Video coding method and device, related scalable bitstream and computer program product
    2.
    发明公开
    Video coding method and device, related scalable bitstream and computer program product 有权
    Zeitliche Skalierbarkeit im Falle vonSzenenänderungen

    公开(公告)号:EP2224745A1

    公开(公告)日:2010-09-01

    申请号:EP10154534.1

    申请日:2010-02-24

    Abstract: An encoder device (SE) allows generating, starting from a sequence (IS) of digital video pictures, a time-scalable encoded bitstream (SB) obtained by applying to the pictures a hierarchical prediction (P) wherein the pictures are organised in Groups Of Picture or GOPs including:
    - base time layer (L0) pictures, designated Key Picture and suitable for encoding a Inter or Intra, with and without motion-compensated prediction respectively,
    - higher time layer (L1, L2, L3) pictures, adapted to be selectively eliminated to effect time scalability of the encoded scalable bitstream (SB).
    Carried out for such purpose is the detection (IB) of the possible presence of scene changes (SC) in the sequence (IS) of digital video pictures, and, in the presence of a scene change (SC), the first Key Picture after the scene change (SC) is in any case encoded (120) as Intra (I0).

    Abstract translation: 编码器装置(SE)允许从数字视频图像的序列(IS)开始,通过向图像应用通过将图像组织在组中的分层预测(P)而获得的时间可分级编码比特流(SB) 图像或GOP包括: - 分别具有和不具有运动补偿预测的基本时间层(L0)图像,指定的关键图像并且适合于编码Inter或Intra, - 更高的时间层(L1,L2,L3)图像,适于 被选择性地消除以实现编码的可缩放比特流(SB)的时间可缩放性。 为了这样的目的而进行的是在数字视频图像的序列(IS)中可能存在场景变化(SC)的检测(IB),并且在存在场景变化(SC)的情况下,第一关键图像 在任何情况下,场景变化(SC)被编码(120)为Intra(I0)。

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