In the below GitHub repository is an example Eclipse project for a novel rotation-invariant interest point descriptor, coined COIF (Concentric Oval Intensity Features). The descriptor is straightforward to implement and feature matching is time efficient. COIF may be used to detect rotated images and may be used for image stitching in panorama applications. COIF demonstrates the feasibility of using luminance histograms for feature matching.
https://github.com/puckowski/coif
