We discuss calibration and removal of "vignetting" (radial falloff) and exposure (gain) variations from sequences of images. Unique solutions for vignetting, exposure and scene radiances are possible when the response curve is known. When the response curve is unknown, an exponential ambiguity prevents us from recovering these parameters uniquely. However, the vignetting and exposure variations can nonetheless be removed from the images without resolving this ambiguity. Applications include panoramic image mosaics, photometry for material reconstruction, image-based rendering, and preprocessing for correlation-based vision algorithms.


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    Title :

    Vignette and exposure calibration and compensation


    Contributors:


    Publication date :

    2005-01-01


    Size :

    1527352 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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