Rzsweep: A New Volume-Rendering Technique for Uniform Rectilinear Datasets

A great challenge in the volume-rendering field is to achieve high-quality images in an acceptable amount of time. In the area of volume rendering, there is always a trade-off between speed and quality. Applications where only high-quality images are acceptable often use the ray-casting algorithm, but this method is computationally expensive and typically achieves low frame rates. The work presented here is RZSweep, a new volume-rendering algorithm for uniform rectilinear datasets, that gives high-quality images in a reasonable amount of time. In this algorithm a plane sweeps the vertices of the implicit grid of regular datasets in depth order, projecting all the implicit faces incident on each vertex. This algorithm uses the inherent properties of a rectilinear datasets. RZSweep is an object-order, back-toront, direct volume rendering, face projection algorithm for rectilinear datasets using the cell approach. It is a single processor serial algorithm. The simplicity of the algorithm allows the use of the graphics pipeline for hardware-assisted projection, and also, with minimum modification, a version of the algorithm that is graphics-hardware independent. Lighting, color and various opacity transfer functions are implemented for giving realism to the final resulting images. Finally, an image comparison is done between RZSweep and a 3D texture-based method for volume rendering using standard image metrics like Euclidian and geometric differences

Inspecció de models anatòmics en un entorn immersiu col·laboratiu: aplicació a formació en anatomia

L'objectiu principal d'aquest treball de fi de grau ha sigut estudiar la viabilitat d'entorns de realitat virtual immersius per inspeccionar models anatòmics de forma col·lectiva en un entorn anàleg al d'una classe.The main objective of this bachelor's thesis has been studying the viability of immersive virtual reality environments to examine anatomic models collectively in an environment analogous to that of a classroom