Scalable alignment of large-format multi-projector displays using camera homography trees
Proceedings of the conference on Visualization '02
Building and Using A Scalable Display Wall System
IEEE Computer Graphics and Applications
The Everywhere Displays Projector: A Device to Create Ubiquitous Graphical Interfaces
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
iLamps: geometrically aware and self-configuring projectors
ACM SIGGRAPH 2003 Papers
Interaction Using a Handheld Projector
IEEE Computer Graphics and Applications
Tools and Applications for Large-Scale Display Walls
IEEE Computer Graphics and Applications
Real-Time automatic calibration for omni-display in ubiquitous computing
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
The dream of Peter Pan: user interaction arts using computer vision techniques
Proceedings of the international conference on Advances in computer entertainment technology
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In recent years, projectors are undergoing a transformation as they evolve from static output devices to portable, or communication systems. However, the projection images appear distorted unless the projector is precisely aligned to the projection screen. Generally many projection-based systems are corrected for oblique projection distortion using calibration methods (e.g., warping function). Computing a warping function uses fiducials or a special pattern projected to the screen. These methods are unable to automatically calibrate in real-time especially when a projector is moving. In this paper, we proposed an automatic calibration system in real-time. Our system makes up of a function to correct images that are only based on the degree angle of a mirror set up in front of the projector without attaching fiducials to the screen. Therefore the system can be used to display regardless of screen condition in parallelepiped room. This operation process is very simple and fast. Therefore our system provides a function of correcting movies during the movement of the projector (27.3fps). An advantage of the proposed method is the system can be easily applied to ubiquitous computing like interactive presentation or game.