Method of selecting a reference picture
View Patent ↗In one embodiment, the method includes obtaining a reference picture list including multiple reference pictures, obtaining a field reference picture index associated with the current field macroblock, and determining a frame reference picture index based on the field reference picture index. A field reference picture having a parity different from a parity of the field macroblock is selected if the field reference picture index is an odd value.
1. A method of decoding a current field block by selecting a reference field picture performed by a moving picture decoder, comprising:
obtaining, by the moving picture decoder, a reference frame picture list of multiple reference frame pictures;
determining, by the moving picture decoder, a reference frame picture index based on display order information for the multiple reference frame pictures;
obtaining, by the moving picture decoder, a reference field picture index associated with the current field block;
determining, by the moving picture decoder, a reference frame picture from the multiple reference frame pictures included in the reference frame picture list based on the obtained reference field picture index divided by 2;
selecting, by the moving picture decoder, a reference field picture having a different parity from the current field block if the obtained reference field picture index is an odd value, otherwise the selecting step selects a reference field picture having a same field parity as the current field block; and
decoding, by the moving picture decoder, the current field block by referring to the selected reference field picture.