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Rotation and Lighting Invariant Template Matching

  • Kimmo Fredriksson
  • Veli Mäkinen
  • Gonzalo Navarro
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2976)

Abstract

We address the problem of searching for a two-dimensional pattern in a two-dimensional text (or image), such that the pattern can be found even if it appears rotated and brighter or darker than its occurrence. Furthermore, we consider approximate matching under several tolerance models. We obtain algorithms that are almost worst-case optimal. The complexities we obtain are very close to the best current results for the case where only rotations, but not lighting invariance, are supported. These are the first results for this problem under a combinatorial approach.

Keywords

Median Vote Pattern Cell Approximate Match Text Center Text Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Kimmo Fredriksson
    • 1
  • Veli Mäkinen
    • 2
  • Gonzalo Navarro
    • 3
  1. 1.Department of Computer ScienceUniversity of Joensuu 
  2. 2.Department of Computer ScienceUniversity of Helsinki 
  3. 3.Center for Web Research, Department of Computer ScienceUniversity of Chile 

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