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公开(公告)号:WO2021178570A2
公开(公告)日:2021-09-10
申请号:PCT/US2021/020720
申请日:2021-03-03
Applicant: QUALCOMM INCORPORATED
Inventor: HE, Yong , SEREGIN, Vadim , COBAN, Muhammed Zeyd , KARCZEWICZ, Marta
IPC: H04N19/70 , H04N19/107 , H04N19/157 , H04N19/169 , H04N19/30 , H04N19/105 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/188 , H04N19/196 , H04N19/597 , H04N21/816 , H04N21/85406
Abstract: An example device for coding video data 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 determine whether a sequence parameter set of the video data refers to a video parameter set. Based on the sequence parameter set not referring to the video parameter set, the one or more processors are configured to determine a value of a first syntax element to be indicative of a profile-tier-layer structure being signaled in the sequence parameter set and code the video data based on the profile-tier-layer structure.
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公开(公告)号:WO2021142239A1
公开(公告)日:2021-07-15
申请号:PCT/US2021/012674
申请日:2021-01-08
Applicant: QUALCOMM INCORPORATED
Inventor: RAY, Bappaditya , RAMASUBRAMONIAN, Adarsh Krishnan , VAN DER AUWERA, Geert , KARCZEWICZ, Marta
IPC: H04N19/70 , H04N19/90 , H04N21/81 , H04N21/854 , H04N21/84 , H04N21/845 , H04N19/174 , H04N19/30 , H04N19/597 , H04N21/816 , H04N21/85406
Abstract: An example device for coding a point cloud includes a memory configured to store the point cloud and one or more processors communicatively coupled to the memory. The one or more processors are configured to determine a value of a numerator syntax element, the value of the numerator syntax element being indicative of a numerator of a scale factor of the point cloud. The one or more processors are configured to determine a value of a denominator syntax element, the value of the denominator syntax element being indicative of a denominator of the scale factor of the point cloud. The one or more processors are configured to process the point cloud at least in part based on the scale factor of the point cloud.
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公开(公告)号:WO2021133816A1
公开(公告)日:2021-07-01
申请号:PCT/US2020/066649
申请日:2020-12-22
Applicant: QUALCOMM INCORPORATED
Inventor: EGILMEZ, Hilmi, Enes , NALCI, Alican , COBAN, Muhammed, Zeyd , KARCZEWICZ, Marta
IPC: H04N19/70 , H04N19/12 , H04N19/157 , H04N19/186 , H04N19/96 , H04N19/176 , H04N19/647
Abstract: An example device includes memory configured to store video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors determine whether a chroma block of the video data is encoded using dual tree partitioning. The one or more processors determine whether transform skip mode for the chroma block is enabled. The one or more processors, based on the chroma block being encoded using dual tree partitioning and transform skip mode being enabled for the chroma block, infer a value of a low-frequency non-separable transform (LFNST) index for the chroma block.
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公开(公告)号:WO2021055781A1
公开(公告)日:2021-03-25
申请号:PCT/US2020/051538
申请日:2020-09-18
Applicant: QUALCOMM INCORPORATED
Inventor: RAMASUBRAMONIAN, Adarsh Krishnan , VAN DER AUWERA, Geert , SEREGIN, Vadim , EGILMEZ, Hilmi Enes , KARCZEWICZ, Marta
IPC: H04N19/61 , H04N19/122 , H04N19/159 , H04N19/18
Abstract: An example device for coding video data includes a 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 determine whether scaling matrices may be applied to a low-frequency non-separable transform (LFNST) coded block. The one or more processors are also configured to, based on a determination that scaling matrices may not be applied to the LFNST coded block, not applying the scaling matrices to the LFNST coded block. The one or more processors are also configured to code the video data without applying the scaling matrices to the LFNST coded block.
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公开(公告)号:WO2021055746A1
公开(公告)日:2021-03-25
申请号:PCT/US2020/051490
申请日:2020-09-18
Applicant: QUALCOMM INCORPORATED
Inventor: RAMASUBRAMONIAN, Adarsh Krishnan , VAN DER AUWERA, Geert , SEREGIN, Vadim , KARCZEWICZ, Marta
IPC: H04N19/119 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: An example device includes a memory and one or more processors. The one or more processors are configured to determine whether a first coding tree unit (CTU) is coded using single tree and based on the first CTU being coded using single tree, determine a first transform unit (TU) based on a first transform block (TB) of luma samples and a first two corresponding TBs of chroma samples. The one or more processors are also configured to determine whether a second CTU is coded using dual tree and based on the second CTU being coded using dual tree, determine a second TU based on either (i) a second TB of luma samples or (ii) a second two TBs of chroma samples. The first TU includes syntax structures used to transform first TB samples and the second TU includes syntax structures used to transform second TB samples.
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公开(公告)号:WO2021026111A1
公开(公告)日:2021-02-11
申请号:PCT/US2020/044817
申请日:2020-08-04
Applicant: QUALCOMM INCORPORATED
Inventor: CHAO, Yung-Hsuan , HUNG, Chao-Hsiung , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC: H04N19/176 , H04N19/593 , H04N19/70
Abstract: An example device for decoding video data includes a memory for storing 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 determine whether a first coding unit (CU) is a skip mode CU, and based on the first CU not being a skip mode CU, determine whether the first CU is encoded using one of an intra mode or a palette mode. The one or more processors are also configured to determine whether the first CU is encoded using the palette mode based on the first CU being encoded using one of the intra mode or the palette mode. The one or more processors are also configured to decode the first CU based on the determination of whether the first CU is encoded using the palette mode.
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公开(公告)号:WO2022147008A1
公开(公告)日:2022-07-07
申请号:PCT/US2021/065343
申请日:2021-12-28
Applicant: QUALCOMM INCORPORATED
Inventor: VAN DER AUWERA, Geert , RAMASUBRAMONIAN, Adarsh Krishnan , RAY, Bappaditya , PHAM VAN, Luong , KARCZEWICZ, Marta
IPC: G06T9/00 , G06T9/40 , H04N19/543 , H04N19/597
Abstract: Techniques are disclosed for coding point cloud data using a scene model. An example device for coding point cloud data includes a memory configured to store the point cloud data and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to determine or obtain a scene model corresponding with a first frame of the point cloud data, wherein the scene model represents objects within a scene, the objects corresponding with at least a portion of the first frame of the point cloud data. The one or more processors are also configured to code a current frame of the point cloud data based on the scene model.
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公开(公告)号:WO2022133121A2
公开(公告)日:2022-06-23
申请号:PCT/US2021/063867
申请日:2021-12-16
Applicant: QUALCOMM INCORPORATED
Inventor: SWAMINATHAN, Siddhartha Goutham , SALEHIN, S M Akramus , PETERS, Nils Günther , MUNOZ, Isaac Garcia
IPC: H04S7/00 , H04S2400/01 , H04S2400/11 , H04S2400/13 , H04S2420/01 , H04S2420/11 , H04S3/008 , H04S7/302 , H04S7/303
Abstract: An example device for processing one or more audio streams includes a memory configured to store the one or more audio streams and one or more processors implemented in circuitry coupled to the memory. The one or more processors are configured to determine a listener position. The one or more processors are also configured to determine one or more clusters of the one or more audio streams. The one or more processors are also configured to determine a rendering mode based on the listener position and the one or more clusters. The device also includes a renderer configured to render at least one of the one or more clusters of audio streams based on the rendering mode.
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公开(公告)号:WO2022072131A1
公开(公告)日:2022-04-07
申请号:PCT/US2021/049661
申请日:2021-09-09
Applicant: QUALCOMM INCORPORATED
Inventor: MUNOZ, Isaac Garcia
Abstract: Example devices, systems and methods for processing audio data are disclosed. An example device includes a memory configured to store one or more speaker feeds 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 boundary separating an interior area from an exterior area exists, and based on the boundary existing, determine a transition distance value, the transition distance value being indicative of a size of a transition zone. The one or more processors are configured to obtain a listener location indicative of a virtual location of the device relative to the interior area and obtain, based at least in part on the boundary and the listener location, a current renderer. The one or more processors are configured to apply, to the audio data, the current renderer to obtain the one or more speaker feeds.
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公开(公告)号:WO2021207589A1
公开(公告)日:2021-10-14
申请号:PCT/US2021/026561
申请日:2021-04-09
Applicant: QUALCOMM INCORPORATED
IPC: H04N19/186 , H04N19/169 , H04N19/70 , H04N19/85
Abstract: An example device for processing video data includes memory configured to store the video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to parse a first parameter set, the first parameter set being signaled in a bitstream data once per sequence of a group of encoded pictures. The one or more processors are configured to parse one or more dynamic range adjustment (DRA) syntax elements in a second parameter set, the second parameter set being signaled in the bitstream and being related to at least one picture in the group of encoded pictures, wherein the parsing of the one or more DRA syntax elements is not dependent on any syntax element of the first parameter set, and process the at least one picture based on the first parameter set and the second parameter set.
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