Scale & Affine Invariant Interest Point Detectors

Title:Scale & Affine Invariant Interest Point Detectors
Author: KRYSTIAN MIKOLAJCZYK AND CORDELIA SCHMID
Date of Publication: January 22, 2004

The paper describes two approaches for scale and affine invariant interest point detection. The scale invariant interest point detector, Harris-Laplace detector, combines the Harris detector with automatic scale selection. The algorithm involves a multi-scale point detection and an iterative selection of the scale and the location. The affine invariant interest point detector is initialized by the multi-scale Harris detector. Compute integration and differentiation scale to obtain shape matrix for each interest point. Finally, converge to a local structure in the iterative procedure.

What a pity is that there is a trade off between scale detection and affine detection because of different effects of the two kinds of detector.