Ismail Oner Sebe

1
ANIMORPH

• Ismail Oner Sebe
• Ilya Eckstein

2
Morphing Animations

• Character Animation Shape Motion
• Shape morphing
• character A ? character B
• Motion Blending
• motion of A ? motion of B
• Can we combine the two? gt ANIMORPH

3
ANIMORPH
1
SHAPE MORPHING
0
1
0
JUMP
WALK
MOTION BLENDING
4
Motion Blending

• Blending motions via blending frequency bands.
  Separate filters for each motion can be used.
• Motion Signal Processing, A. Bruderlin, L.
  Williams. Proceedings of the 22nd annual
  conference on Computer graphics and interactive
  techniques,1995

5
Multitarget Interpolation with Filtering
6
Shape Morphing 3D Skeletons

• Aligning skeleton hierarchies

7
Shape Morphing 3D Skeletons

• Morph trajectories problem
• Linear interpolation of angles and lengths
• Interpolation of Orientation
• Recent Advances in Mesh Morphing, M. Alexa.
  Computer Graphics Forum, 21(2)173--196, 2002
• Perform both simultaneously

8

• DEMO
• TIME

9
Conclusion

• Motion Blending Shape MorphingANIMORPH
• We present a common framework that is able to
  create and sample an animation from 2 different
  animation sequences
• A different perspective to animation (shape
  motion) synthesis
• Different from motion synthesis gt more general
  framework

10
Future Work

• Animorphing multiple (gt2) animations
• Adding constraints
• Is shape morph another motion?

11
Special Thanks

• Andrew Gardner Steven Dutcher - MotView motion
  editing platform.
• Frederic Pighin J.P. Lewis - insightful
  feedback.

12
Presentations

• Motion Blending with Filtering
• Ballet2.bhv to Faint1.bvh
• StartA160, StartB55, Duration85
• PostFilter11, Bands49,100,136,193,241
• Gallop_horse.mch
• Full length
• No filter
• Different curves ?

13
Interpolation of Orientation
Create a matrix of 3D points using given
correspondence list
8 DOF Transform
Transform over time
14
Interpolation of Skeletons
Morph the aligned shapes by interpolating angles
and limb lengths separately
Linear interpolation of the length of the joints
Joint Angles (in quaternion) are interpolated
using spherical linear interpolation