发明名称 |
NOISE REDUCTION FOR VIDEO SIGNALS |
摘要 |
A method of reducing noise in video signal, by processing the pixels of a process frame of video signal in conjunction with a selected number of previously processed frames to determine values for target pixels in the process frame by applying a temporal motion detector to determine whether a target pixel has a still or motion status and further processing the pixels with motion status by impulse recognition step to further determine whether the pixel should be classified as having a still or a motion status. The pixels are then checked via a spatial motion detecting step to obtain a motion index value to the pixels and the motion index value is used in a motion adaptive temporal filter to define the pixel value of the still pixel. The motion index value of the pixels is used to set a dynamic threshold in a detailed motion active spatial filter to define the pixel value for the motion pixels. The system may be integrated with a converter box for converting digital signals to analog for use in conjunction with analog television sets services by digital signals.
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申请公布号 |
WO0161993(A1) |
申请公布日期 |
2001.08.23 |
申请号 |
WO2000CA00155 |
申请日期 |
2000.02.17 |
申请人 |
THE UNIVERSITY OF BRITISH COLUMBIA |
发明人 |
WARD, RABAB, K.;DU, JULONG |
分类号 |
H04N5/14;H04N5/21;(IPC1-7):H04N5/21 |
主分类号 |
H04N5/14 |
代理机构 |
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