An Efficient Shadow Detection Algorithm and the Direct Surface Rendering Volume Visualisation Model

M. W. Jones

Abstract

Research into volume graphics have lead us to new methods for the voxelisation of meshes and the ultra high quality rendering of volumetric data. Recently it has been reported by us [1] that our method of voxelisation and subsequent rendering can produce images faster than traditional ray tracing methods. In this paper we present in detail the Direct Surface Rendering algorithm and demonstrate how reflections are achieved. We have now extended this rendering method to produce shadows. The extension requires very little extra computation, and allows self-occlusion of objects. The algorithm should be adaptable for more traditional ray tracing, in particular suitable for octree encoded objects, CSG objects and with some precalculation, for most other objects.

Source Materials

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Citation

M. W. Jones, An Efficient Shadow Detection Algorithm and the Direct Surface Rendering Volume Visualisation Model, In Proc. 15th Ann. Conf. of Eurographics (UK Chapter), Norwich, 237-244, 1997

Bibtex

@INPROCEEDINGS{Rendering_Shadows,
  author = {M. W. Jones},
  title = {An Efficient Shadow Detection Algorithm and the Direct Surface Rendering
	Volume Visualisation Model},
  booktitle = {15th Ann. Conf. of Eurographics (UK Chapter), Norwich},
  year = {1997},
  pages = {237--244},
  isbn = {0 952 1097 6 X},
  owner = {Mark},
  url = {http://cs.swan.ac.uk/%7Ecsmark/PDFS/shadows.pdf},
  date={1997-03-26},
}