双目立体视觉系统测量精度的分析

摘要

双目立体视觉系统的几何参数影响双目视觉的测量精度,且各几何参数间存在着一定的约束关系.通过分析双目视觉系统的几何参数及约束关系,讨论了两相机光轴和基线之间的夹角α1和α2、基线距B、投影角等几何参数对测量精度的影响,并采用Matlab软件对不同的几何参数下的测量精度进行仿真,找出最佳的几何参数范围,从而提高了双目立体视觉系统的测量精度.最后,通过试验验证了理论分析的正确性.%The geometric parameters of the binocular stereo vision system are important to the measurement accuracy of binocular vision. There is a certain constraint relationship between the geometric parameters. By analyzing the geometric parameters and constraints of the binocular vision system, geometric parameters such as the angle between the two camera optical axis and baseline α1 and α2, the baseline distance B, the projection angle and so on which impact on the measurement accuracy are discussed. The measurement accuracy of different geometric parameters is simulated by Matlab software, the best range of geometric parameters to improve the measurement accuracy of the binocular vision system is achieved. Finally, the correctness of theoretical analysis is verified by experiment.