Some issues on self-calibration and critical motion sequences
Marc Pollefeys, Luc Van Gool · 2000
This paper is concerned with the problem of selfcalibration. First some general concepts are discussed, then several methods are briefly discussed. In the second part of the paper the problem of critical motion sequences is treated. This problem could cause an important limitation to the practical use of self-calibration. In this context several interesting results are presented. \t 18486 self-calibration, critical motion sequences, absolute conic, ambiguous reconstruction. 1. INTRODUCTION Since it became clear that it was possible to obtain a projective reconstruction (i.e. a reconstruction determined up to an arbitrary projective transformation) from a set of uncalibrated images of a scene [4, 7], researchers have tried to obtain ways to upgrade this reconstruction to a metric one (i.e. determined up to an arbitrary euclidean transformation and a scalefactor). In general three types of constraints could be applied to achieve this: scene constraints, camera motion constrai...