Abstract
In this paper we present a method for the inspection of protrusion of coils along the circumference of a given circle. Perspective distortion makes a circle in a world an ellipse on image. This makes protrusion inspection difficult. Our approach makes this problem simple by adjusting a camera's image plane to be parallel to the object's plane. Illumination system uses a back light and coaxial light which enables a robust and simple detection of a reference point for the inspection. First, a center of the circle is found through binarization and blob processing. Inspection area along the circumference of the circle is converted into rectangular image type using polar coordinates. Finally, binarization and blob processing is applied to detect the intrusion of the coil. Experimental results show the feasibility of the presented algorithm.
| Original language | English |
|---|---|
| Pages (from-to) | 469-473 |
| Number of pages | 5 |
| Journal | Journal of Institute of Control, Robotics and Systems |
| Volume | 23 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2017 |
Keywords
- Blob processing
- Coil
- Machine vision
- Protrusion inspection