Noise detection method, noise reduction method, noise detection device, and noise reduction device
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United States of America Patent
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Oct 6, 2009
Grant Date -
Dec 14, 2006
app pub date -
Sep 14, 2005
filing date -
Jun 9, 2005
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Abstract
In detection of noise by comparing a digital input image signal and an output image signal in one previous frame with each other, when the input image signal, the output image signal in one previous frame, and a predetermined reference value are represented by a, b, and x, respectively, and when |a−b|≦x and a−b≠1 are satisfied, the presence of noise is determined.
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