Study on image acquisition in 3-D sensor system of arc welding pool surface shape using grating projection

Xiaopu Ai; Nansheng Liu; Yiqing Wei; Xian Hu; Sheng Wei; Xiaorui Liu

doi:10.1117/12.838387

30 November 2009 Study on image acquisition in 3-D sensor system of arc welding pool surface shape using grating projection

Xiaopu Ai, Nansheng Liu, Yiqing Wei, Xian Hu, Sheng Wei, Xiaorui Liu

Author Affiliations +

Proceedings Volume 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 750628 (2009) https://doi.org/10.1117/12.838387
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

Detecting 3-D information on welding pool surface shape is difficult due to the arc light interference, high temperature radiation and pool surface specular reflection. The characteristics of mirror like reflection on pool of liquid surface are studied. Besides the way to obtain clear information-rich image of the pool area is discussed under the strong arc light. Because of the strong arc light above the pool will affect the imaging of the relatively weaker laser stripes seriously, we need to choose a suitable shooting angle and shooting distance to achieve well image. According to all these factors, the optimal combination of the sensing structure parameters in theory is deduced. Based on this work, a vision detecting of arc welding pool surface topography system was putted up in our laboratory, also actual measurement was carried out to obtain more clear images of deformation laser stripes in welding pool. This will provide the three-dimensional reconstruction a strong support.

Citation Download Citation

Xiaopu Ai, Nansheng Liu, Yiqing Wei, Xian Hu, Sheng Wei, and Xiaorui Liu "Study on image acquisition in 3-D sensor system of arc welding pool surface shape using grating projection", Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 750628 (30 November 2009); https://doi.org/10.1117/12.838387

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