TY - GEN
T1 - Spatter tracking in laser machining
AU - Viitanen, Timo
AU - Kolehmainen, Jari
AU - Piché, Robert
AU - Okamoto, Yasuhiro
PY - 2012
Y1 - 2012
N2 - In laser drilling, an assist gas is often used to remove material from the drilling point. In order to design assist gas nozzles to minimize spatter formation, measurements of spatter trajectories are required. We apply computer vision methods to measure the 3D trajectories of spatter particles in a laser cutting event using a stereo camera configuration. We also propose a novel method for calibration of a weak perspective camera that is effective in our application. The proposed method is evaluated with both computer-generated video and video taken from actual laser drilling events. The method performs well on different workpiece materials.
AB - In laser drilling, an assist gas is often used to remove material from the drilling point. In order to design assist gas nozzles to minimize spatter formation, measurements of spatter trajectories are required. We apply computer vision methods to measure the 3D trajectories of spatter particles in a laser cutting event using a stereo camera configuration. We also propose a novel method for calibration of a weak perspective camera that is effective in our application. The proposed method is evaluated with both computer-generated video and video taken from actual laser drilling events. The method performs well on different workpiece materials.
UR - http://www.scopus.com/inward/record.url?scp=84866697204&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866697204&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-33191-6_62
DO - 10.1007/978-3-642-33191-6_62
M3 - Conference contribution
AN - SCOPUS:84866697204
SN - 9783642331909
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 626
EP - 635
BT - Advances in Visual Computing - 8th International Symposium, ISVC 2012, Revised Selected Papers
T2 - 8th International Symposium on Visual Computing, ISVC 2012
Y2 - 16 July 2012 through 18 July 2012
ER -