(1) (2)where , and are, respectively, the gradient and Hessian matrices of u with respect to the space variable ; is a bounded domain (typically a square) with boundary ;…

with in image , e.g. based on computing the cornerness of each pixel (see [5]). At this stage each feature point is typically assigned with some kind of a descriptor…

, Isabel N. Figueiredo1  , Carlos Graca2 and Gabriel Falcao2 (1) CMUC, Department of Mathematics, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal (2) Instituto de Telecomunicações, Department of Electrical and Computer…

order, where d and n are the number of thresholds and histogram bins respectively. It is computationally expensive to calculate the results for . One important issue is to define…

, plays a fundamental role to the TB quality. On the other hand, the connectivity of the trabecular bone network, which can be estimated, for instance, through the Euler-Poincaré characteristic,…

) colour spaces and additionally by the loss of colourfulness (). 1 Introduction True colour images acquired by a camera contain only a small subset of all possible 16.7 million colours….

. From a mechanical point of view, the most intense work is performed along the pattern from point 2 to point 3, that is, along the systolic phase, when pressures…

Fig. 1 Some shapes of legs for which it is easy to infer body direction The first one is the inflections of the knees. When a leg is well separated…