1. Human Figure Animation
CSE 3541
Matt Boggus

2. Virtual Human Representation
Additional geometric modeling topics
Face modeling and animation
Hair
Cloth

3. Body Modeling - Geometry
Polygonal representations

4. Body Modeling - Geometry

5. Body Modeling - Geometry
Subdivision surfaces ; CSE 5543 – geometric modeling

6. Split

7. Animation– Rigid Links
Hierarchical animation
Use FK or IK to animate
Interpolate between key frames

8. Facial animation Parameterized facial attributues Blend shapes
Muscle models
surface muscles
deep muscles
Performance (or data) driven
instrumented (mocap system)
video capture

9. Parameterized Facial features
Also see

10. Interpolate between 3D models
Facial blend shapes
Interpolate between 3D models
Another (older) example

11. Facial muscle model

12. Surface muscle model
Geometry-based Muscle Modeling for Facial Animation
Kolja K¨ahler J¨org Haber Hans-Peter Seidel

13. Hair and fur

14. MODELING, ANIMATION, AND RENDERING
Hair
Complexity
100,000 strands
Collisions
Populate head with hair
Shadowing
Design hairstyle
Reflections
Animate hair
Hair types
STRANDS AND HAIR
MODELING, ANIMATION, AND RENDERING
SIGGRAPH 2007 Course Notes

15. Hair - mesh

16. Hair – linkages and springs

17. Hair – particle tracing/strands
Figures from

18. Hair – Hierarchy
A Survey on Hair Modeling: Styling, Simulation, and Rendering
Kelly Ward, Florence Bertails, Tae-Yong Kim, Stephen R. Marschner, Marie-Paule Cani, and Ming C. Lin,

19. Cloth

20. “Techniques for Animating Cloth”
M. Yalcin, C. Yildiz

23. Total energy = repel + stretch + shear + bend + gravity

29. Additional Slides

30. Smooth Geometry
Implicit surfaces – geometry exists where function evaluates to 0
Metaballs example
Raycast or Marching Cubes to construct geometry

31. Fur rendering
Real-Time Fur over Arbitrary Surfaces

32. Fur

33. Reaching and grasping

34. Modeling the Arm
Also used is DoF

35. Modeling the Arm
Determine plane of motion (3 DoF)
Use a 1-1 DoF arm

36. Modeling the Hand

37. Grasping Grasp planning for digital humans
Faisal Amer Goussous, U. of Iowa

38. Locomotion

39. Anatomy of the Walk

40. Anatomy of the Run

41. Ankle and Toe bend