Automatic Photograph Enhancement
نویسنده
چکیده
We propose a method of image enhancement, based on a spatial domain technique called histogram equalization. Traditional histogram equalization is only useful for images with backgrounds and foregrounds that are both bright or both dark, whereas our method works for images with high dynamic range. The technique is to segment the image into large regions with high contrast separations which are then enhanced locally. The general problem of finding balanced cuts is NP-Hard and for the special case where the partitions have a special structure we give an polynomial time algorithm for finding good separations. Finally we demonstrate the algorithm on an example.
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