| Presentation | 2008-03-07 A Design of Dual-Tree Discrete Wavelet Tansform Based on Least Squares Method Takafumi SHIMIZU, Seisuke KYOCHI, Masaaki IKEHARA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a novel design of dual-tree discrete wavelet transform based on least squares method. An effective design method based on allpass filter with FIR has proposed. However, this method holds two problems. First, optimal frequency characteristic cannot be realized due to the restriction of design parameters. Second, approximation of the half sample delay condition is restricted on low frequency. The proposed method can achieve the high design degrees of freedom by using least squares method. We show the method can design more effective dual-tree discrete wavelet transform than conventional one, in terms of sharpness of frequency characteristic and accuracy of half sample delay condition, directionality and shift-invariance, by simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Dual-Tree DWT / half sample delay condition / directionality / shift invariance / least squares method |
| Paper # | CAS2007-151,SIP2007-226,CS2007-116 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2008/2/29(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Communication Systems (CS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Design of Dual-Tree Discrete Wavelet Tansform Based on Least Squares Method |
| Sub Title (in English) | |
| Keyword(1) | Dual-Tree DWT |
| Keyword(2) | half sample delay condition |
| Keyword(3) | directionality |
| Keyword(4) | shift invariance |
| Keyword(5) | least squares method |
| 1st Author's Name | Takafumi SHIMIZU |
| 1st Author's Affiliation | Department of Electronics and Electrical Engineering, Keio University() |
| 2nd Author's Name | Seisuke KYOCHI |
| 2nd Author's Affiliation | Department of Electronics and Electrical Engineering, Keio University |
| 3rd Author's Name | Masaaki IKEHARA |
| 3rd Author's Affiliation | Department of Electronics and Electrical Engineering, Keio University |
| Date | 2008-03-07 |
| Paper # | CAS2007-151,SIP2007-226,CS2007-116 |
| Volume (vol) | vol.107 |
| Number (no) | 531 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |