| 摘要 |
<p>In a picture encoding apparatus which can reduce an amount of computation in encoding, frames (FR0, ... FR5) are inputted in time series, and a scene change is detected. A scene number for identifying an identical or similar scene is assigned to each of the frames (FR0, ..., FRS), and when a new scene appears, a new scene number (scene No. 0, No. 1) is assigned. Picture frames (FR0, ..., FR5) having the same scene number (scene No. 0, No. 1) assigned thereto, the frames (FR0, ..., FR5) being continuously inputted, are encoded in an inter-prediction mode. When a frame (FR0, ..., FR5) is inputted after a scene change, a search is made for a reference picture in accordance with a scene number (scene No. 0, No. 1) - If no reference picture exists, encoding is carried out in an infra-prediction mode- If a reference picture exists, the frame (FR0, ..., FR5) is encoded in any one of the in-.ra-oredicrion mode and the inier-prediction mode so as to minimize an encoding COST.</p> |
