【摘要】 <正>光学图象的微分处理是突出图象的边缘轮廓的方法.人的眼睛对于图象边缘轮廓比较敏感.我们在制作微分滤波器时,使用观察杨氏条纹的移动来选择光学薄膜的厚度,以实现δ(x,y)的π相位延迟.一般的光学图象可用二元函数f(x,y)来表示.按照二元函数偏微分的定义,函数f(x,y)的一阶偏微分可表示为:更多还原

【Abstract】 This paper presents the principle, method and experimental results in developing differential filter and image differential processing by means of optical transformation technique and coherent optical correlation method, and offers our considerations of stroke-classification of Chinese characters and picking up Chinese characters to be realized by optical partial differential and optical image correlation technique.更多还原