1. Hand Motion Capture Dr. Midori Kitagawa
School of Arts, Technology and Emerging Communication
University of Texas at Dallas

2. Hand Anatomy
The base of carpals attach to the arm (the radius and the ulna)
Metacarpals allow the hand to ‘cup’.

3. Hand Anatomy
Each finger has three phalanges, except for the thumb which has two.
Metacaropophalangeal (MCP) joints are biaxial and has two DOF rotation.
Other joints between phalanges have one DOF rotation.

4. Hand Anatomy
Thumb’s Carpometacarpal (CMC) joint has two DOF rotation and allows the thumb to rotate and face the other fingers.

5. Finger capture is hard with an optical system because
of occlusion
markers get too close to each other

6. Hand capture with an optical system
Mitten – allows a hand to grasp
Mitten with an independent thumb
Stretchable mitten – allows fingers to spread.

7. Hand capture with an optical system
Smaller markers
close-up camera setup

8. Finger tracking (capture)
Often done with data gloves

9. Finger tracking
Leap Motion