I-74 Recognition of triangles for perspective projection

概要

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Method to recognize solid objects by triangulation are now used in general. In order to recognize a solid object using picture taken by a camera, it is important to investigate the recognition of the planar contours of several triangles of tetrahedrons which construct the solid object approximately. It has been shown that it is useful to get information for the recognition that all image of triangles in the phothos have the images of their inscribed circles [2], where affine trasformations are used. However it has the problems that camera angles are restricted. In this paper, our purpose is to expand the camera angles, that is, to show that those assigned triangles is possible to be recognized if image tangent points are known on image of its inscribed circles of the triangles. A system of algebraic equations are obtained whose unknown is the angle between the direction of camera viewpoint and the normal of the face of a triangle.
FIT(電子情報通信学会・情報処理学会)推進委員会の論文
2002-09-13