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21. 发明申请

WO2021201739A1 VIDEO PROCESSING USING SYNTAX ELEMENTS 审中-公开
公开(公告)号：WO2021201739A1
公开(公告)日：2021-10-07
申请号：PCT/SE2021/050051
申请日：2021-01-27
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , PETTERSSON, Martin , DAMGHANIAN, Mitra , STRÖM, Jacob , ZHANG, Zhi , ANDERSSON, Kenneth , ENHORN, Jack
IPC分类号： H04N19/70 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/96 , H04N19/186 , H04N19/82
摘要： There is provided a method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.

22. 发明申请

WO2021139905A1 PICTURE HEADER PRESENCE 审中-公开
公开(公告)号：WO2021139905A1
公开(公告)日：2021-07-15
申请号：PCT/EP2020/076815
申请日：2020-09-24
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , DAMGHANIAN, Mitra , PETTERSSON, Martin
IPC分类号： H04N19/70 , H04N19/463
摘要： A method for decoding a picture from a bitstream. In one embodiment, The method includes: receiving a slice header for a slice of the picture, wherein the slice header comprises a state syntax element; decoding (805) a state value from the state syntax element in the slice header, wherein a) if the state value is not equal to a first value, then the state value indicates that i) the bitstream includes for the picture a picture header comprising a set of picture syntax elements and ii) the slice header does not comprise the set of picture syntax elements and b) if the state value is equal to the first value, then the state value indicates that i) the slice header contains said set of picture syntax elements and ii) the bitstream does not include a picture header for the picture; and using the set of picture syntax elements to decode the slice of the picture.

23. 发明申请

WO2021122365A1 OUTPUT PROCESS DISABLE INDICATOR 审中-公开
公开(公告)号：WO2021122365A1
公开(公告)日：2021-06-24
申请号：PCT/EP2020/085723
申请日：2020-12-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , SAFFAR, Davood , PETTERSSON, Martin , DAMGHANIAN, Mitra
IPC分类号： H04N19/85 , H04N19/80 , H04N19/70 , H04N19/44 , H04N19/40
摘要： A decoder can receive a bitstream. The bitstream can include at least one output process syntax element for configuring an output process. The decoder can determine that the output process is disabled. The decoder can decode a current picture from the bitstream. The decoder can, responsive to determining that the output process is disabled, output the current picture as an output picture.

24. 发明申请

WO2021061035A1 PROVIDING SEGMENT PRESENCE INFORMATION 审中-公开
公开(公告)号：WO2021061035A1
公开(公告)日：2021-04-01
申请号：PCT/SE2020/050800
申请日：2020-08-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： PETTERSSON, Martin , DAMGHANIAN, Mitra , SJÖBERG, Rickard
IPC分类号： H04N21/845 , H04N19/18 , H04N19/70 , H04N21/234
摘要： There are provided mechanisms performed by a decoder. The method comprises receiving a bitstream. The method comprises processing the received bitstream, wherein: the bitstream comprises a first part of the bitstream, and the first part of the bitstream provides segment presence information, and further wherein i) the segment presence information indicates that at least segments of a first segment type shall not be present in at least a portion of the bitstream, or ii) the segment presence information indicates that at least segments of the first segment type may be present in at least the portion of the bitstream.

25. 发明申请

WO2020070120A1 PICTURE TILE ATTRIBUTES SIGNALED USING LOOP(S) OVER TILES 审中-公开
公开(公告)号：WO2020070120A1
公开(公告)日：2020-04-09
申请号：PCT/EP2019/076583
申请日：2019-10-01
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , DAMGHANIAN, Mitra , PETTERSSON, Martin
IPC分类号： H04N19/70 , H04N19/174 , H04N19/124
摘要： In encoding a picture, comprising a plurality of tiles, into a bitstream, a method and apparatus is provided for signaling the tile attribute values per-tile, using a compact syntax. These embodiments signal per-tile attribute values using a loop over the tiles. The tile attributes may, for example, be in the form of a set of tile syntax elements (one syntax element per tile attribute), or for example in the form of a set of flags to enable or disable the usage of the tile attributes. These embodiments provide freedom for an encoder to assign the tile attribute values per tile, or per any subset of tiles in a picture, and the attribute values are signaled in a compact syntax using a loop (or loops) over tiles.

26. 发明申请

WO2020070005A1 METHODS OF REFERENCE PICTURE INDICATION FOR VIDEO CODING AND RELATED APPARATUSES 审中-公开
公开(公告)号：WO2020070005A1
公开(公告)日：2020-04-09
申请号：PCT/EP2019/076215
申请日：2019-09-27
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , DAMGHANIAN, Mitra , PETTERSSON, Martin
IPC分类号： H04N19/58 , H04N19/423 , H04N19/70
摘要： There are provided mechanisms for decoding a current picture from a bitstream. The method comprises decoding one or more code words in a loop that is run N times by decoding an indication of whether a picture is a long-term picture or not and deriving a positive integer K[i]>0 for each long-term picture, where i is the index in the loop. Here N is the number of long-term and short-term pictures to keep in the DPB for the current picture. The method comprises deriving an indicator value V[i] for each long-term picture by subtracting the value of the positive integer K[i] from a picture indicator value P of the current picture. The method further comprises, for each of the indicator values V[i], comparing the indicator value V[i] with values associated with pictures stored in the DPB. The method further comprises keeping the pictures stored in the DPB that are marked as short-term or long-term for which there is a match with one of the indicator values V[i] in the DPB as long-term pictures. The method comprises marking long-term pictures for which there is no match with any indicator value V[i] as unused for reference in the DPB.

27. 发明申请

WO2019243539A1 TILE PARTITIONS WITH SUB-TILES IN VIDEO CODING 审中-公开
公开(公告)号：WO2019243539A1
公开(公告)日：2019-12-26
申请号：PCT/EP2019/066400
申请日：2019-06-20
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , DAMGHANIAN, Mitra , ENHORN, Jack , PETTERSSON, Martin
IPC分类号： H04N19/119 , H04N19/96 , H04N19/593 , H04N19/463 , H04N19/174
摘要： An encoder (400), a decoder (450), and methods (20, 30) for partitioning a picture from a sequence of video pictures into a layout having a plurality of flexible tiles or segments is disclosed. Each tile or segment (T) comprises a single rectangular or square region. The encoder generates (22) a partition structure and encodes (28) the tiles according to the partition structure. The encoder also generates a bitstream (12) comprising a plurality of coded segments and information indicating the partition structure used to partition the picture into the plurality of flexible tiles or segments, and sends (29) the bitstream to the decoder. Upon receipt, the decoder uses the coded segments and information in the bitstream to decode (38) the plurality of coded segments.

28. 发明申请

WO2018124957A1 DECODED PICTURE BUFFER MANAGEMENT FOR HANDLING CROSS-PICTURE DATA PREDICTION 审中-公开
公开(公告)号：WO2018124957A1
公开(公告)日：2018-07-05
申请号：PCT/SE2017/051246
申请日：2017-12-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , PETTERSSON, Martin
IPC分类号： H04N19/423 , H04N19/50 , H04N19/70
摘要： Data that is predicted across pictures in a video sequence is managed by separating the data into multiple data types. Instead of keeping all data associated with a decoded picture, such as picture sample values and motion vector data, data associated with a decoded picture is split by data type to enable storing only a subset of all data associated with a decoded picture.

29. 发明申请

WO2017142449A1 METHODS AND DEVICES FOR ENCODING AND DECODING VIDEO PICTURES 审中-公开
标题翻译：用于编码和解码视频图像的方法和设备
公开(公告)号：WO2017142449A1
公开(公告)日：2017-08-24
申请号：PCT/SE2016/050123
申请日：2016-02-17
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： PETTERSSON, Martin , ANDERSSON, Kenneth , WENNERSTEN, Per
IPC分类号： H04N19/51 , H04N19/567 , H04N19/53 , H04N19/54 , H04N19/577
CPC分类号： H04N19/53 , H04N19/172 , H04N19/182 , H04N19/54 , H04N19/567 , H04N19/577 , H04N19/80 , H04N19/85
摘要： A method (20) is disclosed performed in an encoder (40) for encoding video pictures into a video bit stream, the method (20) comprising: obtaining (21) a denoised version (7'; 11', 12') of a reference picture (7; 11, 12); performing (22) a matching procedure at least once, the matching procedure comprising matching a reference matching area (4; 14, 15) of the reference picture (7; 11, 12) to a matching area (3; 15, 14) of a second picture (6; 12, 11) and matching a reference matching area (4'; 14', 15') of the denoised version (7'; 11', 12') to the matching area (3; 15, 14) of the second picture (6; 12, 11), and encoding (23) a block (2; 16) of a current picture (6; 13) by selecting, for the block (2; 16), a first prediction area based on a first reference area (5; 14, 15) of the reference picture (7; 11, 12) or a second prediction area based on a second reference area (5'; 14', 15') of the denoised version (7'; 11', 12'), wherein the prediction area having lowest matching error to the corresponding matching area (3; 15, 14) of the second picture (6; 12, 11) is selected. A corresponding method (30) in a decoder (50) is disclosed, and encoder (40), decoder (50), computer programs and computer program products.
摘要翻译：公开了一种在编码器（40）中执行的用于将视频图片编码为视频比特流的方法（20），所述方法（20）包括：获得（21）去噪版本（7'; （7; 11,12）中的每一个（11,11'，12'）; 执行（22）匹配过程至少一次，所述匹配过程包括将所述参考图片（7; 11,12）的参考匹配区域（4; 14,15）与所述参考图片（7; 11,12）的匹配区域（3; 15,14）进行匹配（7; 11'，12'）的参考匹配区域（4'; 14'，15'）与所述匹配区域（3; 15,14）相匹配的第二图片）通过为所述块（2; 16）选择第一预测区域（6; 12; 11）和对当前图片（6; 13）的块（2; 16）进行编码基于所述降噪版本的所述参考图片（7; 11,12）的第一参考区域（5; 14,15）或基于第二参考区域（5'; 14'，15'）的第二预测区域 7'; 11'，12'），其中选择与第二图片（6; 12,11）的对应匹配区域（3; 15,14）具有最低匹配误差的预测区域。公开了解码器（50）中的相应方法（30），以及编码器（40），解码器（50），计算机程序和计算机程序产品。

30. 发明申请

WO2016195586A1 FILTERING FOR VIDEO PROCESSING 审中-公开
标题翻译：过滤视频处理
公开(公告)号：WO2016195586A1
公开(公告)日：2016-12-08
申请号：PCT/SE2016/050533
申请日：2016-06-03
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： ANDERSSON, Kenneth , STRÖM, Jacob , SAMUELSSON, Jonatan , SJÖBERG, Rickard , PETTERSSON, Martin
IPC分类号： H04N1/64 , H04N19/117 , H04N19/186 , H04N19/51 , H04N19/59 , H04N19/593 , H04N19/85
CPC分类号： H04N19/82 , H04N1/64 , H04N19/117 , H04N19/136 , H04N19/186 , H04N19/51 , H04N19/59 , H04N19/593 , H04N19/85
摘要： It is presented a method for applying a filter on at least one colour component of an input signal used for video processing. The method is performed in a filter device and comprises the steps of: converting the input signal, by applying a first conversion process, to a modified signal, wherein both the input signal and the modified signal are in a spatial domain; filtering the modified signal with a filter, yielding a filtered signal; and converting the filtered signal, by applying a second conversion process, to an output signal, wherein the output signal is in a spatial domain.
摘要翻译：提出了一种在用于视频处理的输入信号的至少一个颜色分量上应用滤波器的方法。该方法在滤波器装置中执行，包括以下步骤：通过应用第一转换处理将输入信号转换成修改信号，其中输入信号和修改信号都在空间域中; 用滤波器对修改的信号进行滤波，产生滤波信号; 以及通过应用第二转换处理将滤波后的信号转换成输出信号，其中输出信号处于空间域。

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