Proceedings: GI 2003

Comparing ExoVis, Orientation Icon, and In-Place 3D Visualization Techniques

Melanie Tory, Colin Swindells

Proceedings of Graphics Interface 2003: Halifax, Nova Scotia, Canada, 11 - 13 June 2003, 57-64

DOI 10.20380/GI2003.07

  • BibTeX

     title = {Comparing ExoVis, Orientation Icon, and In-Place {3D} Visualization Techniques},
     author = {Melanie Tory and Colin Swindells},
     booktitle = {Proceedings of the Graphics Interface 2003 Conference, June 11-13, 2003, Halifax, Nova Scotia, Canada},
     organization = {CIPS, Canadian Human-Computer Communication Society},
     publisher = {Canadian Human-Computer Communications Society and A K Peters Ltd.},
     issn = {0713-5424},
     isbn = {1-56881-207-8},
     location = {Halifax, Nova Scotia},
     url = {},
     year = {2003},
     month = {June},
     pages = {57--64}


We present a novel algorithm for simultaneous visual hull reconstruction and rendering by exploiting off-the-shelf graphics hardware. The reconstruction is accomplished by projective texture mapping in conjunction with the alpha test. Parallel to the reconstruction, rendering is also carried out in the graphics pipeline. We texture the visual hull view-dependently with the aid of fragment shaders, such as nVIDIA's register combiners. Both reconstruction and rendering are done in a single rendering pass. We achieve frame rates of more than 80 fps on a standard PC equipped with a commodity graphics card. The performance is significantly faster than that of previously reported similar systems.