的提升节点阵列和地址发生器.为了验证该结构的正确性,在现场可编程门阵列平台上测试了离散的二维5/3和9/7变换(JPEG2000标准中采用)及连续的二维Harr变换,结果证明该设计具有普遍的兼容性.

In this paper, a unified computation framework of discrete and continuous wavelet transform based on lifting scheme and a reconfigurable architecture that includes reconfigurable lifting step arrays and reconfigurable address generator are proposed. To validate this architecture, a FPGA prototype is developed to test the reconfiguration of 2-D discrete 5/3 and 9/7 transform （defined in JPEG2000）and 2-D continuous Haar wavelet transform. The experiment results show that this design is generic and scalable.