| 摘要 |
PURPOSE:To effectively reduce noise without deterioration of picture quality by distinguishing the noise and the picture signal spatially but also timewise. CONSTITUTION:A present input television signal (x) inputted from a terminal 1 is subtracted fro a forecast signal x' from a forecast circuit 41 by a subtractor 11 and a forecast error signal epsilon is obtained. Only a high frequency component epsilonH is extracted from the forecast error signal at a high pass filter 51, converted into a correction signal EH' at a correction signal generating circuit 31, added to the present input television signal at an adder 21 and the result is outputted as a television signal (y) subjected to noise reduction from a terminal 2. A 2-dimension spatial high pass filter is adopted as the high pass filter 51. Thus, the edge component and noise are separated.
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