Fig. 6.
Measured and estimated positions of detected weld defect in the image sequence: (a) original image sequence; (b) extracted potential defect regions; (c) recognized true defects (in red); (d) low contrast image sequence; (e) extracted potential defect regions of sequence (d); (f) recognized true defects (in red) of sequence (d). (For interpretation of the references to color in this figure caption, the reader is referred to the web version of this paper.)