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Monitoring of High Power Laser Welding Process by Using Image Difference Algorithm

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Academic year: 2017

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Fig. 4.  Image difference process of near-infrared images of molten pool
Fig. 5.  Difference images accumulation results during laser beam focus on  the weld seam center (a) schematic of beam trajectory on weld seam center (b)  weld bead surface (c) 2D view of accumulation results of 1000 difference  images (d) 3D view of accum
Fig. 7.  Difference images accumulation results when laser beam deviated  from weld seam center gradually (a) schematic of beam trajectory deviated  from weld seam center gradually (b) weld bead surface (c) 2D view of  accumulation results of 1000 differen

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