一种基于提升的二维离散小波变换VLSI架构  

A VLSI Architecture for Lifting-based 2-D Discrete Wavelet Transform

作　　者：王超[1] 曹鹏[1] 李杰[1] 黄伟达[1] 

机构地区：[1]东南大学国家专用集成电路系统工程技术研究中心,江苏南京210096

出　　处：《现代电子技术》2007年第14期114-118,共5页Modern Electronics Technique

摘　　要：离散小波变换(Discrete Wavelet Transform,DWT)需要较多的运算量以及较大的存储器空间,为了使之适用于实时的图像处理应用,就需要开发特殊的架构和芯片来提高离散小波变换的运算性能。基于提升的二维DWT提出了一种新型的VLSI结构——LLSP架构,其结合逐级和基于行的架构这两者特点,带来了硬件开销和存储器空间的降低,并可以用于多提升步骤的扩展以及多级二维离散小波变换。Discrete Wavelet Transform （DWT） is a computationally intensive process and the memory requirement for its implementation is also high. To make it is suitable for real - time image processing applications, it is essential to develop special -purpose architectures and custom VLSI chips for computation of DWT. In this paper, we propose a new lifting - based 2 - D DWT architecture. The architecture is a hybrid of level - by - level and line - based architectures and has less hardware cost and memory requirement. It can be extended to multi - lifting steps and can be used for multi - level 2 - D DWT.

关 键 词：离散小波变换 提升 VLSI JPEG2000 

分 类 号：TN406[电子电信—微电子学与固体电子学]