光栅滤波过程的仿真实现

Computer simulation of grating filtering

提出了一种利用MATLAB软件仿真光栅滤波过程的方法。即改变光栅滤波器的类型,可以对输入图象的傅里叶变换频谱信息的±1级信息进行分离并相干叠加,实现图像相减及图像微分处理。这种仿真实验也给光学光栅滤波器的设计和图像处理带来很大方便,为进一步拓展光栅滤波器的应用提供了一定基础。

A method based on MATLAB to simulate the optical image information processing with computer is presented. By means of changing the types of grating filters,the ± 1 level information in fourier frequency spectrum can coherent superpose. Optical image differentiation and image subtraction are obtained. The results show that the simulating experiments are helpuful to the grating filter design and the image processing. At the same time,it offers the theoretical basis for widening of the application of the grating.