公开(公告)号：EP3078195A4

公开(公告)日：2017-08-09

申请号：EP14867879

申请日：2014-11-28

Applicant: NOKIA TECHNOLOGIES OY

Inventor： HANNUKSELA MISKA

IPC: H04N19/30 ,  H04N19/134 ,  H04N19/70

CPC classification number: H04N19/30 ,  H04N19/50 ,  H04N19/70

Abstract: A method comprising: encoding pictures into a bitstream, the bitstream comprising at least two scalability layers, pictures being associated with access units and pictures being associated individually with one of the at least two scalability layers; indicating in the bitstream inter-layer prediction dependencies, indicative of direct reference layers, if any, of a first scalability layer and indirect reference layers, if any, of the first scalability layer; selecting an earlier picture in decoding order as a basis for deriving picture order count (POC) related variables for a current picture based on a pre-defined algorithm, the current picture being associated with a current scalability layer, wherein the earlier picture is the closest preceding picture, in decoding order, to the current picture among a set of pictures that are associated with the current scalability layer or any direct or indirect reference layer of the current scalability layer.

Abstract translation: 1。一种方法，包括：将图片编码成比特流，所述比特流包括至少两个可伸缩性层，图片与访问单元和图片分别与所述至少两个可伸缩性层中的一个相关联; 在比特流中指示层间预测依赖性，指示第一可伸缩性层的第一可伸缩性层和间接参考层（如果有的话）的直接参考层（如果有的话）; 以解码顺序选择较早的图片作为基于用于基于预定义算法导出当前图片的图片顺序计数（POC）相关变量的基础，所述当前图片与当前可伸缩性层关联，其中较早图片是最接近 先前图片以解码顺序映射到与当前可伸缩性层或当前可伸缩性层的任何直接或间接参考层相关联的一组图片当中的当前图片。

公开(公告)号：EP2941868A4

公开(公告)日：2016-07-13

申请号：EP14735401

申请日：2014-01-07

Applicant: NOKIA TECHNOLOGIES OY

Inventor： UGUR KEMAL ,  HANNUKSELA MISKA ,  LAINEMA JANI

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/105 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/573 ,  H04N19/58

CPC classification number: H04N19/00575 ,  H04N19/103 ,  H04N19/105 ,  H04N19/187 ,  H04N19/33 ,  H04N19/46 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70 ,  H04N19/96

Abstract: Various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments a first picture having a first resolution on a first layer is encoded without inter-layer prediction; a second picture having a second resolution on a second layer is encoded without inter-layer prediction; a third picture having the second resolution on the second layer is encoded without inter-layer prediction and without temporally referencing to pictures prior to the second picture. Further, a corresponding indication is encoded. In some embodiments one or more indications are received to determine if a switching point, referring to a picture coded using inter-layer prediction, from the first layer to the second layer exists, and if so, pictures in the first layer prior to the switching point; pictures associated with the switching point; and pictures in the second layer after the switching point may be decoded.

公开(公告)号：EP2901688A4

公开(公告)日：2016-05-25

申请号：EP13841278

申请日：2013-09-25

Applicant: NOKIA TECHNOLOGIES OY

Inventor： UGUR KEMAL ,  HANNUKSELA MISKA ,  BICI MEHMET OGUZ

IPC: H04N19/187 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/593

CPC classification number: H04N19/52 ,  H04N19/0003 ,  H04N19/105 ,  H04N19/107 ,  H04N19/156 ,  H04N19/159 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46 ,  H04N19/593 ,  H04N19/70

Abstract: There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In other embodiments, there is provided a method, an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video encoder, for encoding a scalable bitstream, to provide indicating an encoding configuration, where only samples and syntax from intra coded pictures of base layer is used for coding the enhancement layer pictures. In other embodiments, there is provided an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video decoder, for decoding a scalable bitstream, to receive indications of an encoding configuration, where only samples and syntax from intra coded pictures of base layer is used for coding the enhancement.

公开(公告)号：EP2901690A4

公开(公告)日：2016-05-04

申请号：EP13842579

申请日：2013-09-27

Applicant: NOKIA TECHNOLOGIES OY

Inventor： LAINEMA JANI ,  HANNUKSELA MISKA ,  UGUR KEMAL ,  BICI MEHMET OGUZ

IPC: H04N19/30 ,  G06T7/20 ,  H04N19/513 ,  H04N19/59

CPC classification number: H04N19/00587 ,  H04N19/30 ,  H04N19/513 ,  H04N19/59

公开(公告)号：EP2805471A4

公开(公告)日：2015-09-02

申请号：EP13738088

申请日：2013-01-17

Applicant: NOKIA TECHNOLOGIES OY

Inventor： LIU CHENGHAO ,  HANNUKSELA MISKA

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L67/2847 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/105 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/02

Abstract: Various methods are described for enabling efficient pre-fetching of media in a DASH system. One example method may comprise accessing information related to a media presentation description (MPD). The information comprising information related to one or more segments of the MPD. The method of this example embodiment may further comprise generating a request for a segment of the MPD. Furthermore, the method of this example embodiment may comprise generating a request for pre-fetching one or more segments different from the requested segment. The method of this example embodiment may further comprise providing for transmission of the request for the segment and the request for pre-fetching the one or more different segments to a proxy cache server. Similar and related example methods, example apparatuses, and example computer program products are also provided.

公开(公告)号：EP3120552A4

公开(公告)日：2017-12-06

申请号：EP15764153

申请日：2015-02-16

Applicant: NOKIA TECHNOLOGIES OY

Inventor： HANNUKSELA MISKA

IPC: H04N19/30 ,  H04N19/70

CPC classification number: H04N19/70 ,  H04N19/30 ,  H04N19/463 ,  H04N19/513 ,  H04N19/52

Abstract: Various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments a data structure is encoded that is associated with a base-layer picture and an enhancement-layer picture in a file or a stream comprising a base layer of a first video bitstream and/or an enhancement layer of a second video bitstream, wherein the enhancement layer may be predicted from the base layer; and into the data structure information that is indicative of whether the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding is also encoded. If the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding; the data structure information is further indicative of the type of the intra random access point IRAP picture for the decoded base-layer picture to be used in the enhancement layer decoding.

公开(公告)号：EP3090558A4

公开(公告)日：2017-08-16

申请号：EP14877107

申请日：2014-12-31

Applicant: NOKIA TECHNOLOGIES OY

Inventor： HANNUKSELA MISKA

IPC: H04N19/70 ,  H04N19/134 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/44 ,  H04N19/46

Abstract: There is provided methods, apparatuses and computer program products for forming a plurality of syntax element assignments, each syntax element assignment relating to a subset of parameters of a set of parameters, and each syntax element assignment comprising assignments of values to said related subset of parameters, forming an index for each of said plurality of syntax element assignments, forming a plurality of combination parameter sets, each combination parameter set comprising indexes of a plurality of said syntax element assignments of said subsets of parameters, and encoding at least one said combination parameter set into a video bitstream for determining parameter values for video decoding.

Abstract translation: 提供了用于形成多个语法元素分配的方法，装置和计算机程序产品，每个语法元素分配涉及一组参数的参数子集，并且每个语法元素分配包括对所述相关参数子集的值分配 ，为所述多个语法元素分配中的每一个形成索引，形成多个组合参数集合，每个组合参数集合包括所述参数子集的多个所述语法元素分配的索引，以及编码至少一个所述组合参数 设置成用于确定用于视频解码的参数值的视频比特流。

公开(公告)号：EP3025501A4

公开(公告)日：2017-02-22

申请号：EP14829991

申请日：2014-07-16

Applicant: NOKIA TECHNOLOGIES OY

Inventor： LAINEMA JANI ,  UGUR KEMAL ,  HANNUKSELA MISKA

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/167 ,  H04N19/17

CPC classification number: H04N19/44 ,  H04N19/103 ,  H04N19/107 ,  H04N19/167 ,  H04N19/17 ,  H04N19/70 ,  H04N19/91

Abstract: A method for decoding an encoded video representation from a bitstream, the method comprising decoding an identifier indicating that all samples within a scope of the bitstream have been coded with a prediction restriction; determining that the scope covers a region of interest within a picture; decoding at least a first coding unit preceding said region of interest in decoding order in a parse mode such that syntax elements belonging to said at least first coding unit are parsed, but a sample reconstruction process of said syntax elements is omitted; and decoding at least a second coding unit belonging to said region of interest such that syntax elements belonging to said at least second coding unit are parsed and a sample reconstruction process is performed to said syntax elements.

公开(公告)号：EP2005751A4

公开(公告)日：2016-07-27

申请号：EP07734086

申请日：2007-03-27

Applicant: NOKIA TECHNOLOGIES OY

Inventor： HANNUKSELA MISKA ,  WANG YE-KUI

IPC: H04N19/30 ,  H04N19/37 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/31 ,  H04N19/30 ,  H04N19/37 ,  H04N19/46 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70

Abstract: The use of a picture delimiter that is contained in a NAL unit type value that is reserved in the current AVC or SVC specification. The present invention provides the scalability information for the H.264/AVC base layer in such a manner that bitstreams remain decodable with H.264/AVC decoders. In addition, the picture delimiter of the present invention may contain many other syntax elements that can help in easier processing of bitstreams compared to the plain H.264/AVC bitstream syntax.

Abstract translation: 使用包含在当前AVC或SVC规范中保留的NAL单元类型值的图像分隔符。 本发明以H.264 / AVC解码器保持可解码的方式为H.264 / AVC基础层提供可扩展性信息。 此外，与普通的H.264 / AVC比特流语法相比，本发明的图像分隔符可以包含许多其他语法元素，其可以帮助比特流的更容易的处理。

公开(公告)号：EP2941877A4

公开(公告)日：2016-07-13

申请号：EP13870207

申请日：2013-12-31

Applicant: NOKIA TECHNOLOGIES OY

Inventor： HANNUKSELA MISKA ,  UGUR KEMAL

IPC: H04N19/34 ,  H04N19/103 ,  H04N19/29 ,  H04N19/30 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/463 ,  H04N19/30 ,  H04N19/61 ,  H04N19/70

Abstract: A method comprising encoding a bitstream comprising a base layer, a first enhancement layer and a second enhancement layer; encoding an indication of both the base layer and the first enhancement layer used for prediction for the second enhancement layer in the bitstream; encoding, in the bitstream, an indication of a first set of prediction types that is applicable from the base layer to the second enhancement layer, wherein the first set of prediction types is a subset of all prediction types available for prediction between layers, and encoding, in the bitstream, an indication of a second set of prediction types that is applicable from the base layer or the first enhancement layer to the second enhancement layer, wherein the second set of prediction types is a subset of all prediction types available for prediction between layers.