A free paper by Daniel Puckowski is available to download.
In this paper, I present a novel interest point descriptor, coined COIF (Concentric Oval Intensity Features). The descriptor is straightforward to implement and feature matching can be 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.
An example COIFv6 implementation is available at the following GitHub repository: