Designing the user interface (2nd ed.): strategies for effective human-computer interaction
Designing the user interface (2nd ed.): strategies for effective human-computer interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Physical and Virtual Tools: ActivityTheory Applied to the Design of Groupware
Computer Supported Cooperative Work
Situated Documentaries: Embedding Multimedia Presentations in the Real World
ISWC '99 Proceedings of the 3rd IEEE International Symposium on Wearable Computers
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
Proceedings of the 16th annual ACM symposium on User interface software and technology
The optical tweezers: multiple-point interaction technique
Proceedings of the ACM symposium on Virtual reality software and technology
Interaction Using a Handheld Projector
IEEE Computer Graphics and Applications
Enabling View-Dependent Stereoscopic Projection in Real Environments
ISMAR '05 Proceedings of the 4th IEEE/ACM International Symposium on Mixed and Augmented Reality
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In this study, we introduce a camera-based pointer. A camera-based pointer is a pointer system where a user uses a camera to point at a spot on a screen instead of a laser pointer. In the system, the spot on the screen is located by visual feedback. That is, a cone image is projected on the screen and then it is taken by the camera to send back to the system. Using the visual feedback, the system moves the cone image towards the spot, so that the system will find the center of the cone image right in front of the camera in several iterations. Thereby this system does not require any homographies between the screen and the camera coordinates systems to be made in advance. In addition, a cone image is scaled in a liner gradient so that it is robust for blurring caused by an out-of-focused camera. This robustness enables a user to move around in front of the screen while pointing the camera on it. Finally we demonstrate Ping pong that works with two camera-based pointers in order to show that a camera-based pointer technique is practical.