Implicit determination of collocated picture for temporal prediction

摘要

In one embodiment, a method determines a block of a current picture and a prediction type associated with the block. Also, the method determines one of a first list of reference pictures and a second list of reference pictures for the block. An encoder or a decoder selects the one of the first list of reference pictures or the second list of reference pictures implicitly without communication of information between the encoder and the decoder indicating which of the first list of reference pictures or the second list of reference pictures was selected. Then, the method sets a reference picture in the selected one of the first list of reference pictures and the second list of reference pictures as a collocated picture for the block. The selected reference picture is used in a temporal prediction process for the block.

主权项

1. A method comprising:
determining, by a computing device, a block of a current picture; determining, by the computing device, a prediction type associated with the block; selecting, by the computing device, one of a first list of reference pictures or a second list of reference pictures for the block by checking the prediction type associated with the block without communication of information between an encoder and a decoder indicating which of the lists of reference pictures was selected; selecting, by the computing device, a reference picture in the selected one of the lists of reference pictures without communication of information between the encoder and the decoder indicating which of the reference pictures to select; and using a collocated block within the selected reference picture in a temporal prediction process for the block, wherein one of: the first list of reference pictures is selected no matter what the prediction type; or the second list of reference pictures is selected no matter what the prediction type.