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Compression-domain Seamless Multiresolution Visualization of Gigantic Meshes on Mobile Devices

Marcos Balsa Rodriguez, Enrico Gobbetti, Fabio Marton, and Alex Tinti

June 2013

Abstract

We present a software architecture for distributing and rendering gigantic 3D triangle meshes on common handheld devices. Our approach copes with strong bandwidth and hardware capabilities limitations in terms with a compression-domain adaptive multiresolution rendering approach. % The method uses a regular conformal hierarchy of tetrahedra to spatially partition the input 3D model and to arrange mesh fragments at different resolution. We create compact GPU-friendly representations of these fragments by constructing cache-coherent strips that index locally quantized vertex data, exploiting the bounding tetrahedron for creating local barycentic parametrization of the geometry. For the first time, this approach supports local quantization in a fully adaptive seamless 3D mesh structure. For web distribution, further compression is obtained by exploiting local data coherence for entropy coding. % At run-time, mobile viewer applications adaptively refine a local multiresolution model maintained in a GPU by asynchronously loading from a web server the required fragments. CPU and GPU cooperate for decompression, and a shaded rendering of colored meshes is performed at interactive speed directly from an intermediate compact representation using only 8bytes/vertex, therefore coping with both memory and bandwidth limitations. % The quality and performance of the approach is demonstrated with the interactive exploration of gigatriangle-sized models on common mobile platforms.

Reference and download information

Marcos Balsa Rodriguez, Enrico Gobbetti, Fabio Marton, and Alex Tinti. Compression-domain Seamless Multiresolution Visualization of Gigantic Meshes on Mobile Devices. In Proc. ACM Web3D International Symposium. Pages 99-107, June 2013. ACM Press. New York, NY, USA.

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Bibtex citation record

@InProceedings{Balsa:2013:CDS,
    author = {Marcos {Balsa Rodriguez} and Enrico Gobbetti and Fabio Marton and Alex Tinti},
    title = {Compression-domain Seamless Multiresolution Visualization of Gigantic Meshes on Mobile Devices},
    booktitle = {Proc. ACM Web3D International Symposium},
    organization = {ACM Press},
    pages = {99--107},
    publisher = {New York, NY, USA},
    month = {June},
    year = {2013},
    abstract = { We present a software architecture for distributing and rendering gigantic 3D triangle meshes on common handheld devices. Our approach copes with strong bandwidth and hardware capabilities limitations in terms with a compression-domain adaptive multiresolution rendering approach. % The method uses a regular conformal hierarchy of tetrahedra to spatially partition the input 3D model and to arrange mesh fragments at different resolution. We create compact GPU-friendly representations of these fragments by constructing cache-coherent strips that index locally quantized vertex data, exploiting the bounding tetrahedron for creating local barycentic parametrization of the geometry. For the first time, this approach supports local quantization in a fully adaptive seamless 3D mesh structure. For web distribution, further compression is obtained by exploiting local data coherence for entropy coding. % At run-time, mobile viewer applications adaptively refine a local multiresolution model maintained in a GPU by asynchronously loading from a web server the required fragments. CPU and GPU cooperate for decompression, and a shaded rendering of colored meshes is performed at interactive speed directly from an intermediate compact representation using only 8bytes/vertex, therefore coping with both memory and bandwidth limitations. % The quality and performance of the approach is demonstrated with the interactive exploration of gigatriangle-sized models on common mobile platforms. },
    url = {http://vic.crs4.it/vic/cgi-bin/bib-page.cgi?id='Balsa:2013:CDS'},
}