A Linear Optimization of Dual-Tree Complex Wavelet Transform
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概要
- 論文の詳細を見る
In this paper, a linear optimization of the dual-tree complex wavelet transform (DTCWT) based on the least squares method is proposed. The proposed method can design efficient DTCWTs by improving the design degrees of freedom and solving the least square solution iteratively. Because the resulting DTCWTs have good approximation accuracy of the half sample delay condition and the stopband attenuation, they provide precise shift-invariance and directionality. Finally, the proposed DTCWTs are evaluated by applying to non-linear approximation and image denoising, and showed their effectiveness, compared with the conventional DTCWTs.
- 2011-06-01
著者
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Kyochi Seisuke
Department Of Electronics And Electrical Engineering Keio University
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Ikehara Masaaki
Department Of Electronics And Electrical Engineering Keio University
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Ikehara Masaaki
Department Of Electrical Engineering Keio University
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Shimizu Takafumi
Department Of Biomolecular Engineering Kyoto Institute Of Technology
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Shimizu Takafumi
Department Of Electronics And Electrical Engineering Keio University
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