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Enhancement method of micro-gap weld magneto-optical image
Author(s): 
Pages: 17-22
Year: Issue:  6
Journal: Welding Technology

Keyword:  magneto-optical imagingmicro-gap seamimage enhancement;
Abstract: For micro-gap(the gap width was less than 0.1 mm) seam laser butt welding, an adaptive median filter method was applied for removing magneto-optical image noise. The edge characteristic of weld transition region was enhanced by wavelet transform image enhancement technology, finally, micro-gap weld position was detected.Experimental result showed that using adaptive median filtering method the weld transition region could be accurately identified and weld position extraction could be realized, which provided a foundation for the real-time weld tracking of laser welding.
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