哈工大信息光学Chapter8-1.pdf

幻 灯 片 Chapter 8 1 Analog Optical Information Processing Weimin Sun College of Science Harbin Engineering University 幻 Mesh ：网状物 灯 Replica ：复制品 片 The Abbe-Porter experiments Manipulate：操作，处理 2 n An object consisting of a fine wire mesh is illuminated by collimated, coherent light. n In the back focal plane of the imaging lens appears the Fourier spectrum of the periodic mesh, and finally in the image plane the various Fourier components passed by the lens are recombined to form a replica of the mesh, it is possible to directly manipulate the spectrum of the image in a variety of ways. 幻 灯 Setup of the Abbe-Porter 片 experiment 3 幻 灯 片 Spectrum of the mesh 4 幻 灯 片 5 幻 灯 片 6 幻 灯 片 Applications of Abbe’s theory 7 n High-pass filter to enhance the edge of objects 幻 灯 片 8 n To remove the background and distinguish the special points 幻 灯 片 9 n To remove the lines 幻 灯 片 10 n To distinguish the signals 幻 灯 片 11 n Optical differential 幻 灯 片 12 幻 Unstained：清白的，无污染的 灯 The Zernike phase-contrast Bacterium：细菌 片 microscope Predominant ：主要的，突出的，卓 13