摘要
激光相干告警系统要获取的基本信息是入射激光的频率和入射角度,为了从激光干涉条纹图像中获取这些参数,文中的处理思路是:首先借用Matlab软件对获得的图像进行滤波、二值化等处理,然后运用几何学中弧线、直线交点等方法计算二值图像中圆心和半径等参数,再根据数学模型计算、转换出激光的入射角和频率。这种图形计算的方法完全不同于传统的曲线拟合手段,但通过对多帧图像的处理和演示系统验证,计算方法可行,结果正确,探索了图像处理和分析技术与几何学在激光告警领域中的综合应用,为今后的工程化提供了原理验证基础。
Frequency and incident angle of the laser are basic information acquired by laser mutual - interference alarm system. We used the following methods for obtaining these parameters from laser interference patterns： First, processing the acquired images with filtering and binary morphology by using Matlab software; Then finding the centers and the radii of the circles by using geometry method; Finally, calculating the frequencies and the angles by conversion expressions. The method is absolutely different from the traditional curve - fitting method. By the processing of several images and system demonstration, we proved that the calculation method is feasible and the results are right.
出处
《电光与控制》
北大核心
2007年第1期61-64,共4页
Electronics Optics & Control
基金
航空科学基金项目(02D13002)
