Shape Analysis and Retrieval. Extended Gaussian Images. Notes courtesy of Funk et al. , SIGGRAPH 2004. Extended Gaussian Image. Represent a model by a spherical function by binning surface normals. Model. Angular Bins. EGI. Subdividing the Sphere. 20 Faces Icosahedron. 80 Faces.
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Extended Gaussian Images
Notes courtesy of Funk et al., SIGGRAPH 2004
All bins have the same area
Different bins have different areas
Missing node where bins are small
Normalize bins by bin area
Princeton Shape Benchmark:(~900 models, ~90 classes)
50 human bipeds
15 desk chairs
13 electric guitars