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Restricting inter-layer prediction based on a maximum number of motion-compensated layers in high efficiency video coding (HEVC) extensions

專利號
US10097825B2
公開日期
2018-10-09
申請人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Vadim Seregin; Ye-Kui Wang; Ying Chen; Marta Karczewicz
IPC分類
H04N19/105; H04N19/139; H04N19/30; H04N19/187
技術領域
video,prediction,layer,motion,coding,in,may,inter,or,intra
地域： CA CA San Diego

摘要

A method of coding video data includes receiving video information associated with a first layer and a second layer and determining whether at least one of the first layer and the second layer is a default layer. The method can include at least partially restricting inter-layer prediction when neither the first layer nor the second layer is the default layer. A default layer can be a base layer or an enhancement layer. A flag can be received that indicates that inter-layer prediction is to be restricted. In addition, the method can include determining whether inter-layer prediction is allowed for the video information associated with the first layer, and determining whether inter-layer prediction is partially allowed for the video information associated with the second layer such that motion compensation is not used with the second layer video information.

說明書

At block 906, it is determined whether at least one of the first or second video layers are the default layer. For example, it may be determined whether at least one of the first or second layers is the base layer, or layer 0. If so, the method 900 ends. If not, the method 900 proceeds to block 908. At block 908, inter-layer prediction is restricted. For example, the method 900 can prohibit the coding device from decoding or encoding the first or second layer video information in inter-layer prediction mode.

FIG. 10 illustrates an example method 1000 for coding video data according to an embodiment in which any maximum number of motion-compensated layers that may be used for inter-layer prediction may be determined. The method 1000 can be performed by one or more components of video encoder 20 or video decoder 30, for example. In some embodiments, other components may be used to implement one or more of the steps described herein.

At block 1002, video information regarding a plurality of layers can be obtained or received from a memory. The plurality of layers can include at least one reference layer and at least one enhancement layer.

At block 1004, a maximum number of motion-compensated layers that may be used for inter-layer prediction of a picture in any of the plurality of layers may be determined. For example, a flag that indicates the maximum number of motion-compensated layers that may be used for inter-layer prediction may be received.

權利要求

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