Abstract: Creation of the two-step method for inspecting the spatial hole center coordinates with structured light stripe vision sensor is proposed for three-dimensional visual inspection system based on the industrial robot. According to the mathematical model of structured light stripe vision sensor, coordinate z of hole center is solved. Coordinates x, y are acquired by the hole center orientation relative to the camera optic center. The new approach is different from the traditional spatial hole inspection method with stereovision sensor. The research result shows that the two-step method is feasible and greatly expands the application range of the structured light stripe visual inspection system.

Key words: Center coordinates of spatial hole, Structured light stripe vision sensor, Three-dimensional visual inspection, Two-step method