Digital filter, and image generating, superhybrid image generating, electronic medium manufacturing, and letter-row tilt illusion generating apparatus, method and program
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United States of America Patent
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Aug 1, 2017
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app pub date -
Aug 28, 2014
filing date -
Feb 29, 2012
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Abstract
In the present invention, subband signals are obtained by performing multiresolution decomposition on image data by using a broad-sense pinwheel framelet that is a set of an approximate filter with no orientation and a plurality of detail filters with respective orientations, and that has a degree. When an image is reconstructed by summing the obtained subband signals, the reconstructed image data is generated by attenuating or amplifying a subband signal corresponding to at least one of filters that have predetermined frequency characteristics and/or a predetermined orientation among the filters.
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