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总览 评价 李永波 , 谢雪梅 * , 梁莉莉 ( 西安电子科技大学智能感知与图形理解教育部重点实验室,陕西西安,710071; ) 摘要: 本文详述了一种任意频分方向滤波器组的设计思想及过程,这类方向滤波器组是通过将一维滤波器组应用到图像的伪极傅里叶变换域得
李永波, 谢雪梅*, 梁莉莉
(
西安电子科技大学智能感知与图形理解教育部重点实验室,陕西西安,710071; )
摘要:
本文详述了一种任意频分方向滤波器组的设计思想及过程,这类方向滤波器组是通过将一维滤波器组应用到图像的伪极傅里叶变换域得到的,根据这种设计方法可以实现均匀或非均匀方向滤波器组。文中首先分析了该设计思想,并解决了设计中的关键问题,进而根据这种思想得到了实现步骤;然后介绍了方向滤波器组在MATLAB中的实现函数;最后提供了相关仿真实验用以验证方向滤波器组的性质,同时对这些仿真实验进行了说明。
关键词:
方向滤波器组;任意方向频分;伪极傅里叶变换
LI Yongbo, XIE Xuemei*, LIANG Lili
(
Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education, Xidian University, Xi'an, Shaanxi, 710071; )
Abstract:
In this paper, the design principle and procedure of the directional filter banks (DFB) with arbitrary frequency partitioning is introduced. This kind of DFB is obtained by employing one-dimensional filter banks to pseudo-polar Fourier transform of the input image. By doing so, both uniform and nonuniform DFB can be obtained. This paper first analyzes the design principle, as well as some key problems being solved. Then the procedure of realizing this DFB, together with the implement functions of the DFB in MATLAB, is provided. Finally, some simulations with detailed explanation are given to verify the performance of the proposed DFBs.
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