DCT kernel based finite discrete Gabor expansion and transform implemented by filterbanks

Author

Gu, Juan-juan ; Zhang, Jun ; Tao, Liang

Author_Institution

Dept. of Electron. Inf. & Electr. Eng., Hefei Univ., Hefei, China

Volume

1

fYear

2010

fDate

22-24 Oct. 2010

Abstract

DCT kernel based finite discrete Gabor expansion (DGE) and discrete Gabor transform (DGT) implemented by filterbanks are presented. An analysis filterbank is designed for the finite DGT and a synthesis filterbank is designed for the finite DGE. The parallel channel in each of the two filterbanks has a unified structure and can apply the fast DCT (discrete cosine transform) algorithm to reduce its computational load. The computational complexity of each parallel channel is very low and is independent of the oversampling rate of the DGT. The computational complexity of the proposed parallel method is analyzed and compared with that of the existing major parallel algorithms for the finite DGT and DGE. The results show that the proposed parallel implementation of the DCT kernel based finite DGE and DGT is attractive for real time signal processing.

Keywords

Gabor filters; computational complexity; discrete cosine transforms; DCT; computational complexity; discrete cosine transform; filterbanks; finite discrete Gabor expansion; finite discrete Gabor transform; parallel algorithms; real time signal processing; Filter bank; Manganese; DCT kernel; filterbank; finite discrete Gabor expansion; finite discrete Gabor transform; oversampling rate;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Application and System Modeling (ICCASM), 2010 International Conference on

Conference_Location

Taiyuan

Print_ISBN

978-1-4244-7235-2

Electronic_ISBN

978-1-4244-7237-6

Type

conf

DOI

10.1109/ICCASM.2010.5620609

Filename

5620609