System for on-line 3D measurement of rough natural surfaces

Gerhard Paar; Wolfgang Poelzleitner; A. Bauer

doi:10.1117/12.220918

13 September 1995 System for on-line 3D measurement of rough natural surfaces

Gerhard Paar, Wolfgang Poelzleitner, A. Bauer

Proceedings Volume 2598, Videometrics IV; (1995) https://doi.org/10.1117/12.220918
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

3D reconstruction of highly textured surfaces like those found in roads, as well as unvegetated (rock-like) terrain is of major interest for applications like autonomous navigation, or the 3D modeling of terrain for mapping purposes. We describe a system for automatic modeling of such scenes. It is based on two frame CCD cameras, which are tightly attached to eachother to ensure constant relative orientation. One camera is used for the acquisition of photogrammetrically measure reference points, the other records the surface images. The system is moved from the first position to the next by an operator carrying it. Automatic calibration using the images acquired by the calibration camera permits the computation of exterior orientation parameters of the surface camera. A fast matching method providing dense disparities together with a robust reconstruction algorithm renders an accurate grid of 3D points. We also describe procedures to merge stereo reconstruction results from all images taken, and report on accuracy, computational complexity, and practical experience in a road engineering application.

Citation Download Citation

Gerhard Paar, Wolfgang Poelzleitner, and A. Bauer "System for on-line 3D measurement of rough natural surfaces", Proc. SPIE 2598, Videometrics IV, (13 September 1995); https://doi.org/10.1117/12.220918

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