Method and apparatus for compensating illumination variations in a sequence of images
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United States of America Patent
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Jan 16, 2018
Grant Date -
Sep 3, 2015
app pub date -
Aug 27, 2013
filing date -
Sep 19, 2012
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Abstract
In order to take into account the local illumination variations in a scene, the invention proposes a method of compensating illumination variations in which distributions are determined for each block of an image (or view) and, in order to avoid a loss of the video coding efficiency, a distribution-based mapping function is automatically computed by a remote apparatus, such a decoder, from only information available at that apparatus when decoding a current block of the sequence of images. The present invention relates also to a method and device of encoding and/or decoding a sequence of images which comprises means configured to implement the method of compensating illumination variations according to the invention.
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