Enhancing perceived sharpness of images
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United States of America Patent
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Jul 26, 2016
Grant Date -
Jan 15, 2015
app pub date -
Jul 10, 2014
filing date -
Jul 11, 2013
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Abstract
A method of enhancing the perceived sharpness of an image by controlling a spatial interpolation process. A pixel value spatial gradient measure is formed and used to generate a map of modified pixel positions. In this map, the pixel spacing is reduced when the gradient measure is high. By using this map of modified pixel positions to control an otherwise conventional interpolation process, an output image is formed having a perceived sharpness which is greater than that of the unmodified output of the interpolation process.
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