Development of in situ measurement system for welding deformation using digital cameras
Development of in situ measurement system for welding deformation using digital cameras
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DOI：
10.1179/1362171812y.0000000027
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发表时间：
2012-08
影响因子：
3.3
通讯作者：
M. Shibahara;K. Ikushima;Shinsuke Itoh
中科院分区：
文献类型：
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作者：
M. Shibahara;K. Ikushima;Shinsuke Itoh
利用数码相机，研制了一种不需要特殊设备的三维变形（平面内和平面外变形）测量方法。该方法是一种非接触式测量方法，可以对整个拍摄图像进行顺序测量。此外，由于图像分析是基于图像匹配技术，因此该方法即使在被测变形较大的情况下也适用。此外，由于可以使用所有像素作为测点，因此一次可用的测点数量与相机的有效像素数量相同。本文将该方法应用于强光照条件下弧焊位移的连续测量。通过激光位移计和数字卡尺的三维形状测量系统（lat3d）测量结果的对比，验证了所提方法的定量有效性。
A three-dimensional (3D) deformation (in plane and out of plane deformations) measurement method is developed using digital cameras, which require no special equipment. This method is a non-contact method, and it can sequentially measure over the entire photographed image. Furthermore, since image analysis is based on the technique of image matching, the method is applicable even when the deformation to be measured is large. In addition, since it is possible to use all pixels as measuring points, the number of available measuring points at one time is the same as the number of effective pixels of the camera. In this study, the proposed method is applied to the sequential measurement of displacement under strong lighting levels in arc welding. Through the comparison of the results measured by a 3D shape measurement system (LAT-3D) using a laser displacement gauge and digital caliper, the quantitative validity of the proposed method is also verified.