Bibliografie

Journal Article

A Comment on a Novel Approach for the Registration of Weak Affine Images

: Pattern Recognition Letters vol.34, 12 (2013), p. 1381-1385

: Image registration, Affine transform, Affine subgroups, Weak affine transform, Area-preserving affine transform

: 10.1016/j.patrec.2013.04.024

: http://library.utia.cas.cz/separaty/2013/ZOI/flusser-a comment on a novel approach for the registration of weak affine images.pdf

(eng): In the recent paper (Li and Zhang, 2012) a mapping model of weak affine transform (WAT) was proposed for registering images of flat scenes. We show that such a model may cause inaccuracies when registering images with non-uniform scaling differences, even if they seemingly behave according to this model. Mathematical reason of this is that WAT is neither invertible nor closed. We explain why mapping models forming a group should be preferably used for registration and show some examples of models belonging to affine subgroups.

: JD