Istituto di Scienza e Tecnologie dell'Informazione     
Ponchio F., Dellepiane M. Multiresolution and fast decompression for optimal web-based rendering. In: Graphical Models, vol. 88 pp. 1 - 11. Elsevier, 2016.
Limited bandwidth is a strong constraint when efficient transmission of 3D data to Web clients and mobile applications is needed. In this paper we present a novel multi-resolution WebGL based rendering algorithm which combines progressive loading, view-dependent resolution and mesh compression, providing high frame rates and a decoding speed of million of triangles per second in JavaScript. The method is parallelizable and scalable to very large models. The algorithm is based on the local multi-resolution approaches provided by the community, but ad-hoc solutions had to be studied and implemented to provide adequate performances. In particular, a compression mechanism that reached very high compression rate without impact on rendering performance was implemented. Moreover, the data partition strategy was modified in order to be able to load different types of data (i.e. point clouds) and better adapt to the potentials and limitations of web-based rendering.
URL: http://www.sciencedirect.com/science/article/pii/S1524070316300285
DOI: 10.1016/j.gmod.2016.09.002
Subject Multiresolution
Web based 3D rendering
Online 3D
Mesh compression
I.3.5 COMPUTER GRAPHICS. Computational Geometry and Object Modeling
I.3.7 COMPUTER GRAPHICS. Three-Dimensional Graphics and Realism

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