On Affine Invariant Descriptors Related to SIFT

@article{Sadek2012OnAI,
  title={On Affine Invariant Descriptors Related to SIFT},
  author={Rida Sadek and Constantinos Constantinopoulos and Enric Meinhardt and Coloma Ballester and Vicent Caselles},
  journal={SIAM J. Imaging Sciences},
  year={2012},
  volume={5},
  pages={652-687}
}
Using a classical result on algebraic invariants of the unimodular group, we present in this paper some basic geometric affine invariant quantities, and we use them to construct some distinctive descriptors for object detection. Although full affine invariance cannot be guaranteed due to noncommutativity of camera blur with affine maps and the domain… CONTINUE READING