Photometric calibration method and device
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United States of America Patent
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Mar 26, 2013
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Feb 3, 2011
app pub date -
Jul 28, 2009
filing date -
Jul 28, 2009
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Abstract
A photometric calibration method includes: obtaining a target image and a reference image by a light field camera and transforming the reference image into a revised target image corresponding to the target image; calculating a photometric calibration ratio according to a function for correlating the target image and the revised target image by using a numerical algorithm; and the intensity of the target image is divided by the photometric calibration ratio to obtain a calibrated target image. A light field of a scene is formed by all of the calibrated target image so as to improve the quality of the light field.
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