发明名称 |
Method of and apparatus for reducing noise in a motion detector signal |
摘要 |
A method of reducing noise in the signal of a motion detector for recursive filtering of video signals, in which the signal is median-filtered. A part of the amplitude range of this signal located below a threshold value is suppressed and the signal is subsequently used for forming the factor (k) controlling the recursive filter. In the case of stationary images or images of little motion, the factor (k) is set at a maximum value dependent upon interference pulses occurring in the video input signal (V1) and at a minimum value dependent upon interference pulses occurring in the video output signal (V2).
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申请公布号 |
US5543858(A) |
申请公布日期 |
1996.08.06 |
申请号 |
US19940253522 |
申请日期 |
1994.06.03 |
申请人 |
U. S. PHILIPS CORPORATION |
发明人 |
WISCHERMANN, GERHARD |
分类号 |
H04N5/14;H04N5/21;H04N5/213;(IPC1-7):H04N5/21 |
主分类号 |
H04N5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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