Transcalibur

For more information, check the first author’s website.

About #

Humans can estimate the shape of a wielded object through the illusory feeling of the mass properties of the object obtained using their hands. Even though the shape of hand-held objects influences immersion and realism in virtual reality (VR), it is difficult to design VR controllers for rendering desired shapes according to the perceptions derived from the illusory effects of mass properties and shape perception. We propose Transcalibur, which is a hand-held VR controller that can render a 2D shape by changing its mass properties on a 2D planar area.

Shape Perception Model #

We built a computational perception model using a data-driven approach from the collected data pairs of mass properties and perceived shapes. This enables Transcalibur to easily and effectively provide convincing shape perception based on complex illusory effects. Our user study showed that the system succeeded in providing the perception of various desired shapes in a virtual environment.

Application #

Publications #

• Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. 2022. Presenting Morphing Shape Illusion: Enhanced Sense of Morphing Virtual Object with Weight Shifting VR Controller by Computational Perception Model. In IEEE Computer Graphics and Applications, Vol.43(4), pp.81-89, Dec. 2022. https://doi.org/10.1109/MCG.2022.3229018

• Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. 2019. Transcalibur: A Weight Shifting Virtual Reality Controller for 2D Shape Rendering based on Computational Perception Model. In Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems (CHI ’19). Association for Computing Machinery, New York, NY, USA, Paper 11, 1–11. (The first two authors contributed equally to this work.) https://doi.org/10.1145/3290605.3300241 Honorable Mention

• Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. 2019. Demonstration of Transcalibur: A VR Controller that Presents Various Shapes of Handheld Objects. In Extended Abstracts of the 2019 CHI Conference on Human Factors in Computing Systems (CHI EA ’19). Association for Computing Machinery, New York, NY, USA, Paper INT035, 1–4. https://doi.org/10.1145/3290607.3313243

• Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Taiju Aoki, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. 2018. Transcalibur: dynamic 2D haptic shape illusion of virtual object by weight moving VR controller. In ACM SIGGRAPH 2018 Posters (SIGGRAPH ’18). Association for Computing Machinery, New York, NY, USA, Article 29, 1–2. https://doi.org/10.1145/3230744.3230804 SIGGRAPH Student Research Competition Semi-Finalist

• Jotaro Shigeyama, Takeru Hashimoto, Shigeo Yoshida, Taiju Aoki, Takuji Narumi, Tomohiro Tanikawa, and Michitaka Hirose. 2018. Transcalibur: weight moving VR controller for dynamic rendering of 2D shape using haptic shape illusion. In ACM SIGGRAPH 2018 Emerging Technologies (SIGGRAPH ’18). Association for Computing Machinery, New York, NY, USA, Article 19, 1–2. https://doi.org/10.1145/3214907.3214923

Awards and Honors #

• ACM CHI 2019 Honorable Mention, May 2019.
• SIGGRAPH 2018 Student Research Competition Semi-Finalist (First author)

Related Projects #