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张祖勋

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期刊论文

Industrial Sheetmetal Parts Measurement by Image Sequence

张祖勋Zuxun Zhang Jianqing Zhang Yongjun Zhang Haitao Wang

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摘要/描述

A novel approach for three-dimensional; reconstructin and measurement of industrial parts with non-metric image sequence is proposed. Non-metric image sequence and CAD-designed data are used as source of information. The strtegy of our approach is to reconstruct and measure the producing imprecision or deformations of industral parts mainly composed of line segments and circles automatically with points and lines extracted from imagery. Principles and results of line segment least squares template matching to extract precie points and lines from imagery are diseussed. Hybrid point-line photogrammetry is adopted to reonstruct industral parts accurately. Circles on the part are reconstructed with known camera parameters from bundle adjustment. The reconstructed CAD model can be used for measurement. Results of real images of several parts are very satifying, which shows a promising potential in automatic 3D reconstruction and measurement of widely existed industrial parts mainly composed of points and lines.

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