获取激光参数的图像处理方法研究

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.

Digital image processing technique for acquiring laser parameters

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.