Patent ID: 8687694
Filing Date: 2014-04-01
Classification: H04N

Abstract:
1. A reference picture selection method for selecting a reference picture for a current bottom field to be coded when coding interlaced video, said method comprising: predicting a first degree of motion of the current bottom field and a second degree of motion of the current bottom field, the first degree of motion being predicted using a first field, and the second degree of motion being predicted using a second field which precedes the current bottom field in coding order; comparing the predicted first degree of motion to the predicted second degree of motion; selecting, according to a comparison result in said comparing, only pictures suitable for the coding of the current bottom field from a plurality of pictures included in the interlaced video; setting the selected pictures as reference picture candidates, so as to exclude a picture not suitable for the coding of the current bottom field from the reference picture candidates; and selecting a reference picture for the current bottom field, from among the set reference picture candidates.