The appearance of objects and scenes can vary considerably with respect to illumination conditions. In [1], differences in face appearance due to lighting were found to be greater than those due to identity. Since such appearance variations can affect the performance of certain computer vision algorithms, much research has focused on illumination estimation, so that lighting can be accounted for in image understanding.<\/p>\n","protected":false},"excerpt":{"rendered":"
The appearance of objects and scenes can vary considerably with respect to illumination conditions. In [1], differences in face appearance due to lighting were found to be greater than those due to identity. 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