21 February 2014 3D real-time measurement system of seam with laser
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Abstract
3-D Real-time Measurement System of seam outline based on Moiré Projection is proposed and designed. The system is composed of LD, grating, CCD, video A/D, FPGA, DSP and an output interface. The principle and hardware makeup of high-speed and real-time image processing circuit based on a Digital Signal Processor (DSP) and a Field Programmable Gate Array (FPGA) are introduced. Noise generation mechanism in poor welding field conditions is analyzed when Moiré stripes are projected on a welding workpiece surface. Median filter is adopted to smooth the acquired original laser image of seam, and then measurement results of a 3-D outline image of weld groove are provided.
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Min-shuang Huang, Min-shuang Huang, Jun-fen Huang, Jun-fen Huang, Zhang Ze, Zhang Ze, } "3D real-time measurement system of seam with laser", Proc. SPIE 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013, 91420U (21 February 2014); doi: 10.1117/12.2054386; https://doi.org/10.1117/12.2054386
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