| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise reducing method and device that detect a noise component included in a digital video signal and perform proper noise reduction. SOLUTION: Disclosed are the method and device which, when comparing a digital input image signal with an output image signal one frame precedent to detect a noise, decide that there is a noise when ¾a-b¾≤x and a-b≠1, where (a) is an input image signal, (b) is an output image signal one frame precedent, and (x) is a predetermined reference value, and average both the image signals when there is the noise and output the input image signal as it is when not. COPYRIGHT: (C)2007,JPO&INPIT
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