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CCSDS中二维整数小波变换的FPGA实现方法
Alternative TitleFPGA Based Design of Integer 2D-DWT in CCSDS Standard
张学全; 陈晓敏; zhang_x.q@163.com
Department空间技术部
Source Publication半导体光电
2012
Volume33Issue:5Pages:747-751
ISSN1001-5868
Language中文
KeywordCcsds图像压缩 小波变换
AbstractCCSDS空间图像压缩标准(CCSDS 122.0-B-1)的核心算法之一是三级二维小波变换,此变换适合用可编程逻辑电路实现。文章介绍了整数9/7小波变换的特点,提出了一种基于FPGA的二维变换快速实现结构,该方法利用FPGA内部Block RAM进行行暂存,实现了行列同时变换的效果,节省了内部寄存器资源,并获得了较高的数据吞吐率。在此基础上,文章还给出了两种适用于不同需求的多级变换架构,并通过仿真验证了其合理性。
Other AbstractThe core standard recommended by CCSDS for spatial digital image compression (CCSDS 122.0-B-1) includes a three-level discrete wavelet transform (DWT), which is suitable for the implementation on logical circuit. In this article, the features of 9/7 integer DWT are introduced and a fast implementation method based on FPGA is proposed. In this method, a number of pieces of on-chip Block RAM are used as cache for row-transformed data so that the row transform and column transform can be processed simultaneously. The method saves logic cells and produces a high data throughput. In addition, based on the method, two kinds of multilevel DWT implementation architectures are given and the availability is verified by simulations.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2872
Collection空间环境部
Corresponding Authorzhang_x.q@163.com
Recommended Citation
GB/T 7714
张学全,陈晓敏,zhang_x.q@163.com. CCSDS中二维整数小波变换的FPGA实现方法[J]. 半导体光电,2012,33(5):747-751.
APA 张学全,陈晓敏,&zhang_x.q@163.com.(2012).CCSDS中二维整数小波变换的FPGA实现方法.半导体光电,33(5),747-751.
MLA 张学全,et al."CCSDS中二维整数小波变换的FPGA实现方法".半导体光电 33.5(2012):747-751.
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