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.
Vignette and exposure calibration and compensation
Tenth IEEE International Conference on Computer Vision (ICCV'05) Volume 1 ; 1 ; 899-906 Vol. 1
01.01.2005
1527352 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Vignette and Exposure Calibration and Compensation
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