双相机工业摄影测量系统精度影响几何因素测评

介绍了影响双相机系统精度的多种几何因素并进行实验测试,进一步对双相机工业摄影系统的精度进行优化;采用高精度单相机系统的测量值作为精度评定的参考值,改变双相机测量系统不同的几何结构,如摄影距离,摄影基线,以及基线偏离检定场中轴线位置等。并对单、双相机系统测量的数据结果进行比对测试。实验结果表明基线长度与摄影距离的改变对点位精度影响最大,前后对比最大值可达0.3mm,改变摄影光轴与基线的夹角对精度影响较小,仅0.04mm。

Evaluation on Accuracy Influence Factor of Dual Camera Industrial Photogrammetric System

Introduced the geometric factors which influenced the measurement accuracy of the dual camera industrial photogrammetric system and conducted an experimental test on them, further optimized the precision of the dual camera industrial photographic system; by using the high accuracy single camera system as the reference, from the respect such as the photography distance, the baseline length and the baseline deviation from the axis position of the test field, the geometric structure of the dual camera measurement system is changed, then analysed and compared with the results of their data. In conclusion, the change of the baseline length and the photography distance has a great influence on position accuracy, and the contrast between the baseline is up to 0.3mm. The change of the angle between the optical axis is less affected, only 0.04mm.