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Alternative TitleFPGA Design and Implementation of Real-time 2D-DWT in Space Image Compression System
王鸣哲; 薛长斌; 张学全
Source Publication微电子学与计算机
KeywordCcsds图像压缩标准 提升小波变换 实时性
Other AbstractThe standard recommended by CCSDS for space image compression includes a three-level two-dimensional discrete wavelet transform,which is suitable for design and implementation on logical circuit.In this article,a VLSI architecture of 5/3 2D-DWT is proposed,which can meet the demand of real-time processing.This structure adopts pipelined designing and uses the localization of wavelet to compute row and column transform in the same time.As for three-level discrete wavelet transform,this structure adopts pipelined designing either.This structure can reduce the memory usage and the delay of read and write,increase the speed of wavelet transform,make full use of logical resources of FPGA,and reduce the demand of external RAM.Experiment results show that this structure can meet the demand of real-time processing entirely,and provided favorable conditions for coding and transmission.
Indexed ByCSCD
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Document Type期刊论文
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GB/T 7714
王鸣哲,薛长斌,张学全. 星载图像压缩系统中实时二维小波变换的FPGA设计与实现[J]. 微电子学与计算机,2017,34(7):33.
APA 王鸣哲,薛长斌,&张学全.(2017).星载图像压缩系统中实时二维小波变换的FPGA设计与实现.微电子学与计算机,34(7),33.
MLA 王鸣哲,et al."星载图像压缩系统中实时二维小波变换的FPGA设计与实现".微电子学与计算机 34.7(2017):33.
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