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Surface discontinuities in range images

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2 Author(s)
Pajdla, T. ; Dept. of Control Eng., Czech Tech. Univ., Prague, Czech Republic ; Hlavac, V.

The authors present a formulation of discontinuity detection in range images. The emphasis is on roof edge detection which is evaluated as C1 discontinuity strength at every point in the range image. Contrary to other local approaches, it is possible to detect all shapes of C1 discontinuity from one polynomial approximation even when the viewpoint changes. First, the range data are locally approximated by a second-order bivariate polynomial. Second, the 2-D problem of surface discontinuity strength estimation is converted to a 1-D probem along the direction of maximal normal curvature at each point on the surface. Third, C1 is computed by comparing the polynomial approximation of data and the polynomial approximation of the discretized model of the discontinuity

Published in:

Computer Vision, 1993. Proceedings., Fourth International Conference on

Date of Conference:

11-14 May 1993