1. Computer Animation Algorithms and Techniques
Figure Animation
Rick Parent
Computer Animation

2. 3D Virtual Humans Computer Games Virtual Reality Avatars Films
Education
Rick Parent
Computer Animation

3. 3D Virtual Humans Realistic - physical simulation or motion capture
Controllable - real-time by using motion databases
Autonomous - <condition>-<action> rule based activity
Cost effective - hundreds, thousands of ‘extras’ possible
Suspendable physics - synthetic stunt doubles
Safe - can simulate dangerous activities
Rick Parent
Computer Animation

4. Virtual Human Representation
Modeling body to support movement
Special purpose programming for common body motions: reaching, walking, etc.
Physically based coverings and accessories:
clothing and hair
Rick Parent
Computer Animation

5. Virtual Human Simulations
Jessica Hodgins - Georgia Tech
Rick Parent
Computer Animation

6. film: Marilyn Monroe Daniel & Nadia Thalmann Rick Parent
Computer Animation

7. Cartoons
Rick Parent
Computer Animation

8. Final Fantasy (movie)
Rick Parent
Computer Animation

9. Tron: Legacy
Rick Parent
Computer Animation

10. Virtual Human Representation
Robotics -> Rigid links
Human anatomy -> layered approach
Rick Parent
Computer Animation

11. Hierarch of rigid links
Rick Parent
Computer Animation

12. University of Utah - Barry Wessler
Rick Parent
Computer Animation

13. Layered approach Robotics -> Rigid links -> ‘skeleton’
Internal structure
human skeleton
musculature: muscles & tendons
fatty tissue
Outer layer: skin
deformable by changes to internal structure
Rick Parent
Computer Animation

14. Layered approach
Rick Parent
Computer Animation

15. Layered approach 1. articulation 2. rigid configuration
3. muscle reaction
4. deforms skin vertices
Rick Parent
Computer Animation

16. Virtual Human Representation
Body surface geometry:
polygonal representations
patch representations
subdivision surfaces
implicit surfaces
Rick Parent
Computer Animation

17. Geometry Digitize Sense and record actual object geometry Design
Create according to some user criteria
Rick Parent
Computer Animation

18. Special purpose - standard motions
Locomotion: walking & running
Reaching & grasping
Balance
Gestures
Facial animation - expressions
Lip sync animation
Rick Parent
Computer Animation

19. Reaching Models for the arm The shoulder joint The hand
Coordinated movement
Reaching around obstacles
Considering strength
Rick Parent
Computer Animation

20. Modeling the Arm
Rick Parent
Computer Animation

21. Reaching in a plane
Rick Parent
Computer Animation

22. Reaching in a plane
Rick Parent
Computer Animation

23. Modeling the Shoulder
Rick Parent
Computer Animation

24. Modeling the Hand
Rick Parent
Computer Animation

25. Grasping with simplified hand
Rick Parent
Computer Animation

26. Grasping - coordinated movement
Rick Parent
Computer Animation

27. Reaching
Rick Parent
Computer Animation

28. Walking Walk cycle v. run cycle The mechanics of locomotion
Pelvic transport
Pelvic rotation
Pelvic list
Knee flexion
Ankle and toe joints
Rick Parent
Computer Animation

29. Anatomy of the Walk
Rick Parent
Computer Animation

30. Anatomy of the Run
Rick Parent
Computer Animation

31. Kinematics of the Walk
Rick Parent
Computer Animation

32. Kinematics of the Walk
Rick Parent
Computer Animation

33. Kinematics of the Walk
Rick Parent
Computer Animation

34. Kinematics of the Walk
Rick Parent
Computer Animation

35. Kinematics of the Walk
Rick Parent
Computer Animation

36. Kinematics of the Walk
Rick Parent
Computer Animation

37. Kinematics of the Walk
Rick Parent
Computer Animation

38. Walk Data
Rick Parent
Computer Animation

39. Walk Data
Rick Parent
Computer Animation

40. Walk Data
Rick Parent
Computer Animation

41. Walk Data
Rick Parent
Computer Animation

42. Walk Data
Rick Parent
Computer Animation

43. Using Dynamics in the Walk
Rick Parent
Computer Animation

44. Using Dynamics in the Walk
Rick Parent
Computer Animation

45. Using Dynamics in the Walk
Rick Parent
Computer Animation

46. Dressing the Figure Cloth and clothing Simple draping Clothes
Modeling dynamics
Collision detection and response
Rick Parent
Computer Animation

47. Simple draping - catenary curve
Rick Parent
Computer Animation

48. Simple draping - catenary curve
Rick Parent
Computer Animation

49. Simple draping - catenary curve
Rick Parent
Computer Animation

50. Simple draping - catenary curve
Rick Parent
Computer Animation

51. Cloth - spring mesh
Rick Parent
Computer Animation

52. Cloth - spring mesh
Rick Parent
Computer Animation

53. Cloth - spring mesh
Rick Parent
Computer Animation

54. Clothes Constant collisions & contact
High resolution to get wrinkles, folds, fit
Often non-uniform
Issues (accuracy v. computation):
integration technique
collision detection
collision response
Rick Parent
Computer Animation

55. Clothes: Nadia Thalmann
Rick Parent
Computer Animation

56. Clothes: Huamin Wang
Rick Parent
Computer Animation

57. Hair Complexity: 100,000 individual strands
Taxonomy: Caucasian, Asian, African
Rigid
Mike Altman
Rick Parent
Computer Animation

58. Hair: semi-transparent texture
C. Koh and Z. Huang
Rick Parent
Computer Animation

59. Hair - flexible stands Springs v. Articulated linkages
Hierarchical grouping: strands, clusters, layers
K. Ward, M. Lin, J. Lee, S. Fisher, D. Macri
Rick Parent
Computer Animation

60. Hair http://woody.cghub.com/images/page:2/ Rick Parent
Computer Animation