∗Present address: Instituto de Física Corpuscular, CSIC-Universitat de València, Apartado de Correros 22085, E46071 Valencia, Spain. Partially supported by the Ministerio de Ciencia e Innovación under Grant No. FPA2007-60323, by CPAN (Grant No. CSD200700042), and by the European Commission MRTN FLAVIAnet under Contract No. MRTN-CT-2006-035482. †Speaker. ‡Supported in part by Studienstiftung des...

introduction one of the most important pre-processing steps in optical coherence tomography (oct) is reducing speckle noise, resulting from multiple scattering of tissues, which degrades the quality of oct images. materials and methods the present study focused on speckle noise reduction and edge detection techniques. statistical filters with different masks and noise variances were applied on ...

The evaluation of retinal images is widely used to help doctors diagnose many diseases, such as diabetes or hypertension. Due to the acquisition process, retinal images often have low grey level contrast and dynamic range. This problem may seriously affect the diagnostic procedure and its results. Here we present a new multi-scale method for retinal image contrast enhancement based on the Conto...

the vertex-edge wiener index of a simple connected graph g is defined as the sum of distances between vertices and edges of g. two possible distances d_1(u,e|g) and d_2(u,e|g) between a vertex u and an edge e of g were considered in the literature and according to them, the corresponding vertex-edge wiener indices w_{ve_1}(g) and w_{ve_2}(g) were introduced. in this paper, we present exact form...

This study investigates the potential hazard to vehicles of excessive roadside edge wedge (defined as a wide, deep edge treatment) and develops a safety design countermeasure. Using the Human Vehicle Environment (HVE) simulation tool, a typical driving scenario, road profile, and vehicle and driver behavior were selected to represent high risk situations. Wedge heights and slopes were modeled a...

Image Enhancement is one of the first steps in Image processing. It is a cosmetic procedure, i.e. it does not add any extra information to the original image. It merely improves the subjective quality of the images by working with the existing data and is used for improving the interpretability or perception of information in images for human viewers. In this project, hybrid approach and Log-So...