Image processing apparatus performing tone correction process and method, and image capturing apparatus performing tone correction process
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United States of America Patent
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Sep 12, 2017
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app pub date -
May 29, 2014
filing date -
May 29, 2013
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Abstract
An image processing apparatus comprising: an acquisition unit configured to acquire an image signal obtained by imaging an object by an image sensing unit; a generation unit configured to obtain a luminance distribution of the object based on the obtained image signal; a division unit configured to divide a region having a luminance lower than a predetermined luminance in the generated luminance distribution into a predetermined number of sub-regions, and obtain a most frequent region having a highest luminance frequency from the divided sub-regions; a selection unit configured to select a correction table corresponding to the obtained most frequent region from a plurality of correction tables stored in a storage unit; and a processing unit configured to perform a tone correction process on the image signal by using the selected correction table.
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