Title :
Features extraction for structured light image of welding seam with arc and splash disturbance
Author :
Xu, De ; Jiang, Zemin ; Wang, Linkun ; Tan, Min
Author_Institution :
Key Lab. of Complex Syst. & Intelligent Sci., Chinese Acad. of Sci., Beijing, China
Abstract :
A method of image process and features extraction for structured light image of welding seam with arc and splash disturbance is proposed. The seam area is detected by search with large step. The adaptive thresholds of image enhancement are determined in the frequency domain of the gray image. Then, the target image is pre-processed using image enhancement and binarization. After thinning the seam with its both edges, main characteristic line is obtained using Hotelling transform and Hough transform. Finally, the feature points in the seam are found according to its second derivative. Experimental results show its effectiveness, good performance in real time and adaptability to different seams.
Keywords :
Hough transforms; arc welding; feature extraction; image enhancement; image segmentation; image thinning; production engineering computing; Hotelling transform; Hough transform; adaptive threshold; arc disturbance; feature extraction; gray image; image binarization; image enhancement; image processing; splash disturbance; structured light image; welding seam tracking; Brightness; Feature extraction; Image enhancement; Image processing; Image recognition; Image segmentation; Karhunen-Loeve transforms; Pixel; Sensor systems; Welding;
Conference_Titel :
Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th
Print_ISBN :
0-7803-8653-1
DOI :
10.1109/ICARCV.2004.1469291
