1P1-M01 完全透視投影型合焦点法による全周物体計測(3次元計測/センサフュージョン)

概要

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An imaging system with a focusing mechanism based on perfect perspective projection was constructed using a movable image sensor to achieve high-quality three-dimensional (3-D) imaging and precise measurement of shapes in close range based on the shape from focus technique. The image sensor was mounted on a single-axis movable table. An aperture stop was located at the object focal point of a fixed image-taking lens. Magnification was proportional to image sensor displacement. This was used to obtain the transversal coordinates of a measurement point. An object was rotated around a fixed axis to be observed by the imaging system from all directions. A method of correctly identifying the rotation axis was presented and ensured that range data obtained at different observation angles could be combined precisely at a standard deviation of 10 μm. The whole shape of a mechanical part such as a screw was measured successfully.
一般社団法人日本機械学会の論文
2007-05-11