Novel DCT-based real-valued discrete Gabor transform

被引:1
作者
Tao, Liang [1 ]
Kwan, Hon Keung [2 ]
机构
[1] Anhui Univ, MOE Key Lab Intelligent Comp & Signal Proc, Hefei 230039, Anhui, Peoples R China
[2] Univ Windsor, Dept Elect & Comp Engn, Windsor, ON N9B 3P4, Canada
来源
PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10 | 2008年
关键词
D O I
10.1109/ISCAS.2008.4541630
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
The traditional DCT-based real-valued discrete Gabor transform (RGDT) was limited to the critical sampling case. The biorthogonality relationship between the analysis window and the synthesis window for the transform has not been unveiled. To overcome those drawbacks, this paper proposes a novel DCT-based real-valued discrete Gabor transform, which can be applied under both the critical sampling condition and the over-sampling condition. And the biorthogonality relationship between the analysis window and the synthesis window for the transform is also proved in this paper. Because it only involves real operations and can utilize fast DCT and IDCT algorithms for fast computation, it facilitates computation and implementation by hardware and/or software compared to the traditional complex-valued discrete Gabor transform.
引用
收藏
页码:1164 / +
页数:2
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