线结构光传感器标定中角点提取方法的探讨

Discuss for Extraction Corner Points in the Calibration of Line Structure-light Sensor

鉴于角点提取对线结构光视觉检测系统标定精度的影响,在分析Harris和Forstner算子提取角点的原理及其优缺点的基础上提出了改进算法。通过实验表明,这种方法可以提取到定位精度更高的亚像素级角点,效果显著。

In view of the influence that the extraction precision of comer to the precision of calibration, this article has summarized the principle of extraction comer of Harris operator and the Forstner operator. Based on the analysis of their respective advantages and disadvantages, the revised algorithm to extract the comer is proposed. The experimental result indicates that the sub-pixel characteristic point with more accurate location and higher precision could be extracted by this method. And it works very well with using this method.