Content Based Image Retrieval (CBIR) is an application of computer vision and addresses the problem related to retrieval of digital images in large image databases. CBIR uses low level image features for retrieval task and tries to portray users intended results. Relevance Feedback (RF) is a technique for marking retrieved results as relevant or irrelevant by the user. People in the society hav...

This paper focuses on the reconstruction of surfaces of revolution. We propose a method for estimating those surfaces from point clouds. We are more particularly dealing with data coming from one unique laser scanner acquisition; indeed, our approach extensively uses the range image topology. It makes originally use of geometric properties of surfaces of revolution. We firstly get an approximat...

The profile of Navarro, Frenk, and White (the NFW profile), which was derived from the N-body simulations of cold dark-matter halos, is a strong candidate for a galaxy or cluster profile. In order to check the usability of the NFW profile as a first approximation of a galaxy model, we studied the characteristic overdensity and scale radius of galaxies by reproducing the image positions and flux...