Explicit way for signaling a collocated picture for high efficicency video coding (HEVC) using reference list0 and list1

摘要

A system is provided for determining a collocated reference picture to enable encoding and decoding of a current picture for high efficiency video coding (HEVC). The collocated picture is identified by accessing syntax that can include an index for a list0 and a list1, a reference picture set number indicating the number of pictures in list0 and list1, and a flag indicating if the collocated picture is in list0 or list1. The system can further use slice type to determine if both list0 and list1 should be accessed.

主权项

1. A method of identifying a collocated picture in a group of pictures provided in a video stream, the method comprising:
providing a first reference picture set number as a number of reference pictures within a first reference picture set including all reference pictures that are prior to a current picture in decoding order; determining if the first reference picture set number is greater than 1, and if so providing a first collocated picture index for the first reference picture set, and if not, identifying the first entry of the first reference picture set as a candidate for a collocated picture that may be used in inter prediction of the current picture; providing a second reference picture set number as a number of reference pictures within a second reference picture set including all reference pictures that are after the current picture in decoding order; and determining if the second reference picture set number is greater than 1, and if so providing a second collocated picture index in the second reference picture set, and if not, identifying the first entry of the second reference picture set as a candidate for the collocated picture, wherein at least one of the first reference picture set or the second reference picture set identifies the collocated picture.