mr-unity

Unity/C# implementation of the dissertation: “Motion Retargeting Preserving Spatial Relationship”

• Motion retargeting algorithm that preserves the distance and orientation relationship of the hands with the body surface.
• Participants of a perceptual evaluation found that retargeted animations with the proposed method better matched the original motions.

Available at: https://bit.ly/3lfh0FQ

Rodolfo Luis Tonoli

Supervisor: Profa. Dra. Paula Dornhofer Paro Costa

Work plan

BVH File (utils)

• Read
• Write
• Animation and joints data structure
• Draw bvh file animation (source)

Motion Retargeting (chapter 3)

• Initial Motion Retargeting (3.1)
  • Skeleton map (3.1.2)
    • Source
    • Target
    • Draw skeleton map
  • Motion retargeting aligning bones (3.1.3)
  • Motion retargeting applying global rotation (3.1.3)
  • Solve root translation (3.1.4)
• Spatial relationship encoding (3.2)
  • Read and draw source surface calibration (3.2.1)
  • Read and draw target surface calibration (3.2.1)
  • Computing egocentric coordinates (3.2.2)
    • Reference point and displacement vector
    • Importance orthogonality and proximity
    • Kinematic path normalization
    • Relative joints orientation
    • Draw coords
• Pose adaptation ,i.e., motion retargeting (3.3)
  • Compute target positions (3.3.1)
    • Kinematic path
    • Normalization factor
    • New displacement vectors and target reference points
    • Compute target animation's joint positions
    • Draw coords
    • Pose adjustment with IK (3.3.2)
      • Draw old and new joint positions and end effectors' target
    • Adjust joint orientation (3.3.3)
      • Draw old and new joint orientation

Other cool(?) things

- Add other performer's animations as source

- Add different characters as target