{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

21-meshessubdivision

# 21-meshessubdivision - Class Calendar Meshes/Subdivision...

This preview shows pages 1–4. Sign up to view the full content.

1 Meshes/Subdivision Lecture 21 CPSC 578/478 Spring 2005 Meshes Representation Processing Subdivision Surfaces detour to fractals revisit parametric surfaces Class Calendar: April 6: assignment #4 topic/teams due TODAY April 11: assignment #4 short proposal due April 13: Quiz #2 April 18: assignment #4 long proposal due April 20: assignment #4 5 min oral proposal/preliminary results May 10: assignment #4 code, executable report due QUIZ #2 Material covered: Lectures from Feb. 16 to Apr. 11 (inclusive) Like last time: Can bring one 8.5 x 11 inch paper Study Guide will be posted on Web on Sunday Course Syllabus I. Image processing II. Rendering III. Modeling IV. Animation V. Advanced Topics Image Processing Modeling Animation Rendering Modeling How do we ... Create 3D objects? Store 3D objects? Use 3D objects? Different methods for different object representations In different phases (creation, storage, use) the same object may be represented in different ways.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 3D Object Representations Raw data Point cloud Range image Polygon soup Surfaces Mesh Subdivision Parametric Implicit Solids Voxels BSP tree CSG Sweep High-level structures Scene graph Skeleton Application specific implicits Volume rendering Ray acceleration Assignment #3 3D Object Representations Raw data Point cloud Range image Polygon soup Surfaces Mesh Subdivision Parametric Implicit Solids Voxels BSP tree CSG Sweep High-level structures Scene graph Skeleton Application specific 9 Polygonal (Triangle) Meshes Creation Parametric/Implicit Conversion Scanners Representation Winged Edge Geometric Processing Compression Simplification Smoothing 10 Another source of Meshes: 3D scanning Examples of types: Silhouette -- inexpensive Triangulation – “small” objects Time of flight – “large” objects REVIEW Polygon Meshes Mesh Representations Independent faces Vertex and face tables Adjacency lists Winged-Edge Independent Faces Each face lists vertex coordinates Redundant vertices No topology information
3 Vertex and Face Tables Each face lists vertex references Shared vertices Still no topology information Adjacency Lists Store all vertex, edge, and face adjacencies Efficient topology traversal Extra storage Partial Adjacency Lists Can we store only some adjacency relationships and derive others?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern