Sign In

Communications of the ACM

ACM TechNews

High-Speed Projectors Power Virtual Air Hockey With Shape-Changing Paddles

View as: Print Mobile App Share: Send by email Share on reddit Share on StumbleUpon Share on Hacker News Share on Tweeter Share on Facebook
MetamorHockey's "paddle," right, and puck.

Researchers from Tohoku University in Japan have developed a version of air hockey that replaces the pucks and paddles with shape-changing virtual projections.

Credit Gizmodo Australia

Scientists at Japan's Tohoku University have invented a virtual version of air hockey that uses shapeshifting virtual projections of paddles and pucks.

The MetamorHockey system replaces the traditional air hockey table surface with a semi-transparent rear-projection screen, which enables an underside projection to show through while a video camera underneath tracks the movements of each player's paddle.

The paddle has an infrared light-emitting diode to facilitate tracking of its position and orientation.

Both projector and camera operate at 420 frames per second; this data is fed to a computer that calculates the puck's movements and trajectories, then passes the information to a projector that refreshes the virtual objects' positions.

From Gizmodo Australia
View Full Article


Abstracts Copyright © 2021 SmithBucklin, Washington, DC, USA


No entries found

Sign In for Full Access
» Forgot Password? » Create an ACM Web Account