基于提升算法的二维离散9/7小波变换的VLSI结构设计

The VLSI Structural Design of Two-dimensional Discreteness 9/7 Small Wave Conversion Based on the Lifting Operation

本文提出了一种改进型的基于(9/7)提升小波的二维离散小波变换(DWT)实现方法。该方法对列变换的次序加以调整,按照行方向进行变换,从而使行列变换结合起来。利用该方法所得的结构使列变换和行变换并行处理,加快了变换速度,大大提高了小波变换的效率。二维离散小波变换的结构已经通过Verilog HDL行为级仿真验证。

The present paper puts forward a refined two dimensional discreteness small wave conversion based on the 9/7 lifting operation. The method adjusts the order of column （vertical） conversion and tries to make conversion in the row （horizontal） direction, thus combining the two kinds of conversions. By employing the method, the converting speed can be quickened and the converting efficiency of small waves can be raised.