-
公开(公告)号：US11818326B2
公开(公告)日：2023-11-14
申请号：US17316093
申请日：2021-05-10
发明人： Xin Wang , Lulin Chen
IPC分类号： H04N13/161 , H04N13/111 , H04N13/178 , H04N13/194 , H04N19/597
CPC分类号： H04N13/161 , H04N13/111 , H04N13/178 , H04N13/194 , H04N19/597
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode and/or decode video data. Immersive media data includes a set of one or more tracks, each track comprising associated immersive media data corresponding to an associated spatial portion of immersive media content and metadata specifying a six degree of freedom (6DoF) viewing region in the immersive media content, wherein the metadata comprises viewing region type data indicating a type of the viewing region. An encoding and/or decoding operation is performed based on the set of one or more tracks and the viewing region metadata to generate encoded and/or decoded immersive media data. The viewing region type data can be specified by a data structure attribute of the metadata specifying a viewing region and/or by an attribute of the metadata specifying a viewing region.
-
公开(公告)号：US11706374B2
公开(公告)日：2023-07-18
申请号：US17226823
申请日：2021-04-09
发明人： Xin Wang , Lulin Chen
IPC分类号： H04N5/05 , H04N21/435 , H04N21/81 , H04N21/236 , H04N9/82
CPC分类号： H04N5/05 , H04N9/8205 , H04N21/23608 , H04N21/435 , H04N21/816
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to access multimedia data comprising a hierarchical track structure comprising at least a first track at a first level of the hierarchical track structure comprising first media data, wherein the first media data comprises a first sequence of video media units, and a second track at a second level in the hierarchical track structure different than the first level of the first track, the second track comprising metadata specifying a re-timing derivation operation. Output video media units are generated according to the second track, comprising performing the re-timing derivation operation on the first sequence of video media units to modify a timing of the first sequence of video media units by removing one or more video media units associated with the re-timing derivation operation and/or shifting timing information of the first sequence of video media units.
-
公开(公告)号：US11477445B2
公开(公告)日：2022-10-18
申请号：US16726286
申请日：2019-12-24
发明人： Lulin Chen
IPC分类号： H04N19/597 , H04N19/124 , H04N19/117 , H04N19/174 , H04N19/91 , H04N19/159 , H04N19/176
摘要： Methods and apparatuses for processing video data include receiving input data associated with a current video picture, dividing the current video picture into non-overlapping rectangular tiles, grouping the tiles in the current video picture into tile groups, and encoding or decoding video data in the tile groups within the current video picture. According to one embodiment, each tile group is composed of an integer number of tiles, and shapes of all the tile groups are constrained to be rectangle. According to one embodiment, a flag is used to indicate whether one or more in-loop filtering operations are performed across tile group boundaries.
-
公开(公告)号：US11200700B2
公开(公告)日：2021-12-14
申请号：US16738387
申请日：2020-01-09
发明人： Xin Wang , Lulin Chen
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode and/or decode video data. Point cloud video data is received that includes metadata specifying one or more regions of interest of the point cloud video data. A first region of interest is determined from the one or more regions of interest. A portion of the point cloud video data associated with the first region of interest is determined. Point cloud media is generated for viewing by a user based on the determined portion of the point cloud video data associated with the first region of interest.
-
公开(公告)号：US20210360219A1
公开(公告)日：2021-11-18
申请号：US17316093
申请日：2021-05-10
发明人： Xin Wang , Lulin Chen
IPC分类号： H04N13/161 , H04N19/597 , H04N13/178 , H04N13/194 , H04N13/111
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode and/or decode video data. Immersive media data includes a set of one or more tracks, each track comprising associated immersive media data corresponding to an associated spatial portion of immersive media content and metadata specifying a six degree of freedom (6DoF) viewing region in the immersive media content, wherein the metadata comprises viewing region type data indicating a type of the viewing region. An encoding and/or decoding operation is performed based on the set of one or more tracks and the viewing region metadata to generate encoded and/or decoded immersive media data. The viewing region type data can be specified by a data structure attribute of the metadata specifying a viewing region and/or by an attribute of the metadata specifying a viewing region.
-
公开(公告)号：US20200304834A1
公开(公告)日：2020-09-24
申请号：US16821685
申请日：2020-03-17
发明人： Xin Wang , Lulin Chen
IPC分类号： H04N19/597 , H04N19/169 , H04N19/172
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode and/or decode video data. Immersive media data is accessed that comprises a hierarchical track structure comprising at least (a) a first track at a first level of the hierarchical track structure comprising first immersive media elementary data, wherein the first track is a parameter track, and the first immersive media elementary data comprises timed metadata, and (b) a second track at a second level in the hierarchical track structure that is different than the first level of the first track, the second track comprising metadata specifying an immersive media track derivation operation. The immersive media track derivation operation is performed on at least the first immersive media elementary data to generate composite immersive media data for the second track.
-
7.发明申请公开(公告)号：US20200226792A1
公开(公告)日：2020-07-16
申请号：US16738387
申请日：2020-01-09
发明人： Xin Wang , Lulin Chen
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to encode and/or decode video data. Point cloud video data is received that includes metadata specifying one or more regions of interest of the point cloud video data. A first region of interest is determined from the one or more regions of interest. A portion of the point cloud video data associated with the first region of interest is determined. Point cloud media is generated for viewing by a user based on the determined portion of the point cloud video data associated with the first region of interest.
-
公开(公告)号：US20200219536A1
公开(公告)日：2020-07-09
申请号：US16737349
申请日：2020-01-08
发明人： Xin Wang , Lulin Chen
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to access multimedia data comprising a hierarchical track structure with a first track of a first sequence of temporally-related media units at a first level, and a second track at a second level comprising metadata specifying a temporal track derivation operation. The metadata includes a set of one or more operations to perform on the first track, each operation including a unit duration of the first sequence and a start unit in the first sequence. The temporal track derivation operation is performed on a set of media units comprising at least the first sequence, and includes applying the set of one or more operations to temporally modify the first sequence to generate second media data for the second track that includes a second sequence of temporally-related media units from the set of media units.
-
公开(公告)号：US20200014906A1
公开(公告)日：2020-01-09
申请号：US16502560
申请日：2019-07-03
发明人： Xin Wang , Lulin Chen
IPC分类号： H04N13/178 , H04N19/46 , H04N19/44 , H04N5/272 , H04N5/45
摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to decode video data. Video data includes video content, overlay content, and overlay metadata that is specified separate from the video content and overlay content. The overlay content is determined to be associated with the video content based on the overlay metadata. The overlay content is overlaid onto the video content in the region of the video content.
-
公开(公告)号：US20180261254A1
公开(公告)日：2018-09-13
申请号：US15913738
申请日：2018-03-06
发明人： Xin Wang , Lulin Chen , Wang Lin Lai , Shan Liu
CPC分类号： G11B27/32 , G11B27/102 , G11B27/34 , H04N21/4728 , H04N21/816 , H04N21/85406
摘要： Aspects of the disclosure provide an apparatus that includes interface circuitry and processing circuitry. The interface circuitry is configured to receive signals carrying metadata that associates a region of interest in a first visual view provided by a first visual track with the first visual track and a second visual track that provides a second visual view that is a part of the first visual view. The processing circuitry is configured to parse the metadata, determine, when the region of interest is selected, the second visual track to provide visual data, and generate images for the region of interest based on the visual data from the second visual track.
-
-
-
-
-
-
-
-
-
搜索结果
57 条记录 (耗时 0.023 秒)
