Location measurement of circular rod in glass tube
Zhihong Zhou · Modern Machinery · 2009
The buckling of pipe in well is very common in petroleum industry,and it affects the strength of the pipe.In order to analyze the profile of pipe buckling,the experiment on measurement of deformation of the pipe subject to compress in glass tube is considered.In this paper,light propagation path has been analyzed,and geometrical relation between center of actual rod in glass tube and edge of rod in image from a section has been analyzed by pinhole camera model,and line equation through actual rod center of the section has been derived with the edge of rod in image.Combining the research on the edge detect method on photo,position of center of actual rod of the section can be located by two images with different angles.The formulae derived here can be used in experiment of rod buckling in tube.