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公开(公告)号：US20230156224A1
公开(公告)日：2023-05-18
申请号：US18154449
申请日：2023-01-13
Applicant: TENCENT AMERICA LLC
Inventor： Xin ZHAO , Sehoon YEA , Shan LIU
Abstract: A Method of decoding an encoded video bitstream using at least one processor includes: obtaining an encoded video bitstream, the encoded video bitstream including encoded color components; entropy parsing the encoded color components; dequantizing the color components and obtaining transform coefficients of the color components; applying a joint components secondary transform (JCST) on the transform coefficients of the color components, thereby generating JCST outputs; performing a backward transform on the JCST outputs, thereby obtaining residual components of the color components; and decoding the encoded video bitstream based on the residual components of the color components.
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2.发明申请公开(公告)号：US20230085672A1
公开(公告)日：2023-03-23
申请号：US18070028
申请日：2022-11-28
Applicant: TENCENT AMERICA LLC
Inventor： Sehoon YEA , Yixin DU , Xin ZHAO , Shan LIU
IPC: H04N19/44 , H04N19/117 , H04N19/176 , H04N19/105 , H04N19/159 , H04N19/82
Abstract: A method of video decoding includes determining directionality information of a restoration filter unit included in a video frame based on directionality of each of one or more groups of pixels in the restoration filter unit determined by at least one of a previously performed CDEF process or a previously performed intra prediction coding process. The method also includes selecting, based on the directionality information of the restoration filter unit, a set of filter parameters from among a plurality of sets of filter parameters of a restoration filter process, and, after the at least one of the previously performed CDEF process or the previously performed intra prediction coding process, performing one of a Wiener filter process or a self-guided projection filter process as the restoration filter process on the restoration filter unit based on the selected set of filter parameters.
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公开(公告)号：US20220167016A1
公开(公告)日：2022-05-26
申请号：US17669023
申请日：2022-02-10
Applicant: TENCENT AMERICA LLC
Inventor： Xiang ZHANG , Wen GAO , Sehoon YEA , Shan LIU
IPC: H04N19/597 , H04N19/169 , H04N19/174
Abstract: A method of point cloud geometry decoding in a point cloud decoder can include receiving a bitstream including a slice of a coded point cloud frame, and reconstructing an octree representing a geometry of points in a bounding box of the slice where a current node of the octree is partitioned with a quadtree (QT) partition or a binary tree (BT) partition.
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公开(公告)号：US20200304823A1
公开(公告)日：2020-09-24
申请号：US16823994
申请日：2020-03-19
Applicant: TENCENT AMERICA LLC
Inventor： Sehoon YEA , Arash VOSOUGHI , Shan LIU
IPC: H04N19/51 , H04N19/597 , H04N19/132
Abstract: A method of point cloud attribute coding includes calculating a motion-estimating uncertainty value based on geometry data associated with a point cloud; identifying one or more inter-frame nearest neighbor point cloud samples corresponding to the point cloud in response to a determination that the motion-estimating uncertainty value is less than a threshold value; ranking one or more temporal candidate points associated with the one or more identified inter-frame nearest neighbor point cloud samples based on the motion-estimation uncertainty value; and extracting one or more sample attribute values from the one or more temporal candidate points, whereby the one or more sample attribute values correspond to the geometry data.
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公开(公告)号：US20200279130A1
公开(公告)日：2020-09-03
申请号：US16803651
申请日：2020-02-27
Applicant: Tencent America LLC
Inventor： Arash VOSOUGHI , Sehoon YEA , Shan LIU
Abstract: Aspects of the disclosure provide methods and apparatuses for point cloud compression and decompression. In some examples, an apparatus for point cloud compression/decompression includes processing circuitry. For example, the apparatus is for point cloud decompression. The processing circuitry decodes prediction information of an image from a coded bitstream corresponding to a point cloud. The prediction information indicates that the image includes a plurality of missed points from at least a patch for the point cloud, and the plurality of missed points are arranged in the image according to a non-jumpy scan. Then, the processing circuitry reconstructs the plurality of missed points from the image according to the non-jumpy scan.
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Patent Agency Ranking
公开(公告)号：US20200221139A1
公开(公告)日：2020-07-09
申请号：US16738287
申请日：2020-01-09
Applicant: TENCENT AMERICA LLC
Inventor： Arash VOSOUGHI , Sehoon YEA , Shan LIU , Byeongdoo CHOI , Stephan WENGER
IPC: H04N19/91 , H04N19/172 , H04N19/119 , H04N19/167
Abstract: A method of dynamic point cloud partition packing is by at least one processor and includes obtaining one or more region of interest (ROI) patches from an ROI of a point cloud, and attempting to pack, into one among tiles of a tile map, one among the obtained one or more ROI patches, in a tile scan order. The method further includes identifying whether the one among the one or more ROI patches is packed successfully into the one among the tiles, and based on the one among the one or more ROI patches being determined to be not packed successfully into the one among the tiles, chunking the one among the one or more ROI patches into multiple ROI patches.
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公开(公告)号：US20250039455A1
公开(公告)日：2025-01-30
申请号：US18916112
申请日：2024-10-15
Applicant: Tencent America LLC
Inventor： Xin ZHAO , Sehoon YEA , Shan LIU
Abstract: An example method of decoding an encoded video bitstream using at least one processor includes obtaining an encoded video bitstream, the encoded video bitstream including encoded color components. The method also includes entropy parsing the encoded color components and dequantizing the color components and obtaining transform coefficients of the color components. The method further includes applying a joint components secondary transform (JCST) on the transform coefficients of the color components, thereby generating JCST outputs. The method also includes performing a backward transform on the JCST outputs, thereby obtaining residual components of the color components; and decoding the encoded video bitstream based on the residual components of the color components.
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公开(公告)号：US20240155113A1
公开(公告)日：2024-05-09
申请号：US18418094
申请日：2024-01-19
Applicant: TENCENT AMERICA LLC
Inventor： Sehoon YEA , Xin Zhao , Shan Liu
IPC: H04N19/105 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/513 , H04N19/53
CPC classification number: H04N19/105 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/521 , H04N19/53
Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. An apparatus includes processing circuitry that decodes a video bitstream to obtain a reduced-resolution residual block for a current block. The processing circuitry determines that a block level flag is set to a pre-defined value. The pre-defined value indicates that the current block is coded in reduced-resolution coding. Based on the block level flag, the processing circuitry generates a reduced-resolution prediction block for the current block by down-sampling a full-resolution reference block of the current block. The processing circuitry generates a reduced-resolution reconstruction block for the current block based on the reduced-resolution prediction block and the reduced-resolution residual block. The processing circuitry generates a full-resolution reconstruction block for the current block by up-sampling the reduced-resolution reconstruction block.
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公开(公告)号：US20230345046A1
公开(公告)日：2023-10-26
申请号：US18340274
申请日：2023-06-23
Applicant: TENCENT AMERICA LLC
Inventor： Xiang ZHANG , Wen GAO , Sehoon YEA , Shan LIU
IPC: H04N19/597 , H04N19/169 , H04N19/174
CPC classification number: H04N19/597 , H04N19/1883 , H04N19/174
Abstract: In a method for point cloud processing, a bitstream corresponding to a sequence of coded point cloud frames is received. Whether an implicit geometry partition is enabled for the sequence of coded point cloud frames is determined. An octree representing a geometry of points in a bounding box in a coded point cloud frame in the sequence of coded point cloud frames is reconstructed based on whether the implicit geometry partition is determined to be enabled for the sequence of coded point cloud frames.
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公开(公告)号：US20220335658A1
公开(公告)日：2022-10-20
申请号：US17857835
申请日：2022-07-05
Applicant: TENCENT AMERICA LLC
Inventor： Shuai ZHAO , Iraj SODAGAR , Shan LIU , Byeongdoo CHOI , Sehoon YEA , Arash VOSOUGHI
IPC: G06T9/40 , H04N19/184 , G06T17/00 , H04N19/96
Abstract: A method of obtaining a tree-based point cloud compression (PCC) media stream using moving picture experts group (MPEG)-dynamic adaptive streaming over http (DASH), is performed by at least one processor and includes obtaining, from a server, a media representation description (MPD) comprising a PCC uniform resource indicator (URI) and a PCC three-dimensional (3D) descriptor, and determining whether the PCC URI comprised in the obtained MPD indicates that the tree-based PCC media stream is to be accessed. The method further includes, based on the PCC URI being determined to indicate that the tree-based PCC media stream is to be accessed, obtaining, from the server, the tree-based PCC media stream, using the PCC 3D descriptor comprised in the obtained MPD.
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