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Asynchronous Distributed Calibration for Scalable Reconfigurable Multi-Projector Displays

By Ezekiel Bhasker, Pinaki Sinha and Aditi Majumder

Abstract

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 truly scalable and reconfigurable displays without any input from the user and 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

Year: 2006
OAI identifier: oai:CiteSeerX.psu:10.1.1.133.9634
Provided by: CiteSeerX
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