一种通用数字图象的快速傅立叶变换及滤波系统的设计与实现

二维傅立叶变换及频域滤波被广泛地应用在数字图象处理的各个领域之中。以往要对图片进行频域滤波处理,都要用编制特定程序的方法来实现,对于不同的图片就要编制不同的程序,这样做往往许多工作都是重复性的,效率很低。本文提出了一个二维快速傅立叶变换及滤波系统的概念,以避免重复性劳动,提高工作效率。这个系统提供了一般数字图象处理中频域处理所需的功能,要对不同的图片作不同的滤波处理,只要适当地改变相应的参数即可,不必重新编制特定的程序来完成。本文提出了这个系统的设计思想、实现方法。最后在PDP-11/23计算机及与之相联的CBX-1600图象处理系统上实现了这个系统。

The Design and Implemenation of a General Purpose Digital Image Fourier Transform and Filtering System

A concept of two-dimensional fast fourier transform and filtering system is raised in this article. In the past, a special purpose program would be needed when we wanted to filter a picture. Different programs should be designed for different pictures. This kind of work is always lower efficient and time-consuming. The two-dimensional fast fourier transform and filtering system are carefully designed for the needs of most image processing fields. When different pictures are processed, only different parameters are needed rather than different programs. The design idea and implementation methods are discribed in detail in this article.