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Academic Models

These are the standard test models used throughout the computational geometry and computer graphics literature — scanned or synthetic surfaces chosen for specific geometric challenges (sharp features, high genus, curvature variation, thin structures). Several are already familiar from elsewhere in this book, notably the Stanford bunny, and most of the remaining candidates below are drawn from the same general source: Alec Jacobson's common-3d-test-models repository, already cited on the bunny page. The page also collects academic models that are not surface-scan test cases. A representative volume element is one such model. It comes from the micromechanics literature rather than computer graphics.

The table below tracks candidate models and their status. "Planned" entries have no worked example yet — they are a roadmap, not a claim that the model or a download link is already in the repository.

ModelDescriptionStatus
Stanford Bunnyscanned rabbit figurine; sharp folds, ears, a few holesSee Remesh: Stanford Bunny
Utah Teapotcanonical synthetic test surfacePlanned
Stanford Armadilloscanned figure; high genus-0 detail, thin limbsPlanned
Stanford Dragonscanned figure; fine surface detail at scalePlanned
Fandisksynthetic CAD-like surface with sharp creasesPlanned
Rocker Arm / Bimbascanned mechanical-part test modelsPlanned
SuzanneBlender's low-poly monkey head; common regression casePlanned
Representative Volume Element (RVE)unit cube with three interior spherical poresSee Representative Volume Element (RVE)

Stanford Bunny

  1. Download the stanford-bunny.stl model from Remesh: Stanford Bunny.

#TODO: [Image of original tesselation]

  1. Remesh the stl
# TODO: add appropriate remesh command, e.g.,
automesh remesh -i stanford_bunny.stl -o bunny_adaptive.stl adaptive --minimum 0.002 --maximum 0.040 -n 25 -t 0.02

#TODO: Image of the updated tesselation

  1. Create an all-hexahedral volume mesh from the STL surface
automesh mesh hex ... # TODO finish exact specification

#TODO: Images of the resulting hex mesh, including cut-through surfaces exposing interior adaptivity.

  1. Metrics

#TODO

  • Node count, element count
  • Four histograms showing quality measures: Max Edge Ratio, Min Scaled Jacobian, Max Skew, Element Volume