Fast hierarchical stereo reconstruction

Gerhard Paar; A. Almer

doi:10.1117/12.169849

1 March 1994 Fast hierarchical stereo reconstruction

Gerhard Paar, A. Almer

Proceedings Volume 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics; (1994) https://doi.org/10.1117/12.169849
Event: Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, 1993, Zurich, Switzerland

Abstract

Three dimensional reconstruction of alpine terrain based on stereoscopic views from remote line scanners like SPOT requires robust and fast methods that find correspondences between homologue scene points in the stereo images. This matching of a large number of corresponding pairs of points is the most crucial step in the processing chain, both in computational effort and demands on robustness and accuracy. We propose a novel method coming from statistical pattern recognition that utilizes the advantages of hierarchical image representations. It is verified with a SPOT stereo pair. A comparison with the traditional gray- level correlation based matching philosophy shows better accuracy performance, while the decrease factor of necessary computational effort is of several orders of magnitude. A final discussion lists problems and tradeoffs that arise for the matching step, especially in alpine terrain.

Citation Download Citation

Gerhard Paar and A. Almer "Fast hierarchical stereo reconstruction", Proc. SPIE 2252, Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, (1 March 1994); https://doi.org/10.1117/12.169849

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