Patent ID: 9485505
Filing Date: 2016-11-01
CPC Classification: H04N

Claim Text:
1. A method of reference picture management for video coding of a video sequence, the method comprising: receiving input data associated with a current image unit of the video sequence, wherein the current image unit corresponds to a current picture, a current slice of the current picture, or a current region of the current picture; determining one or more reference pictures for the current image unit, wherein said one or more reference pictures are indicated using information associated with COIs (coding order indexes) of said one or more reference pictures; applying inter-picture encoding or decoding to the input data using the reference pictures; determining one or more useless pictures which are not referenced by the current picture or following pictures, wherein said one or more useless pictures are indicated using information associated with COIs of said one or more useless pictures; and removing said one or more useless pictures from a decoded picture buffer (DPB) after said one or more useless pictures are outputted; wherein the COI (coding order index) is represented by a coded COI using a fixed number of bits, wherein the coded COI is constrained to a range from 0 to MAX COI-1 and MAX COI is one positive integer; wherein the COI is determined from the coded COI and COI MSB at a decoder side, wherein the COI MSB corresponds to a most significant bits portion of the COI exceeding the coded COI; wherein the COI MSB is initialized to 0 at the decoder side when a first picture or a refreshing picture in the video sequence is received at the decoder side.