Pointing into remote 3D environments

Robert Ulichney; Matthew Gaubatz

doi:10.1117/12.838640

27 January 2010 Pointing into remote 3D environments

Robert Ulichney, Matthew Gaubatz

Proceedings Volume 7542, Multimedia on Mobile Devices 2010; 75420I (2010) https://doi.org/10.1117/12.838640
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States

Abstract

In anticipation of the proliferation of micro-projectors on our handheld imaging devices, we designed and tested a camera-projector system that allows a distant user to point into a remote 3D environment with a projector. The solution involves a means for locating a projected dot, and for adjusting its location to correspond to a position indicted a remote user viewing the scene through a camera. It was designed to operate efficiently, even in the presence of camera noise. While many camera-projector display systems require a calibration phase, the presented approach allows calibration-free operation. The tracking algorithm is implemented with a modified 2D gradient decent method that performs even in the presence of spatial discontinuities. Our prototype was constructed using a standard web-camera and network to perform real-time tracking, navigating the projected dot across irregularly shaped and colored surfaces accurately. Our tests included a camera-projector system and client on either side of the Atlantic Ocean with no loss of responsiveness.

Citation Download Citation

Robert Ulichney and Matthew Gaubatz "Pointing into remote 3D environments", Proc. SPIE 7542, Multimedia on Mobile Devices 2010, 75420I (27 January 2010); https://doi.org/10.1117/12.838640

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KEYWORDS

Cameras

Projection systems

Imaging systems

Calibration

Detection and tracking algorithms

Prototyping

3D image processing

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