Image noise filter and method
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United States of America Patent
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Sep 17, 2013
Grant Date -
Sep 9, 2010
app pub date -
Nov 13, 2009
filing date -
Nov 14, 2008
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Abstract
An image noise filter includes a wavelet transform module and an edge based adaptive filter module. The dual tree wavelet transform module provides low frequency wavelet information and high frequency wavelet information in response to image information. The edge based adaptive filter module provides filtered high frequency wavelet information in response to the high frequency wavelet information and edge information that is based on the low frequency wavelet information.
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