基于双相机的激光照射性能监测系统图像畸变矫正方法

Image Distortion Correction Method Based on Dual-camera Laser Irradiation Performance Detection System

针对传统双相机系统,在对可见光图像做畸变矫正后,无法对红外光图像进行矫正的问题,本文提出了一种基于双相机透视系统的矫正靶板图像透视畸变的方法。采用双路CCD相机、靶板、激光照射器和计算机构建激光照射器检测系统,利用标准网格板确定坐标变换矩阵;利用畸变前后的合作目标点确定可见光透视变换矩阵;利用坐标变换矩阵和可见光透视变换矩阵确定红外光透视变换矩阵,进而实现对靶板图像的畸变矫正。实验结果表明:该算法运用坐标变换,矩阵运算,实现了在三维空间中同时矫正双相机透视系统下的可见光图像和红外光图像;不需要测量偏转角度与实时距离,大大降低了实验难度和复杂度;算法可行性高,简单易行,稳定性好。

For traditional dual camera systems,after distortion correction of visible light image,not correcting infrared light image,in this paper,a method of correcting perspective distortion of target image based on dual camera perspective system was presented.The dual CCD camera,target plate,laser irradiator and computer were adopted in laser irradiator detection system.A standard grid plate was used to determine the coordinate transformation matrix;the cooperative target points before and after distortion were used to determine the perspective transmission matrix;the coordinate transformation matrix and visible light perspective transformation matrix were used to determine infrared perspective transformation matrix;and then the distortion correction of the target image was achieved.Experimental results showed that the algorithm used coordinate transformation and matrix operation to achieve simultaneous correction of visible light images and infrared light images in a three-camera perspective system without measuring the deflection angle and real-time distance,which greatly reduced the experimental difficulty and complexity.The algorithm was highly feasible,simple and easy to implement and had good stability.