1166

Simple dynamic LOD for geometry images

Benjam'{i}n Hernandez, Isaac Rudomin
ITESM – CEM, Computer Science Department
In GRAPHITE ’06: Proceedings of the 4th international conference on Computer graphics and interactive techniques in Australasia and Southeast Asia (2006), pp. 157-163.

@conference{hernandez2006simple,

   title={Simple dynamic lod for geometry images},

   author={Hern{‘a}ndez, B. and Rudomin, I.},

   booktitle={Proceedings of the 4th international conference on Computer graphics and interactive techniques in Australasia and Southeast Asia},

   pages={157–163},

   isbn={1595935649},

   year={2006},

   organization={ACM}

}

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We present a new approach for dynamic LOD processing for geometry images (GIs) in the graphics processing unit (GPU). A GI mipmap is constructed from a scanned 3D model, then a mipmap selector map is created from the camera position’s information and the GI-mipmap. Using the mipmap selector map and the current camera position, some parts of the GI mipmap are discarded using a one-pass shader program that selects the mipmap level that must be displayed and calculates backface culling. Since our method does not require any extra spatial data structure, conceptually it is very simple. Since LOD selection is a one pass algorithm performed on the GPU, it is also fast.
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