双目视觉系统的测量误差分析

Measuring errors analysis of binocular vision system

通过对双目视觉测量系统的研究,建立了双目视觉测量系统的误差模型,并分析了系统结构参数对测量结果的影响。在理论上对系统结构参数(两光轴夹角、基线距离)与测量精度之间的关系进行了系统、详尽的分析,得出了测量系统的位置误差对距离方向上的精度影响较大;光轴夹角的变化对测量误差影响不大,而距离方向的误差随着基线距离的增加而减小的结论。本文建立的误差模型对具体的双目视觉测量系统的设计具有指导作用。

The construction parameters that influenced the results were discussed and the measurement errors model in binocular measurement system was established.The relationship between measurement accuracy and construction parameters(the convergent angle and baseline distance) was analysed in detailed.The measuring accuracy of distance direction was sensitive to the position errors of measurement system than other direction.The convergent angle is less infection to the measuring accuracy of distance but the baseline distance is more.The measurement errors model is an important guidance to practice measurement.