Identifying and correcting anomalies in an optical image
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United States of America Patent
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Jan 12, 2016
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Feb 20, 2014
app pub date -
Mar 27, 2012
filing date -
Mar 31, 2011
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Abstract
An embodiment of the invention provides an apparatus and a method. An intensity gradient between first and second optical image data of an optical image produced by an optical scanning device is determined. The first optical image data is a first optical image pixel and the second optical image data is a second optical image pixel. An intensity gradient image comprising a plurality of intensity gradient image pixels is determined, each intensity gradient image pixel representing the magnitude of an intensity gradient. One or more anomalies in the optical image in dependence on the magnitude of the intensity gradient being greater than or equal to a threshold value is identified.
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