We introduce a dynamic weight moving VR controller for 2d haptic shape rendering using a haptic shape illusion. This allows users to perceive the feeling of various shapes in virtual space with a single controller.
We built a hardware prototype which consists of mechanisms to move weighted objects on a 2d planar space. This consists of two main mechanisms, angular mechanism and weight shifting mechanism.
The angular mechanism enables to open/close two arms by rotating a worm gear drive connected to two worm wheels. These gears are fixed and connected to a PLA casing fabricated by a 3D printer, then both worm wheels are connected to arms. Each weight shifting mechanism also consists of a worm gear and worm wheel, connected to spur gear through a metal shaft then to a rack gear.
In order to evaluate how our prototype can alter shape perception of wielded VR objects, we conducted a user study. Users reported as follows: 'I felt the object shape has significantly changed', 'I felt a strong change in width direction'. These comments suggested that the proposed VR controller successfully renders a wide range of shape perception.
In SIGGRAPH2018, we are presenting demo VR applications using our VR controller (e.g. users can experience fighting against monster using various weapons with a single controller). We are also presenting an improved device based on our hardware which is lightweight and attachable to conventional VR controllers.
Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Taiju Aoki,
Takuji Narumi, Tomohiro Tanikawa and Michitaka Hirose:
Transcalibur : Weight Moving VR Controller for Dynamic Rendering of 2D Shape using Haptic Shape Illusion
SIGGRAPH 2018 Emerging Technologies.
Master Student at the University of Tokyo,
Ph.D Candidate at Hasso Plattner Institute.
Master Student at the University of Tokyo.
Assistant Professor at the University of Tokyo.