Abstract
Based on the analysis of the groove images in gas metal arc welding with small slope angle, a new algorithm of the groove edge location was presented. The groove edge is effectively detected by combining Roberts Detector with the general nonlinear gradient operator. In addition, using Norton Quadratic Polynomial Interpolation, the edge location precision reaches sub-pixel level. The experimental results show that the edge detection system works well under the condition of short transfer arc welding.
| Original language | English |
|---|---|
| Pages (from-to) | 14-19 |
| Number of pages | 6 |
| Journal | China Welding (English Edition) |
| Volume | 11 |
| Issue number | 1 |
| State | Published - May 2002 |
| Externally published | Yes |
Keywords
- Groove edge
- Image processing
- Narrow gap welding
- Pixel