实值离散Gabor变换窗函数的快速求解方法  

Fast computational method for basic window functions of real-valued discrete Gabor transforms

作　　者：徐沁[1] 陶亮[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,合肥230039

出　　处：《计算机工程与应用》2009年第9期57-59,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(No.60572128);安徽省人才开发资金(No.2005Z029);安徽大学人才队伍建设项目和创新团队基金;安徽省电子制约技术重点实验室基金资助。~~

摘　　要：为了有效地实现实值离散Gabor变换,给出了一种基于DHT的实值离散Gabor变换窗函数的快速求解方法。该方法利用Hartley函数的正交性将原求解窗函数的双正交条件式简化,将原求解方程组分解成若干独立的子方程组,从而节省了大量的计算量,加快了求解速度。文中还给出了实验做比较,验证了方法的有效性和在计算时间方面的优越性。This paper presents a fast computational method for basic window functions of real-valued discrete Gabor transforms based on DHT in order to realize real-valued discrete Gabor transforms efficiently.h makes the original bi-orthogonal condition of computing basic window functions simpler by using the orthogonality of Hartley functions,and then separates the original equation set into several independent sub-equation sets.So this can save a considerable computation.Some experiments have been given to demonstrate the efficiency and the advantages of decreasing the computational time of the proposed method in comparison to the original method.

关 键 词：实值离散GABOR变换 窗函数 信号分析 

分 类 号：TN911.72[电子电信—通信与信息系统]