Pseudo-haptic Macro Roughness

This is an illusion of macro roughness. Try moving your hand or the cursor over the surface of the half spheres.

マクロな粗さの錯覚です。手やカーソルを半球の表面で動かしてみてください。

References

K. Watanabe and M. Yasumura, “VisualHaptics: Generating haptic sensation using only visual cues,” In Proceedings of the 2008 International Conference on Advances in Computer Entertainment Technology (ACE ‘08), p. 405, 2008. DOI: 10.1145/1501750.1501856.
A. Lécuyer, J.-M. Burkhardt, and C.-H. Tan. “A study of the modification of the speed and size of the cursor for simulating pseudo-haptic bumps and holes”. ACM Transactions on Applied Perception, vol. 5, no. 3, Article 14, 2008. DOI: 10.1145/1402236.1402238