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Reconstruction of 3D lines from a single axial catadioptric image using cross-ratio

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2 Author(s)
Perdigoto, L. ; Dept. of Electr. & Comput. Eng., Univ. of Coimbra, Coimbra, Portugal ; Araujo, H.

It has been shown, in previous work, that the 3D position of a line can be reconstructed from a single image in vision systems that do not possess a single viewpoint. We present a new method that, in a non-central axial catadioptric system, can achieve line spacial reconstruction from 3 or more image points, given the distance ratio of 3 points in the line (a fair assumption in, for example, structured environment with repetitive architectural features). We use cross-ratio as an invariant to constrain the line localization and perform the reconstruction from a set of image points through non-linear optimization. Experimental results are presented.

Published in:

Pattern Recognition (ICPR), 2012 21st International Conference on

Date of Conference:

11-15 Nov. 2012