Asynchronous Distributed Calibration for Scalable and Reconfigurable Multi-Projector Displays
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Centralized techniques have been used until now when automatically calibrating (both geometrically and photometrically) large high-resolution displays created by tiling multiple projectors in a 2D array. A centralized server managed all the projectors and also the camera(s) used to calibrate the display. In this paper, we propose an asynchronous distributed calibration methodology via a display unit called the plug-and-play projector (PPP). The PPP consists of a projector, camera, computation and communication unit, thus creating a self-sufficient module that enables an asynchronous distributed architecture for multi-projector displays. We present a single-program-multiple-data (SPMD) calibration algorithm that runs on each PPP and achieves a truly scalable and reconfigurable display without any input from the user. It instruments novel capabilities like adding/removing PPPs from the display dynamically, detecting faults, and reshaping the display to a reasonable rectangular shape to react to the addition/removal/faults. To the best of our knowledge, this is the first attempt to realize a completely asynchronous and distributed calibration architecture and methodology for multi-projector displays.
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Index Terms:
Multi-projector displays, projector-camera systems, geometric and color calibration, distributed algorithms.
Citation:
Ezekiel S. Bhasker, Pinaki Sinha, Aditi Majumder, "Asynchronous Distributed Calibration for Scalable and Reconfigurable Multi-Projector Displays," IEEE Transactions on Visualization and Computer Graphics, vol. 12, no. 5, pp. 1101-1108, Sept. 2006, doi:10.1109/TVCG.2006.121
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