MICROCOMPUTER ANALYSIS SYSTEM FOR THE LASER FOCAL SPECKLES
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Abstract:
An Analyzing method for the two dimensional laser focal film speckle image is introduced, and an analysis system is presented based on the method. The relationship between the gray level and the desity on the film is established according to the characteristics of CCD camera. An estimation formula of the laser energy generating the speckles and a formula to caculate the contrast ratio of the film are also established on the basis of the laser energy decreasing ratio and the physical property of the film . This paper discussed in detail the importance, method and caculation formula to obtain an image which possess entire information of laser energy by inlaying every smaller film speckle to the biggest one . The influence of the background density of the film to the integration of the energy is also discussed and the method to eliminate the influence is presented.
