| 摘要 |
The present invention prevents motion image portions of an image having a periodic pattern of a constant-speed motion or the like from erroneously regarded and simultaneously prevents edge portions of a still image having a motion background from being motion-processed. There are provided a motion detector part (3,51) for receiving both pixel data (Pi(0)) of an interlaced image and pixel data (Pi(+2F)) obtained by delaying the pixel data (Pi(0)) by two fields (2F) to detect a motion; a history value producing part (52,53) for producing a history value (Hk) indicative of the times an image is successively regarded as "still image" from a result of motion detection (Dif(0)); and a pixel data interpolation part (4) for mixing pixel data (Pm) obtained by an in-field interpolation based on the pixel data of the interlaced image with pixel data (Ps) obtained by a plural-inter-field interpolation by use of a ratio (Rmix) in accordance with the foregoing motion detection result (Dif(0)) and history value (Hk). The greater the history value (Hk) is, the more the pixel data interpolation part (4) mixes the pixel data (Ps) obtained by the inter-field interpolation. |
