1 / 9

Overview of 3D Object Representation

Overview of 3D Object Representation. 3D Object Representation: Surfaces vs. Solids. Surfaces – Mesh. Group of connected polygons (usually triangles) May not be closed. Surfaces – Subdivision Surface. Coarse mesh & subdivision rule Define smooth surface as limit of sequence of refinements.

kelsie-bridges
Download Presentation

Overview of 3D Object Representation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Overview of 3D Object Representation

  2. 3D Object Representation: Surfaces vs. Solids

  3. Surfaces – Mesh • Group of connected polygons (usually triangles) • May not be closed

  4. Surfaces – Subdivision Surface • Coarse mesh & subdivision rule • Define smooth surface as limit of sequence of refinements Zorin & Schroeder SIGGRAPH99 course notes

  5. Surfaces – Parametric Surface • Tensor product spline patches • Careful constraints to maintain continuity FvDFH Figure 11.44

  6. Surfaces – Implicit Surface • Points satisfying F(x,y,z) = 0 Bill Lorensen SIGGRAPH 99 Course #4 Notes

  7. Solids – Voxels • Uniform grid of volumetric samples • Acquired from CAT, MRI etc.

  8. Solids – BSP Tree • Binary space partition with solid cells labelled • Constructed from polygonal representations

  9. Solids – CSG • Hierarchy of boolean set operations (union, difference, intersect) applied to simple shapes

More Related