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A High Speed 2D-DWT Parallel Hardware Architecture Using the Lifting Scheme  

김종욱 (한양대학교 전자공학과)
정정화 (한양대학교 정보통신대학)
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Abstract
In this paper, we present a fast hardware architecture to implement a parallel 2-dimensional discrete wavelet transform(DWT)based on the lifting scheme DWT framework. The conventional 2-D DWT had a long initial and total latencies to get the final 2D transformed coefficients because the DWT used an entire input data set for the transformation and transformed sequentially The proposed architecture increased the parallel performance at computing the row directional transform using new data splitting method. And, we used the hardware resource sharing architecture for improving the total throughput of 2D DWT. Finally, we proposed a scheduling of hardware resource which is optimized to the proposed hardware architecture and splitting method. Due to the use of the proposed architecture, the parallel computing efficiency is increased. This architecture shows the initial and total latencies are improved by 50% and 66%.
Keywords
DWT; hardware; parallel architecture; wavelet filter;
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Times Cited By KSCI : 1  (Citation Analysis)
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