Damien Porquet

Université de Limoges - Faculté des Sciences
83, rue d'Isle, 87000 Limoges (FRANCE)
Mèl : porquet [at]
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Real-Time High Quality View-Dependent Texture Mapping using Per-Pixel Visibility
D.Porquet, J.-M. Dischler, D. Ghazanfarpour
Graphite 2005 - 3rd International Conference on Computer Graphics and Interactive Techniques in Australasia and Southeast Asia
29 November - 2 December 2005, Dunedin, New Zealand
We present an extension of View-Dependent Texture Mapping (VDTM) allowing rendering of complex geometric meshes at high frame rates without usual blurring or skinning artifacts. We combine a hybrid geometric and image-based representation of a given 3D object to speed-up rendering at the cost of a little loss of visual accuracy.
During a precomputation step, we store an image-based version of the original mesh by simply and quickly computing textures from viewpoints positionned around it by the user. During the rendering step, we use these textures in order to map on the fly colors and geometric details onto the surface of a low-polygon-count version of the mesh.
Real-time rendering is achieved while combining up to three viewpoints at a time, using pixel shaders. No parameterization of the mesh is needed and occlusion effects are taken into account while computing on the fly the best viewpoints for a given pixel. Moreover, the integration of this method in common real-time rendering systems is straightforward and allows applying self-shadowing as well as other z-buffer effects.
PDF - 3.9 MB
OpenOffice 2 presentation - 7.4 MB
PowerPoint presentation - 7.6 MB
PDF presentation - 3.9 MB
fig1 fig2
fig3 fig4
Video 1 - Scene composed of 28 dragons
DivX format ; 26 Mb
Low quality version: Video 1 low (5.4 Mb)
Video 2 - Reference viewpoints acquisition
DivX format ; 6 Mb
Low quality version: Video 2 low (3.2 Mb)
Video 3 - Shadow projection
DivX format ; 6.6 Mb
vertex shader
pixel shader