首页 | 本学科首页   官方微博 | 高级检索  
     

离散信号和图象的实数形式Gabor变换
引用本文:陶,亮.离散信号和图象的实数形式Gabor变换[J].中国图象图形学报,2000,5(10):840-845.
作者姓名:  
作者单位:安徽大学电子工程与信息科学系!合肥230039(陶亮,张德龙),温莎大学电机与计算机工程系!加拿大(H.K.Kwan)
基金项目:国家留学基金委员会留学基金!(978340 11)
摘    要:定义了用于有限序列和图象表示的实数形式离散Gabor变换(RDGT)这种通过将复数形式离散Gabor变换(CDGT)的复数Gabor基本函数替换成实数Gabor基本函数而进行的实数变换,在算法复杂性上与CDGT相比,明显降低,并且由于RDGT与离散Hartley变换(DHT)有着相似的形式,从而使得RDGT能够利用快速的DHT加速变换,另外,RDGT系数与CDGT系数的实部和虚部之间有着非常简单的

关 键 词:离散Gabor变换  信号处理  图象处理  离散信号
收稿时间:1999/11/29 0:00:00
修稿时间:1999-11-29

Real Discrete Gabor Transform for Finite Discrete Signal and Image Representation
TAO Liang.Real Discrete Gabor Transform for Finite Discrete Signal and Image Representation[J].Journal of Image and Graphics,2000,5(10):840-845.
Authors:TAO Liang
Affiliation:Dept.of Electronic Engineering and Information Science,Anhui University,Hefei,Anhui 230039
Abstract:In this paper, we define 1 D and 2 D real discrete Gabor transforms (RDGT) for finite discrete signal and image representation. By replacing the complex Gabor basis functions of the complex discrete Gabor transform (CDGT) with real Gabor basis functions, a significant computation of the RDGT can be saved as compared with the computation of the CDGT. The similarity between the RDGT and the discrete Hartley transform (DHT) allows the RDGT to utilize the fast DHT algorithms for fast computation. In addition, not only does the RDGT have a simple relationship with the CDGT such that the CDGT coefficients can be directly computed from the RDGT coefficients, but the RDGT coefficients also have the same properties as the CDGT coefficients. Some simulation results are given at the end of this paper.
Keywords:Discrete gabor transforms  Discrete hartley transforms  Signal processing  Image processing
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《中国图象图形学报》浏览原始摘要信息
点击此处可从《中国图象图形学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号