【摘要】 基于傅里叶光学二次滤波技术,本文提出了一种新的光学图像相减方法,即全息滤波光学图像相减法,该方法需用图像的逆转和匹配两种滤波器和一个8f光学系统,实验表明,作为一种新的图像相减方法,避免了以往实时法对光程的精细控制,因而降低了对辅助设备和环境的要求.更多还原

【Abstract】 On the basis of two-time filting technique in Fourier optics, a new method for performing optical image subtraction is proposed. A matched holographic filter, a inverse holographic filter of a image and a 8f coherent optical information processing system are used in this scheme. Experiments show that this method is simple and feasible.更多还原