基于双目视觉的目标测距系统

Target Ranging System Based on Binocular Vision

为准确测量目标的距离信息,提出一种基于双目视觉的目标测距系统。该系统采用张正友棋盘标定法进行双目相机标定求出摄像机内外参数,其次利用标定的参数对左右摄像机采集的图像进行立体校正消除畸变形成共面行对准,然后采用立体匹配算法对校正后的左、右图像进行像素点匹配生成视差图,最后根据三角形相似原理进行目标距离估计获得目标三维点坐标。实验结果显示,该系统的近距离测量精度较高,误差较小。

In order to accurately measure the distance information of the target,a target ranging system based on binocular vision is proposed.Zhang Zhengyou’s checkerboard calibration method is used to calibrate the binocular camera to find out the parameters inside and outside the camera,and then the calibrated parameters is used to stereoscopic correction of the images collected by the left and right cameras to eliminate distortion to form a coplanar line alignment,and then the stereoscopic matching algorithm to match the left and right images after calibration is used to generate parallax maps,and finally to estimate the target distance according to the triangle similarity principle to obtain the target three-dimensional point coordinates.The experimental results show that the system has high close-range measurement accuracy and small error.