IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
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United States of America Patent
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Issued Date -
Jun 9, 2016
app pub date -
Nov 25, 2015
filing date -
Dec 3, 2014
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Abstract
An image processing apparatus configured to acquire an image having phase information of an electromagnetic wave from a cyclic pattern image generated by interference of the electromagnetic wave, comprises an acquisition unit configured to acquire a pattern image; a first conversion unit configured to convert the pattern image into a spectrum in a wave number space; a filter unit configured to apply to the spectrum a filter that cuts off components included in a predetermined cut-off region; and a second conversion unit configured to convert the filtered spectrum, in which the components included in the predetermined cut-off region are cut off, into an image having phase information, wherein the cut-off region is a region that includes at least a part of a first axis, which is an axis passing through a center point of the spectrum.
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