Image Enhancement of Laser Welding Molten Pool Feature in Frequency Domain

DOI

10.2991/emeit.2012.267How to use a DOI?

Keywords

molten pool, keyhole, frequency domain, image enhancement

Abstract

Molten pool image feature extraction is the key to judge welding quality. The commonly used method of spatial domain image processing is an operation for each pixel of an image, which is sensitive to noises. The frequency domain image processing could overcome the shortcomings of the spatial domain image process, it modifies the parameters within the image transform domain and operates the whole image, and then implements inverse transformation to get processed image. During the high-power fiber laser welding, in order to obtain effective and accurate molten pool keyhole image features, frequency domain image enhancement was used to remove noises and obtain the molten pool keyhole feature information. The experimental results showed that the image enhancement in the frequency domain was better than the spatial domain image processing in molten pool feature extraction.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ling MO
AU  - Xiangdong GAO
AU  - Deyong YOU
PY  - 2012/09
DA  - 2012/09
TI  - Image Enhancement of Laser Welding Molten Pool Feature in Frequency Domain
BT  - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012)
PB  - Atlantis Press
SP  - 1213
EP  - 1216
SN  - 1951-6851
UR  - https://doi.org/10.2991/emeit.2012.267
DO  - 10.2991/emeit.2012.267
ID  - MO2012/09
ER  -