We hope you've enjoyed your visit with the mysterious Fire Fairies of Vision Island. If you want to learn more about motion capture, you will have to refer back to the ancient earth archives to find an article by Ramachandran and Inada:

Ramachandran, V.S., & Inada, V. (1985). Spatial phase and frequency in motion capture of random-dot patterns. Spatial Vision, 1, 57-67.