发明名称 |
Trace video filtering using wavelet de-noising techniques |
摘要 |
A filter that includes an analyzer, thresholding circuit, and synthesizer. The analyzer generates a low-frequency component signal and a high-frequency component signal from an input signal. The thresholding circuit generates a processed high-frequency signal from the high-frequency component signal, the processed high-frequency signal having an amplitude of zero in those regions in which the high-frequency component signal has an amplitude that is less than a threshold value. The synthesizer generates a filtered signal from input signals that include the low-frequency component signal and the processed high-frequency signal. The filtered signal is identical to the input signal if the threshold value is zero. The analyzer is preferably constructed from a plurality of finite impulse response filters that operate on a small fraction of the input signal at a time.
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申请公布号 |
US2003123584(A1) |
申请公布日期 |
2003.07.03 |
申请号 |
US20010035593 |
申请日期 |
2001.12.28 |
申请人 |
SIEGEL ERWIN FREDERICK;ANDERSON KEITH FREDERICK |
发明人 |
SIEGEL ERWIN FREDERICK;ANDERSON KEITH FREDERICK |
分类号 |
G01R13/20;G01R23/16;H03H17/02;(IPC1-7):H04B1/10 |
主分类号 |
G01R13/20 |
代理机构 |
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主权项 |
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地址 |
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