RayCursor: a 3D Pointing Facilitation Technique based on Raycasting

Marc Baloup1,2, Thomas Pietrzak2, Géry Casiez3
1Univ. Lille, Inria, UMR 9189 - CRIStAL, France, 2Inria Lille, France

This page provides additional material to our CHI '19 paper.

Raycasting is the most common target pointing technique in virtual reality environments. However, performance on small and distant targets is impacted by the accuracy of the pointing device and the user's motor skills. Current pointing facilitation techniques are currently only applied in the context of the virtual hand, i.e. for targets within reach. We propose enhancements to Raycasting: filtering the ray, and adding a controllable cursor on the ray to select the nearest target. We describe a series of studies for the design of the visual feedforward, filtering technique, as well as a comparative study between different 3D pointing techniques. Our results show that highlighting the nearest target is one of the most efficient visual feedforward technique. We also show that filtering the ray reduces error rate. Finally we show the benefits of RayCursor compared to Raycasting and another technique from the literature.

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References

Baloup, M., Pietrzak, T. & Casiez, G. (2019). RayCursor: a 3D Pointing Facilitation Technique based on Raycasting. In proceedings of CHI'19, the 36th Conference on Human Factors in Computing Systems, 101:1-101:12. ACM.