Image processing method and image processing device with correction of pixel statistical values to reduce random noise
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United States of America Patent
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Nov 22, 2016
Grant Date -
Apr 9, 2015
app pub date -
Apr 24, 2013
filing date -
Apr 26, 2012
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Abstract
The present invention is a method including: correcting difference between a pixel statistical value of a specific layer and a pixel statistical value of a layer that is wider than the specific layer using an edge information of a layer that is wider than the specific layer; correcting the pixel statistical value of the specific layer using post-correction difference and the pixel statistical value of layer that is wider than the specific layer; recorrecting the post-correction pixel statistical value of the specific layer using difference between a pre-correction pixel statistical value of the specific layer and the post-correction pixel statistical value of the specific layer and the edge information of a layer that is wider than the specific layer; and correcting the target pixel by repeating correction and recorrection until the layer reduces its range from the maximum range to the minimum range.
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