发明名称 Noise detection method, noise reduction method, noise detection device, and noise reduction device
摘要 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.
申请公布号 US7599007(B2) 申请公布日期 2009.10.06
申请号 US20050225024 申请日期 2005.09.14
申请人 CANON INC. 发明人 MATSUNAGA SEIJI
分类号 H04N5/14;H04N5/00 主分类号 H04N5/14
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