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71. 发明申请

WO2013074935A1 REFERENCE MODE SELECTION IN INTRA MODE CODING 审中-公开
标题翻译：内部模式编码中的参考模式选择
公开(公告)号：WO2013074935A1
公开(公告)日：2013-05-23
申请号：PCT/US2012/065532
申请日：2012-11-16
申请人： QUALCOMM INCORPORATED
发明人： CHIEN, Wei-Jung , COBAN, Muhammed Zeyd , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/50 , H04N19/11 , H04N19/463 , H04N19/70
摘要： A video coder can determine a first most probable intra prediction mode and a second most probable intra prediction mode for a current video block, and based on the first and second most probable intra prediction modes, determine an estimate of an actual intra prediction mode used to code the current video block. The estimate of the actual intra prediction mode can be determined by selecting one of the first most probable mode and the second most probable mode as the estimate of the actual intra prediction in response to both the first most probable mode and the second most probable mode being different angular prediction modes. The estimate of the actual intra prediction mode plus difference information can be used to identify the actual intra prediction mode used to code the current video block.
摘要翻译：视频编码器可以确定当前视频块的第一最可能的帧内预测模式和第二最可能的帧内预测模式，并且基于第一和第二最可能的帧内预测模式，确定用于对当前视频块进行编码。可以通过选择第一最可能模式和第二最可能模式中的一个作为响应于第一最可能模式和第二最可能模式两者的实际帧内预测的估计来确定实际帧内预测模式的估计不同的角度预测模式。可以使用实际帧内预测模式加差分信息的估计来识别用于对当前视频块进行编码的实际帧内预测模式。

72. 发明申请

WO2022213005A1 PICTURE ORIENTATION AND QUALITY METRICS SUPPLEMENTAL ENHANCEMENT INFORMATION MESSAGE FOR VIDEO CODING 审中-公开
公开(公告)号：WO2022213005A1
公开(公告)日：2022-10-06
申请号：PCT/US2022/071050
申请日：2022-03-09
申请人： QUALCOMM INCORPORATED
发明人： HE, Yong , COBAN, Muhammed Zeyd , RUSANOVSKYY, Dmytro
IPC分类号： H04N19/70 , H04N19/88
摘要： Video encoders and video decoders are configured to supplemental enhancement information (SEI) messages. The SEI messages may include picture orientation transform type syntax elements that indicate how a picture may be rotated and/or mirrored. The SEI messages may also include quality metrics.

73. 发明申请

WO2022055602A1 SENDING FEEDBACK AT RADIO ACCESS NETWORK LEVEL 审中-公开
公开(公告)号：WO2022055602A1
公开(公告)日：2022-03-17
申请号：PCT/US2021/040269
申请日：2021-07-02
申请人： QUALCOMM INCORPORATED
发明人： RICO ALVARINO, Alberto , COBAN, Muhammed Zeyd , PHUYAL, Umesh
IPC分类号： H04L1/18 , H04L1/16 , H04N19/00 , H04L1/00
摘要： Aspects of the present disclosure provide techniques for using a radio access network (RAN) level negative acknowledgement (NAK) feedback to indicate at least one missing frame from an encoding device. The RAN level NAK feedback replaces or preempts a decoding device sending an end-to-end feedback to the encoding device using real-time transport protocol (RTP) that has a long latency and may cause freezes at the decoding device. For example, an encoding device may send to a network entity a request for a configuration that configures the encoding device to transmit media frames to the decoding device. The network entity may provide a NAK feedback indicating at least one missing frame. Having received the configuration in response to the request, the encoding device transmits media frames to the decoding device via the network entity, and monitors for NAK feedback from the network entity in accordance with the configuration.

74. 发明申请

WO2021231291A2 SUB-PICTURE EXTRACTION AND CONSTRAINTS IN VIDEO CODING 审中-公开
公开(公告)号：WO2021231291A2
公开(公告)日：2021-11-18
申请号：PCT/US2021/031566
申请日：2021-05-10
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , HE, Yong , CHANG, Yao-Jen , COBAN, Muhammed Zeyd
IPC分类号： H04N19/17 , H04N19/70 , H04N19/119 , H04N19/167 , H04N19/105 , H04N19/172 , H04N19/174 , H04N19/184 , H04N19/30
摘要： Example techniques and devices for decoding video data are disclosed. An example device includes memory configured to store the video data and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to extract a current sub-picture from a bitstream of the video data and parse virtual boundary syntax elements indicative of virtual boundaries for a current picture, wherein the current sub-picture is associated with the current picture. The one or more processors are configured to update the virtual boundaries based at least in part on the virtual boundary syntax elements and decode the current sub-picture based on the updated virtual boundaries.

75. 发明申请

WO2021183654A1 CODED VIDEO SEQUENCE START ACCESS UNIT IN VIDEO CODING 审中-公开
公开(公告)号：WO2021183654A1
公开(公告)日：2021-09-16
申请号：PCT/US2021/021720
申请日：2021-03-10
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , HE, Yong , COBAN, Muhammed Zeyd
IPC分类号： H04N19/30 , H04N19/61 , H04N19/70 , H04N21/4402
摘要： A video decoder may be configured to output layers of video data according to layers specified in an output layer set mode as well as based on the actual layers received in an access unit. Accordingly, the video coder may be configured to output layers actually received rather than restart a video bitstream in situations where the layers actually received do not match the layers specified in the output layer set mode. In another example, a video encoder may disable inter prediction when the sub-picture ID of a sub-picture in a currently coded picture does not match the sub-picture ID of a sub-picture in a reference picture.

76. 发明申请

WO2021173695A1 SIGNALING CONSTRAINTS AND SEQUENCE PARAMETER SET SHARING IN VIDEO CODING 审中-公开
公开(公告)号：WO2021173695A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/019447
申请日：2021-02-24
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , COBAN, Muhammed Zeyd
IPC分类号： H04N19/30 , H04N19/70
摘要： An example device includes memory configured to store video data and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to determine whether a picture of the video data is an intra random access picture (IRAP) and determine whether all layers of the picture are independent. Based on the picture being an IRAP and all layers of the picture being independent, the one or more processors are configured to determine a value of a first syntax element to be indicative of an inter slice not being allowed in the picture and code the picture without using inter slice prediction.

77. 发明申请

WO2021142116A1 MULTIPLE TRANSFORM SET SIGNALING FOR VIDEO CODING 审中-公开
公开(公告)号：WO2021142116A1
公开(公告)日：2021-07-15
申请号：PCT/US2021/012495
申请日：2021-01-07
申请人： QUALCOMM INCORPORATED
发明人： EGILMEZ, Hilmi Enes , SEREGIN, Vadim , COBAN, Muhammed Zeyd , KARCZEWICZ, Marta
IPC分类号： H04N19/60 , H04N19/70 , H04N19/176 , H04N19/18 , H04N19/44
摘要： A video decoder may be configured to receive a block of video data, and determine a value of a multiple transform set index for the block of video data based on a presence of non-zero transform coefficients in the block of video data other than a DC coefficient. The video decoder may then apply a transform to the block of video data based on the determined value of the multiple transform set index.

78. 发明申请

WO2021133788A1 SHARED DECODER PICTURE BUFFER FOR MULTIPLE LAYERS 审中-公开
公开(公告)号：WO2021133788A1
公开(公告)日：2021-07-01
申请号：PCT/US2020/066583
申请日：2020-12-22
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , RAMASUBRAMONIAN, Adarsh Krishnan , COBAN, Muhammed Zeyd
IPC分类号： H04N19/70 , H04N19/423 , H04N19/31 , H04N19/105 , H04N19/139 , H04N19/172 , H04N19/30 , H04N19/44
摘要： A video decoder for decoding multi-layer video data can be configured to maintain a decoded picture buffer (DPB) for storing reference pictures for a plurality of layers, wherein the plurality of layers comprise at least a first layer and a second layer; prior to decoding a current picture of an access unit of the first layer, perform a picture output and removal process on the DPB, wherein to perform the picture output and removal process on the DPB, the one or more processors are further configured to remove from the DPB only decoded pictures that belong to the first layer; and after removing a last decoding unit of the current picture from a coded picture buffer (CPB), perform a picture bumping process across all layers of the DPB.

79. 发明申请

WO2021127430A1 MOTION COMPENSATION USING SIZE OF REFERENCE PICTURE 审中-公开
公开(公告)号：WO2021127430A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/066004
申请日：2020-12-18
申请人： QUALCOMM INCORPORATED
发明人： SEREGIN, Vadim , CHANG, Yao-Jen , COBAN, Muhammed Zeyd
IPC分类号： H04N19/55 , H04N19/52 , H04N19/61 , H04N19/105 , H04N19/176 , H04N19/503 , H04N19/563 , H04N19/597
摘要： A video coder is configured to determine a reference block of a reference picture for prediction of a current block of a current picture using motion information and to generate a set of reference samples for the current block of the current picture. To generate the set of reference samples, the video coder is configured to perform reference sample clipping on the reference block of the reference picture based on a size of the reference picture. The video coder is further configured to generate a prediction block for the current block of the current picture based on the set of reference samples.

80. 发明申请

WO2021127402A1 COEFFICIENT GROUP BASED RESTRICTION ON MULTIPLE TRANSFORM SELECTION SIGNALING IN VIDEO CODING 审中-公开
公开(公告)号：WO2021127402A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/065963
申请日：2020-12-18
申请人： QUALCOMM INCORPORATED
发明人： COBAN, Muhammed Zeyd , KARCZEWICZ, Marta , EGILMEZ, Hilmi Enes , SEREGIN, Vadim
IPC分类号： H04N19/70 , H04N19/12 , H04N19/176 , H04N19/18 , H04N19/60
摘要： A video coder may determine, for a transform block of video data, that at least one coefficient group, of the transform block, that comprises a non-zero transform coefficient is outside of a lowest frequency region of the transform block, wherein the at least one coefficient group is one of a plurality of coefficient groups that each comprise transform coefficients. The video coder may determine not to code a syntax element indicative of a multiple transform selection (MTS) for the transform block based at least in part on the determination of that the at least one coefficient group is outside of the lowest frequency region of the transform block. The video coder may code the video data based at least in part on the determination not to code the syntax element indicative of the multiple transform selection for the transform block.

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