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An efficient architecture for two-dimensional discrete wavelet transform
Po-Cheng Wu; Liang-Gee Chen;
Circuits and Systems for Video Technology, IEEE Transactions on
Volume 11,
Issue 4,
April 2001
Page(s):536
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545
Abstract:
This paper proposes an efficient architecture for the two-dimensional discrete wavelet transform (2-D DWT). The proposed architecture includes a transform module, a RAM module, and a multiplexer. In the transform module, we employ the polyphase decomposition technique and the coefficient folding technique to the decimation filters of stages 1 and 2, respectively. In comparison with other 2-D DWT architectures, the advantages of the proposed architecture are 100% hardware utilization, fast computing time (0.5-0.67 times of the parallel filters'), regular data flow, and low control complexity, making this architecture suitable for next generation image compression systems, e.g., JPEG-2000
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