Sparse features have been successfully used in shape retrieval, by encoding feature descriptors into global shape signatures. We investigate how sparse features based on saliency models affect retrieval and provide recommendations on good saliency models for shape retrieval. Our results show that randomly selecting points on the surface produces better retrieval performance than using any of th...

It has previously been proved that the lowest order supersymmetric WKB approximation reproduces the exact bound state spectrum of shape invariant potentials. We show that this is not true for a new, recently discovered class of shape invariant potentials and analyse the reasons underlying this breakdown of the usual proof. 1 Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005,India.

The Active Shape and Appearance models are used in a variety of instances to effectively model both the shape and appearance of an image in a statistical manner. This project examines the construction of each model and its combined model. Furthermore, the robustness of the model is examined when reconstructing images from outside of its training database and reasons are given for its failure.

This paper describes the reasons and methods for parameterization of samples burned by a laser beam. At the beginning, it gives information about data acquisition and description. In the main part, the paper summarizes the basic set of parameters which describe the shape of a pulse. From these parameters the basic shape is generated according to a mathematical description. The method of sample ...

in this work, we report synthesis of silver nanoplates by a simple reduction process of silver nitrate in the presence of polyvinyl alcohol (pva) and n,n'-dimethyl formamide (dmf). the characterization of the samples were carried out using x-ray diffraction (xrd), transmission-electron microscopy (tem) and uv-vis spectroscopy. absorption spectra of the nanoplates in comparison with that of...