Detection of Flaws in Weldment Images Using Region Growing Segmentation Technique

This paper presents an efficient detection method to highlight the flaws present in weld images. The obtained results further help in finding the size and location o f the flaw. The method is applied on X-ray images having flaws generated during the welding process. Using region-growing method we merge the adjacent detected pixels on homogeneity criteria, to obtain the flaws. Region growing starts with seed(s). The seed value is determined with the help of histogram analysis. The peaks and valleys o f histogram help in determining the seed value.

The developed algorithm is explained and applied on the welding images and some preliminary results are shown which are encouraging.