公开(公告)号：US10542288B2

公开(公告)日：2020-01-21

申请号：US14646722

申请日：2015-04-13

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Martin Pettersson ,  Jonatan Samuelsson ,  Rickard Sjöberg ,  Jacob Ström ,  Ruoyang Yu

IPC分类号： H04N19/70 ,  H04N19/107 ,  H04N19/132 ,  H04N19/164 ,  H04N19/176 ,  H04N19/31 ,  H04N19/44 ,  H04N19/58 ,  H04N19/593 ,  H04N21/6379 ,  H04N21/845 ,  H04N19/114

摘要： The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit-cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded using an IRAP picture as sole reference picture for the DRAP picture. The DRAP picture is encoded as a trailing picture that may be used for reference and constitutes a random access point in a video bitstream.

公开(公告)号：US10306245B2

公开(公告)日：2019-05-28

申请号：US14786116

申请日：2014-06-25

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Rickard Sjöberg ,  Jonatan Samuelsson ,  Ruoyang Yu

IPC分类号： H04N19/00 ,  H04N19/30 ,  H04N19/597 ,  H04N19/503 ,  H04N19/70 ,  H04N19/46 ,  H04N19/593 ,  H04N19/33 ,  H04N19/31 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44

摘要： A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures.

公开(公告)号：US09832463B2

公开(公告)日：2017-11-28

申请号：US14646713

申请日：2015-04-13

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Martin Pettersson ,  Jonatan Samuelsson ,  Rickard Sjöberg ,  Jacob Ström ,  Ruoyang Yu

IPC分类号： H04N19/70 ,  H04N19/58 ,  H04N19/44 ,  H04N19/132 ,  H04N19/593 ,  H04N19/107 ,  H04N19/31 ,  H04N19/176

CPC分类号： H04N19/107 ,  H04N19/132 ,  H04N19/176 ,  H04N19/31 ,  H04N19/44 ,  H04N19/58 ,  H04N19/593 ,  H04N19/70

摘要： The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded as a temporal predictive picture using an IRAP picture and/or a previous, according to a decoding order, DRAP picture as sole reference picture(s) for the DRAP picture. The DRAP picture constitutes a random access point in a video bitstream.

公开(公告)号：US20160088306A1

公开(公告)日：2016-03-24

申请号：US14786116

申请日：2014-06-25

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Rickard Sjöberg ,  Jonatan Samuelsson ,  Ruoyang Yu

IPC分类号： H04N19/30 ,  H04N19/44 ,  H04N19/423 ,  H04N19/187

CPC分类号： H04N19/30 ,  H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70

摘要： A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures.

摘要翻译： 解码器从包含多层图像的视频流的基本层中的RAP图像的编码表示中检索POC重新计算值。 使用POC重新计算值重新计算解码器的DPB中的参考图像的POC值。 通过发送RAP图像中的POC重新计算值，这使得解码器能够正确地处理具有非对齐的RAP图像的视频流。

公开(公告)号：US10484711B2

公开(公告)日：2019-11-19

申请号：US14646718

申请日：2015-04-13

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Martin Pettersson ,  Jonatan Samuelsson ,  Rickard Sjöberg ,  Jacob Ström ,  Ruoyang Yu

IPC分类号： H04N19/107 ,  H04N19/58 ,  H04N19/70 ,  H04N19/132 ,  H04N19/176 ,  H04N19/31 ,  H04N19/44 ,  H04N19/593 ,  H04N19/50 ,  H04N1/00 ,  H04N1/413

摘要： The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit-cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded using an IRAP picture and/or a previous, according to a decoding order, DRAP picture as sole reference picture(s) for the DRAP picture. The DRAP picture is encoded as a trailing picture that may be used for reference and constitutes a random access point in a video bitstream.

公开(公告)号：US20170041621A1

公开(公告)日：2017-02-09

申请号：US15102343

申请日：2013-12-18

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： Rickard SJÖBERG ,  Ruoyang Yu

IPC分类号： H04N19/174 ,  H04N19/196 ,  H04N19/42 ,  H04N19/436

CPC分类号： H04N19/174 ,  H04N19/156 ,  H04N19/196 ,  H04N19/42 ,  H04N19/436

摘要： Methods, decoders, and encoders are disclosed for managing a video sequence while using at least a number of processing cores. The video sequence represents a picture. The picture comprises a number of partitions, which are independent from each other with respect to decoding of the picture. The decoder or the encoder estimates a set of values, wherein each value of the set corresponds to a corresponding partition of the number of partitions, and wherein each value relates to decoding time of its corresponding partition. The decoder decodes or the encoder encodes the number of partitions based on the decoding time as given by the set of values, while using the number of processing cores, at least initially, in parallel. Moreover, corresponding computer programs and computer program products are disclosed.

摘要翻译： 公开了用于在使用至少多个处理核心的情况下管理视频序列的方法，解码器和编码器。 视频序列表示图像。 图像包括相对于图像的解码彼此独立的多个分区。 解码器或编码器估计一组值，其中集合的每个值对应于分区数目的对应分区，并且其中每个值涉及其相应分区的解码时间。 解码器解码或编码器基于由该组值给出的解码时间来编码分组数，同时至少最初并行地使用处理核的数量。 此外，公开了相应的计算机程序和计算机程序产品。