| Paper: | SPTM-P10.7 | ||
| Session: | Multirate Systems and Denoising | ||
| Time: | Thursday, May 20, 15:30 - 17:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Multi-rate Signal Processing & Wavelets | ||
| Title: | A NEW COMPLEX WAVELET TRANSFORM BY USING RI-SPLINE WAVELET | ||
| Authors: | Zhong Zhang; Industrial Technology Center of Okayama Prefectrue | ||
| Hisanaga Fujiwara; Industrial Technology Center of Okayama Prefectrue | |||
| Hiroshi Toda; Okayama Prefectural University | |||
| Hiroaki Kawabata; Okayama Prefectural University | |||
| Abstract: | In this study, we propose a new complex wavelet, the RI-splinewavelet, which is constructed using spline wavelets for dual-tree DWT. In the RI-spline wavelet, the real and imaginary components become an approximate Hilbert pair to each other.Then we propose a new dual-tree algorithm which uses an interpolation method for providing a half-sample-delay betweenthe two filters of the trees. Finally, we experimentally showthat the translation invariance, which can not be obtained by the ordinary DWT, is obtained by RI-spline wavelet. | ||
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