A theory for photometric calibration of cameras and multiple projectors with overlapping displays is presented. The theory is predominantly based on the analysis of isointensity curves in projector input state space curves which define different projector input intensity combinations that result in the same camera-observed pixel intensities. Three methods, which have different speed and accuracy tradeoffs, are proposed for recovering the projector-to-screen and screento- camera intensity transfer functions. The methods do not require a specific parametric model for the shapes of these functions, nor impose any smoothness constraints. Additional methods are described for calibrating projector offsets and binary light sources, and also extending the perpixel analysis to other pixels in the display. The methods do not require the use of expensive equipment, and may be carried out with a low dynamic range camera with minimal controls.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Theory for Photometric Self-Calibration of Multiple Overlapping Projectors and Cameras


    Contributors:
    Peng Song, (author) / Tat-Jen Cham, (author)


    Publication date :

    2005-01-01


    Size :

    1969062 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





    Calibration of Non-Overlapping Cameras in Vehicles, pp. 1178-1183

    Pagel, F. / Institute of Electrical and Electronics Engineers | British Library Conference Proceedings | 2010


    Persistent Objects Tracking Across Multiple Non Overlapping Cameras

    Kang, Jinman / Cohen, Isaac / Medioni, Gerard | IEEE | 2005