计算机工程与应用Issue(5)：214-216,221,4.DOI:10.3778/j.issn.1002-8331.1404-0366
二维翻转结构9/7离散小波逆变换研究与VLSI实现
Algorithm study and VLSI implementation of flipping structure 2D 9/7 inverse discrete wavelet transform
摘要
Abstract
The circuit module of 2D lifting-structure based 9/7 Inverse Discrete Wavelet Transform(IDWT)is the key technology of the decoding and display and the real-time processing of the high resolution image. To improve the global performance of the circuit module, the principle theory of 2D lifting-structure 9/7 IDWT is studied. With the characters of the image data flow studied, the novel flipping-structure algorithm is proposed based on the circuit model. Further, the par-allel processing VLSI architecture of multi-processor based on the proposed algorithm is designed, in which the critical path is reduced to one multiplier by pipeline and only 4N transfer memory is needed for a N × N image by the data flow re-organization so that the memory consumption and the processing speed are improved simultaneously. The circuit module is synthesized and verified on Sparten6-xc6slx150t FPGA, which shows that the system can operate smoothly at 166.34 MHz clock rate.关键词
离散小波逆变换/翻转结构/流水线/低内存/并行结构Key words
Inverse Discrete Wavelet Transform(IDWT)/flipping-structure/pipeline/low memory/parallel architecture分类
信息技术与安全科学引用本文复制引用
宋有才,谭拂晓,王诗兵,韩波,赵正平..二维翻转结构9/7离散小波逆变换研究与VLSI实现[J].计算机工程与应用,2015,(5):214-216,221,4.基金项目
国家自然科学基金（No.61401101）；安徽省高校省级重点自然科学基金（No.KJ2012A214）；安徽省自然科学基金青年项目（No.1408085QF122）；东南大学毫米波国家重点实验室开放课题（No.K201401）；安徽省教育厅自然科学项目（No. KJ2013B194）；阜阳师范学院计算机应用研究所；阜阳师范学院科技成果孵化基金项目（No.2013KJFH05）。 （）
