Keywords: Volume modelling, progressive transmission, multiresolution
This paper presents a technique to carry out progressive transmission of a volume data set using a hierarchical index of the data set. The intermediate data transmitted can be used as a complete representation, allowing the client to perform any computation on the volume and to generate any isosurface. The experiments performed show that a good approximation can be achieved for medical data sets with less than ten per cent of the data transmitted. The hierarchical index used is a compressed BONO index (cell octree), that is also used to speed up the isosurface generation.