The idea proposed in this paper is to use a log polar sampling scheme followed by a FFT in order to obtain a rotation and to some degree scale invariant feature descriptor.
The feature vector will be rather short since just the most discriminative part of the FFT is used.
- A short feature vector for image matching: The Log-Polar Magnitude feature descriptor. DJ. Matuszewski, A. Hast, C. Wählby C, IM. Sintorn. PLOS ONE 12(11): e0188496, Journal. pp. 1-12. 2017.
@article{Mat17a, author = {DJ. Matuszewski and A. Hast and C. Wählby and C. Wählby C and IM. Sintorn}, title = {A short feature vector for image matching: The Log-Polar Magnitude feature descriptor}, journal = {PLOS ONE 12(11): e0188496}, pages = {1--12}, year = {2017} }
Anders Hast 