| 摘要 |
A motion vector detection portion detects a motion vector based on an input image signal and an image signal of previous field that is one field before the input signal. A motion compensation portion performs motion compensation on the image signal of previous field using the motion vector to generate a motion-compensated image signal. A reference-image-setting portion selects as a reference image signal either the image signal of previous frame or the motion-compensated image signal. A selection control portion performs motion detection and selects as the reference image signal, the motion-compensated image signal in a motion region and the image signal of previous frame in a motionless region. A correction-processing portion detects a noise component from a difference between the input signal and the reference signal and corrects a signal level of the input signal corresponding to this noise component.
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