| Paper: | SPTM-P8.5 | ||
| Session: | Adaptive Systems and Filtering II | ||
| Time: | Thursday, May 18, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Adaptive Systems and Filtering | ||
| Title: | Coefficient Symmetry for Implementing Odd-Order Lagrange-Type Variable Fractional-Delay Filters | ||
| Authors: | Tian-Bo Deng, Toho University, Japan | ||
| Abstract: | Lagrange-type variable fractional-delay (VFD) filters are simple and fundamental tools for high-resolution image interpolation. In this paper, we first reveal and theoretically prove the coefficient-symmetry of odd-order Lagrange-type VFD filters, and then exploit the coefficient-symmetry in implementing the VFD filters. We show that the odd-order Lagrange-type VFD filters can be efficiently implemented as the Farrow structure and even-odd structure whose more than half subfilters have symmetric or antisymmetric coefficients, thus the storage cost for the subfilter coefficients can be reduced by 50%, and the number of multiplications required for VFD filtering can also be reduced by 50%, which leads to high-speed signal processing. | ||
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