What can missing correspondences tell us about 3D structure and motion?

Practically all existing approaches to structure and motion computation use only positive image correspondences to verify the camera pose hypotheses. Incorrect epipolar geometries are solely detected by identifying outliers among the found correspondences. Ambigous patterns in the images are often incorrectly handled by these standard methods. In this work we propose two approaches to overcome such problems. First, we apply non-monotone reasoning on view triplets using a Bayesian formulation. In contrast to two-view epipolar geometry, image triplets allow the prediction of features in the third image. Absence of these features (i.e. missing correspondences) enables additional inference about the view triplet. Furthermore, we integrate these view triplet handling into an incremental procedure for structure and motion computation. Thus, our approach is able to refine the maintained 3D structure when additional image data is provided.

• Type: Conference
• Year: 2008
• Where: CVPR
• Authors: Christopher Zach, Arnold Irschara, Horst Bischof
• Keywords: Additional Image Data, Computer Vision, CVPR 2008, Image Triplets, Motion Computation, Positive Image Correspondences, View Triplet