Title :
A Portable Projector Extended for Object-Centered Real-Time Interactions
Author :
Siriborvornratanakul, Thitirat ; Sugimoto, Masanori
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
With the recent growth in projection technologies, interactive applications using portable projectors have received attention from research communities. However, almost all applications are limited to controller-centered interactions and few pay attention to the existence of other objects found in an environment. In this paper, we propose an object-centered interactive system using a single self-contained device. Physical objects are integrated into the system so virtual objects projected by a projector can respond to them in a realistic manner. The device consists of a portable projector, a FireWire camera, a motion sensor and a VGA splitter. A computational framework for the system is presented in the paper. We focus on the three fundamental requirements of the system and their solution. First, a projector and a camera were geometrically calibrated in real time using a motion sensor. Physical objects were then identified and tracked using particle filters. Finally, virtual information was projected using a nonintrusive projection technique. Two basic programs were implemented as proofs of concept, and experiments were conducted to evaluate the accuracy and speed of the proposed system.
Keywords :
human computer interaction; interactive devices; optical projectors; FireWire camera; VGA splitter; interactive system; motion sensor; nonintrusive projection technique; object-centered real-time interactions; particle filters; portable projectors; projection technologies; single self-contained device; Calibration; Cameras; Clouds; Computer vision; Cost function; Image edge detection; Image reconstruction; Interpolation; Object detection; Uncertainty; multiple-target tracking using particle filters; nonintrusive projection; object-centered interaction; portable projector; real-time projector-camera geometric calibration;
Conference_Titel :
Visual Media Production, 2009. CVMP '09. Conference for
Conference_Location :
London
Print_ISBN :
978-1-4244-5257-6
Electronic_ISBN :
978-0-7695-3893-8
DOI :
10.1109/CVMP.2009.11