计算机应用 ›› 2011, Vol. 31 ›› Issue (12): 3366-3369.
• 图形图像技术 • 上一篇 下一篇
田宝华1,李宝峰2
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TIAN Bao-hua,LI Bao-feng
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摘要: 提出了一种二维离散小波提升变换(2DDWT)的2×2并行结构。该结构充分利用了2DDWT算法固有的行并行、列并行、行列并行的三种并行性,有效提高了算法执行速度,同时显著降低了硬件存储需求。处理N×N图像的时间为N2/4+N/2+1,系统存储需求为3N。FPGA实现结果证明了本设计的正确性和有效性。
关键词: 二维离散小波提升整数变换, 并行结构, 现场可编程门阵列
Abstract: A 2x2 parallel architecture for the lifting-based 2D Discrete Wavelet Transform (2DDWT) is presented. The architecture exploits three inherent parallelisms in 2DDWT - row parallel, column parallel and row-column parallel to improve the execution speed and reduce the memory requirement. The proposal takes N2/4+N/2+1 clocks to transform a N×N image while only 3N internal memory is required. The architecture is verified by simulation and implemented in a StratixⅡFPGA
Key words: Discrete Wavelet Transform (DWT), parallel atchitecture, Field Programmable Gate Array (FPGA)
中图分类号:
TP302
田宝华 李宝峰. 二维离散小波提升变换算法的并行结构设计[J]. 计算机应用, 2011, 31(12): 3366-3369.
TIAN Bao-hua LI Bao-feng. Parallel architecture for lifting-based 2DDWT algorithm[J]. Journal of Computer Applications, 2011, 31(12): 3366-3369.
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http://www.joca.cn/CN/Y2011/V31/I12/3366