RT Journal Article
JF IEEE Transactions on Pattern Analysis & Machine Intelligence
TI Vignette and Exposure Calibration and Compensation
A1 Dan B Goldman,
K1 Camera calibration
AB We discuss calibration and removal of “vignetting” (radial falloff) and exposure (gain) variations from sequences of images. Even when the response curve is known, spatially varying ambiguities prevent us from recovering the vignetting, exposure, and scene radiances uniquely. However, the vignetting and exposure variations can nonetheless be removed from the images without resolving these ambiguities or the previously known scale and gamma ambiguities. Applications include panoramic image mosaics, photometry for material reconstruction, image-based rendering, and preprocessing for correlation-based vision algorithms.
PB IEEE Computer Society, [URL:http://www.computer.org]