远距离三维坐标测量中双目视觉系统的测量精度分析  

Measuring Precision Analysis of Binocular Vision System in Remote Three-Dimensional Coordinate Measurement

作　　者：刘胜道[1] 邢成聪 周国华[1] Liu Shengdao;Xing Chengcong;Zhou Guohua(School of Electrical Engineering,Naval University of Engineering,Whuhan,Hubei 430033,China)

机构地区：[1]海军工程大学电气工程学院,湖北武汉430033

出　　处：《激光与光电子学进展》2021年第14期431-437,共7页Laser & Optoelectronics Progress

摘　　要：针对双目视觉系统在远距离目标点三维坐标测量中的问题,首先,基于双目视觉测量系统的原理,分析了双目视觉中相机标定和三维定位过程的主要误差来源;然后,推导了双目视觉三维定位测量系统与相机参数、特征点匹配精度、像元大小、焦距、基线长度与测量距离之间的导数关系。最后,通过仿真实验得到各参数对测量系统定位误差的影响。实验结果表明,该误差模型对双目视觉测量系统的设计具有一定的指导意义。Aiming at the problem of binocular vision system in three-dimensional coordinate measurement of remote target point.First,this article analyzes the main error sources of camera calibration and three-dimensional positioning process in binocular vision are analyzed based on the principle of binocular vision measurement system.Then,derivative relations between binocular vision three-dimensional positioning measurement system and camera parameters,matching accuracy of feature points,pixel size,focal length,baseline length and measurement distance are derived.Finally,the influence of each parameter on the positioning error of the measurement system is obtained through the simulation experiment.The experimental results show that the error model has a certain guiding significance for the design of binocular vision measurement system.

关 键 词：视觉光学 双目视觉 精度分析 三维坐标测量 远距离测量 

分 类 号：TN386[电子电信—物理电子学]