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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(shù)領(lǐng)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

According to the SVC specification, the pictures with the lowest spatial 410 and quality 412 layer are compatible with H.264/AVC, and the pictures at the lowest temporal level 414 form the temporal base layer, which can be enhanced with pictures at higher temporal levels. In addition to the H.264/AVC compatible layer, several spatial and/or SNR enhancement layers can be added to provide spatial and/or quality scalabilities. SNR scalability 406 is also referred as quality scalability. Each spatial 404 or SNR 406 enhancement layer itself may be temporally scalable, with the same temporal scalability structure as the H.264/AVC compatible layer. For one spatial or SNR enhancement layer, the lower layer it depends on is also referred as the base layer of that specific spatial or SNR enhancement layer.

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