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In this section some existing calibration approaches are briefly discussed. These can be based on Euclidean or metric knowledge about the scene, the camera or its motion. One approach consists of first computing a projective reconstruction and then upgrading it a posteriori to a metric (or Euclidean) reconstruction by imposing some constraints. The traditional approaches however immediately go for a metric (or Euclidean) reconstruction.


Marc Pollefeys 2002-11-22