31 research outputs found
3D texture characterized by accessibility measurements, based on the grey weighted distance transform
3D texture characterized by accessibility measurements, based on the grey weighted distance transform
Fast volume render techniques for interactive analysis
Without graphics hardware, interactive volume rendering is almost impossible with the current generation of computers and software. We describe the implementation of a volume renderer for interactive analysis of confocal images. We propose several techniques to accelerate the rendering of grey-value volumes. We propose to illuminate the volume selectively with ray templates to get a proper shadow cue in the shortest feasible time. In the viewing phase, rendering is distinctively accelerated for four user interactions: (1) a total change by successive adaptive refinement, (2) an unknown change in the view with this refinement strategy combined with suspended interpolation, (3) a known change in the view by recalculating only that part and (4) a view translation by recalculating the uncovered part