2D Real-valued Discrete Gabor Transform and Its Fast Algorithms

Author

Juanjuan, Gu ; Liang, Tao ; Bin, Luo

Author_Institution

Hefei Univ., Hefei

fYear

2007

Firstpage

148

Lastpage

151

Abstract

A 2D real-valued discrete Gabor transform (RDGT) for image representation is presented in this paper. The Gabor basis functions of the proposed transform are time-shifting windows modulated by cosine waves. Fast algorithms for the computation of the proposed transform coefficients and for the reconstruction of the original image from the coefficients are developed based on 2D discrete cosine transform (DCT). The image coding performance and difference between 2D RDGT and 2D DCT show that the proposed transform is an excellent preprocessing tool for image recognition, image interpretation, texture segmentation, and texture discrimination.

Keywords

Gabor filters; discrete cosine transforms; image coding; image recognition; image reconstruction; image representation; image segmentation; image texture; 2D discrete cosine transform; 2D real-valued discrete Gabor transform; cosine waves modulation; image coding; image interpretation; image recognition; image reconstruction; image representation; preprocessing tool; texture discrimination; texture segmentation; time-shifting windows; Computer science; Discrete Fourier transforms; Discrete cosine transforms; Discrete transforms; Fourier transforms; Image coding; Image recognition; Image reconstruction; Image representation; Image segmentation; Discrete cosine transform (DCT); Image coding; Real-valued discrete Gabor transform;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference, 2007. CCC 2007. Chinese

Conference_Location

Hunan

Print_ISBN

978-7-81124-055-9

Electronic_ISBN

978-7-900719-22-5

Type

conf

DOI

10.1109/CHICC.2006.4346962

Filename

4346962