| 摘要 |
<p>Method and apparatus for picture coding and method and apparatus for picture decoding are disclosed, wherein an apparatus for picture coding comprises: means for receiving and storing picture data composed in frames, activity calculating means for calculating the activity of the picture data in every frame, frame/field coding judging means for receiving the activity, and Judging to perform frame unit coding when the activity is over a specific value or to perform field unit coding by dividing a frame into fields when the activity is below a specific value, and coding means for coding in frame unit or coding in field unit concerning the picture data on the basis of the judgement, and issuing a coded picture signal containing the frame/field coding Judgement signal, whereby picture coding of high efficiency is realized despite magnitude of motion, by coding in field unit when the motion of picture is large, and coding in frame unit by making use of the vertical correlation of picture when the motion is small. <IMAGE></p> |
