利用光栅编码作用图像的等密度提取及边缘增强

Realizing Edge-enhancement and Equidensitometry of Image by using Grating Encoding

本文讨论了光栅编码片在一定曝光量情况下,某一透过率有最大一级衍射光强的性质,利用这一特性提出用光栅编码的方法实现对图像的等密度提取及边缘增强的方法,理论与实验结果一致。

In this paper,we have discussed and explained the characteristic which the grating encoded plate has a maximum diffraction intensity of the first-order.The area of encoded plate which has the maximum diffraction lintensity is corresponding to the definite object transmission as the encoding exposure is fixed.This property is very useful in grating copying and manu- facturing of tricolor grating.In this paper,we propose two new applications of grating encoded plate in image processing by using above characteristic,which are both equidensitometry and edge-enhancement of image.The experimentalresu- ts are very good and consistent with the theory analysis.