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Numerical experiments for segmenting medical images using level sets
Araújo, A.; Comissiong, D. M. G.; Stadler, G.Image segmentation is the process by which objects are separated from background information. Structural segmentation from 2D and 3D images is an important step in the analysis of medical image data. In this technical report, we utilize level set algorithms and active contours without edges to segment two and three-dimensional image data. Besides synthetical data, we also use magnetic resonance images of the hu...
A phenomenological model for desorption in polymers
Comissiong, D. M. G.; Ferreira, J. A.; Oliveira, P. deA phenomenological formulation is adopted to investigate desorption in polymers. The speed of the front is studied and the well-posedeness of the general model is analyzed. Numerical simulations illustrating the dynamics of the desorption process described by the proposed model are included ; Center for Mathematics of University of Coimbra
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