David: Discriminant analysis for verification of monuments in image data
In the past few years, several research works have addressed the problems posed by vision-assisted navigation systems. Basically, these systems allow a tourists navigating in an urban environment to take the photograph of a scene and submit it to the navigation system that will recognize what monument is represented in the photograph. However, solutions proposed so far focus on the recognition of approximately planar structures (e.g. building facades) and are inadequate to support the recognition task if the object of interest has a generic 3D structure such as a statue. In this paper we present a model to support the recognition of generic monuments that is based on the information-theoretic notion of mutual information to quantify the saliency of invariant local descriptors. Results are demonstrated on a real-database also in comparison with the baseline method that performs matching without any measure of saliency.