Removing non visible objects in scenes of clusters of particles

El objeto de este trabajo es resolver, en parte, la problemática de la visualización de conglomerados de partículas resultantes de métodos numéricos en la ingeniería. Se han desarrollado dos métodos para la eliminación de partículas no visibles desde cualquier punto de observación de la cámara. Estos se distinguen según el tipo de información disponible: modelos de partículas con información del contorno (malla de superficie) y modelos sin información del contorno (métodos sin mallas). En ambos casos, los resultados son buenos, pues se logra eliminar gran cantidad de partículas que no influyen en la imagen final.The aim of this paper is to partially solve the problem of visualization of clusters of particles resulting from numerical methods in engineering. Two methods for removing non-visible particles from some view point of the camera were developed. These are divided depending on the type of information available: particle systems with contour information (surface mesh) and particle systems without contour information (methods without mesh). In both cases, the results are very good, it is achieved removing large amount of particles that do not affect the final image, permitting interact with the results of numerical methods.Peer Reviewe

Algoritmos de pre y postproceso para métodos numéricos de puntos, métodos de partículas y libres de mallas

In computational mechanics, scientific visualization provides researchers and engineers with tools for studying numerical data. The basis of each of these tools is comprised by scientific visualization techniques. This thesis deals with the necessary changes to conventional scientific visualization techniques in order to visualize the results obtained from the application of particle based methods and mesh-less methods. This is done taking into account the large amount of data that results from the application of these methods and the presence or absence of contour information. Moreover, it is developed a visualization technique for representing micro-cracks and discontinuities, which are the beginning of chains of structural failures. A mesh generation method is selected, given its provided facilities, and it is adapted to generate point clouds for representing volumes and surfaces. For each proposed technique we study the advantages of the data structures used, and show its contributions to computer graphics and to data analysis

Removing non visible objects in scenes of clusters of particles

The aim of this paper is to partially solve the problem of visualization of clusters of particles resulting from numerical methods in engineering. Two methods for removing non-visible particles from some view point of the camera were developed. These are divided depending on the type of information available: particle systems with contour information (surface mesh) and particle systems without contour information (methods without mesh). In both cases, the results are very good, it is achieved removing large amount of particles that do not affect the final image, permitting interact with the results of numerical methods