ESTIMATING TENSORS FOR MATCHING OVER MULTIPLE VIEWS

In this paper we give purely geometric derivations of the constraints between point and line correspondences in multiple views of a static f ield. The analysis is carried out using geometric algebra, a system wh ich provides a useful tool in many computer vision applications. It is shown that with a straightforward geometric interpretation it is simp le to derive the degrees of freedom of such tensors and to understand their structure. Given such information, minimal parametrizations of t he tensors are possible. Such parametrizations may be useful for estim ation of the tensors and subsequent matching of points.