Fig. 7: Applications of the hand tracking system.

a Application of virtual number pad typing of five-digit number (top) and arithmetic operation (bottom). b Real world environment (i) and twin virtual environment (Blender) (ii) for real-time virtual shadowgraphy. (iii) Examples of virtual shadowgraphy showing the real hand and the shadow (left) and the virtual hand and shadow (right). c Teleoperation of an anthropomorphic robot hand (Allegro hand, Wonik Robotics) for three dexterous manipulations tasks: repositioning and grasping a ball, scrolling a mouse, and rotating a volume knob.