Creación de Modelos Digitales de Elevaciones a partir de diferentes métodos de interpolación para la determinación de redes de drenaje

The Digital Elevations Models represent an elemtary space information for the study of the relief forms. The obtaining of models of great resolution implies a greater precision and therefore a greater apporach to the reality of the terrestrial morphology. (...)

Monocular-based 3-D seafloor reconstruction and ortho-mosaicing by piecewise planar representation

Photo-mosaicing techniques have become popular for seafloor mapping in various marine science applications. However, the common methods cannot accurately map regions with high relief and topographical variations. Ortho-mosaicing borrowed from photogrammetry is an alternative technique that enables taking into account the 3-D shape of the terrain. A serious bottleneck is the volume of elevation information that needs to be estimated from the video data, fused, and processed for the generation of a composite ortho-photo that covers a relatively large seafloor area. We present a framework that combines the advantages of dense depth-map and 3-D feature estimation techniques based on visual motion cues. The main goal is to identify and reconstruct certain key terrain feature points that adequately represent the surface with minimal complexity in the form of piecewise planar patches. The proposed implementation utilizes local depth maps for feature selection, while tracking over several views enables 3-D reconstruction by bundle adjustment. Experimental results with synthetic and real data validate the effectiveness of the proposed approach

Vince malum a bono: la guerra secreta de mossèn Joan Domènech a la Cerdanya (1939-1949)

Sobre la figura de mossèn Joan Domènech que va ajudar a traspassar fronteres a gent que volia escapar de l'infern nazi