公开(公告)号：US20170099490A1

公开(公告)日：2017-04-06

申请号：US15273514

申请日：2016-09-22

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Krishnakanth Rapaka ,  Rajan Joshi ,  Cheng-Teh Hsieh ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/172 ,  H04N19/186 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/70

Abstract: Systems and methods are provided for video encoding and decoding using intra-block copy mode when constrained intra-prediction is enabled. In various implementations, a video encoding device can determine a current coding unit for a picture from a plurality of pictures. The video encoding device can further determine that constrained intra-prediction mode is enabled. The video encoding device can further encode the current coding unit using one or more reference samples. The one or more reference samples are determined based on whether a reference sample has been predicted using intra-block copy mode prediction without using any inter-predicted samples. When the reference sample is predicted using intra-block copy mode without using any inter-predicted samples, the reference sample is available for predicting the current coding unit. When the reference sample is predicted using intra-block copy mode using at least one inter-predicted sample, the reference sample is not available for predicting the coding unit.