公开(公告)号：US11388398B2

公开(公告)日：2022-07-12

申请号：US16772424

申请日：2018-01-11

Applicant: QUALCOMM Incorporated

Inventor： Yu Han ,  Kai Zhang ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N19/107 ,  H04N19/176 ,  H04N19/503 ,  H04N19/593

Abstract: A video coding device includes a memory configured to store video data, and processing circuitry in communication with the memory. The processing circuitry is configured to determine that a current block of the video data stored to the memory is to be coded according to a merge mode, and to determine a temporal candidate associated with a merge candidate list for the current block in accordance with the merge mode. The processing circuitry is further configured to determine a pool of spatial candidates associated with the merge candidate list, based on each spatial candidate of the pool having a same reference picture as the temporal candidate, and to set a local illumination compensation (LIC) flag value for the temporal candidate based on respective LIC flag values of one or more spatial candidates of the pool.

公开(公告)号：US20220210466A1

公开(公告)日：2022-06-30

申请号：US17558362

申请日：2021-12-21

Applicant: QUALCOMM Incorporated

Inventor： Luong Pham Van ,  Adarsh Krishnan Ramasubramonian ,  Bappaditya Ray ,  Geert Van der Auwera ,  Marta Karczewicz

IPC: H04N19/527 ,  H04N19/597 ,  H04N19/139 ,  H04N19/177 ,  H04N19/124

Abstract: An example device for coding point cloud data includes a memory configured to store data representing points of a point cloud, and one or more processors implemented in circuitry and configured to: determine height values of points in a point cloud; classify the points into a set of ground points or a set of object points according to the height values; and code the ground points and the object points according to the classifications. The one or more processors may determine top and bottom thresholds and classify the ground and object points according to the top and bottom thresholds. The one or more processors may further code a data structure, such as a geometry parameter set (GPS), including data representing the top and bottom thresholds.

公开(公告)号：US20220210423A1

公开(公告)日：2022-06-30

申请号：US17456080

申请日：2021-11-22

Applicant: QUALCOMM Incorporated

Inventor： Yao-Jen Chang ,  Marta Karczewicz

IPC: H04N19/13 ,  H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/176

Abstract: A video coder may code a block of video data using an intra prediction mode determined from a most probable mode list. The video coder may construct a general most probable mode list containing N entries, wherein the N entries of the general most probable mode list are intra prediction modes, and wherein a planar mode is an ordinal first entry in the general most probable mode list, construct a primary most probable mode list from a first Np entries in the general most probable mode list, where Np is less than N, and construct a secondary most probable mode list from a remaining (N-Np) entries in the general most probable mode list. The video coder may then determine a current intra prediction mode for a current block of video data using the primary most probable mode list or the secondary most probable mode list.

公开(公告)号：US20220201322A1

公开(公告)日：2022-06-23

申请号：US17644519

申请日：2021-12-15

Applicant: QUALCOMM Incorporated

Inventor： Han Huang ,  Kevin Pascal Andre Reuze ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/159 ,  H04N19/137

Abstract: An example device for decoding video data includes one or more processors configured to: determine that a first weight and a second weight are specified for a bi-prediction mode predicted current block of video data; determine whether the current block is to be predicted using multi-hypothesis prediction (MHP) mode with the bi-prediction mode as a base mode; in response to determining that the current block is to be predicted using the MHP mode with the bi-prediction mode as the base mode, determine an additional inter-prediction mode of the MHP mode; generate a first prediction block according to the bi-prediction mode; generate a second prediction block according to the additional inter-prediction mode; generate a final prediction block for the current block according to the MHP mode using the first prediction block and the second prediction block; and decode the current block using the final prediction block.

公开(公告)号：US20220201315A1

公开(公告)日：2022-06-23

申请号：US17556142

申请日：2021-12-20

Applicant: QUALCOMM Incorporated

Inventor： Zhi Zhang ,  Han Huang ,  Chun-Chi Chen ,  Yan Zhang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/157 ,  H04N19/186 ,  H04N19/132 ,  H04N19/513

Abstract: Example devices and techniques for multi-pass decoder-side motion vector refinement (DMVR) are disclosed. An example device includes memory configured to store video data and one or more processors coupled to the memory. The one or more processors are configured to apply a multi-pass DMVR to a motion vector for a block of the video data to determine at least one refined motion vector and decode the block based on the at least one refined motion vector. The multi-pass DMVR includes a block-based first pass, a sub-block-based second pass, and a sub-block-based third pass.

公开(公告)号：US11356685B2

公开(公告)日：2022-06-07

申请号：US17027262

申请日：2020-09-21

Applicant: QUALCOMM Incorporated

Inventor： Yao-Jen Chang ,  Muhammed Zeyd Coban ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/132 ,  H04N19/423 ,  H04N19/186 ,  H04N19/176

Abstract: A video decoder can be configured to decode a first syntax element indicating a size of a coding tree unit (CTU); after decoding the first syntax element indicating the size of the CTU, decode a second syntax element indicating a width of elements of a subpicture identifier grid; after decoding the first syntax element indicating the size of the CTU, decode a third syntax element indicating a height of the elements of the subpicture identifier grid; and determine a location of a subpicture within a picture based on the first syntax element, the second syntax element, and the third syntax element.

公开(公告)号：US11350083B2

公开(公告)日：2022-05-31

申请号：US16847918

申请日：2020-04-14

Applicant: QUALCOMM Incorporated

Inventor： Yao-Jen Chang ,  Chun-Chi Chen ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A method of encoding and decoding video data, including coding a first syntax element that specifies a value used to derive a maximum number of intra block copy merging candidates, deriving the maximum number of intra block copy merging candidates based on the value of the first sytnax element, and coding a first block of video data using intra block copy mode according to the maximum number of intra block copy merging candidates.

公开(公告)号：US11336900B2

公开(公告)日：2022-05-17

申请号：US16912657

申请日：2020-06-25

Applicant: QUALCOMM Incorporated

Inventor： Han Huang ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176

Abstract: Embodiments include methods and apparatus for encoding and decoding video data. In particular, embodiments include methods and apparatus for encoding and decoding video using a combined inter/intra prediction mode. In one such embodiment, the inter prediction is performed using a equal weighted bi-prediction mode determined using a merge mode that would otherwise indicate a non-equal weighted bi-prediction.

公开(公告)号：US11323733B2

公开(公告)日：2022-05-03

申请号：US14719260

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Rajan Laxman Joshi ,  Marta Karczewicz ,  Wei Pu ,  Joel Sole Rojals

IPC: H04N19/105 ,  H04N19/186 ,  H04N19/176 ,  H04N19/50 ,  H04N19/119 ,  H04N19/96 ,  H04N19/157

Abstract: In an example a method of processing video data includes determining a first palette for a first block of video data that is located in a first row of blocks, generating a predictor palette for constructing at least one second palette of at least one second block of video data in the first row of blocks coded, reinitializing the predictor palette for determining a third palette of a third block of video data that is located in a second row of blocks, wherein re-initializing the predictor palette comprises re-initializing the predictor palette based on the one or more palette entries of the first palette or an initial predictor palette generated after coding the first block, determining the third palette of the third block based on the re-initialized predictor palette, and coding the third block using the third palette.

公开(公告)号：US11310519B2

公开(公告)日：2022-04-19

申请号：US17022700

申请日：2020-09-16

Applicant: QUALCOMM Incorporated

Inventor： Bappaditya Ray ,  Han Huang ,  Geert Van der Auwera ,  Marta Karczewicz

IPC: H04N19/51 ,  H04N19/117 ,  H04N19/176

Abstract: An example device for decoding 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 coding mode for a current block of the video data is an affine mode. The one or more processors are also configured to determine whether pattern refined optical flow (PROF) is enabled in the sequence parameter set (SPS) for the current block. Based at least in part on the coding mode for the current block being the affine mode and PROF being enabled in the SPS for the current block, the one or more processors are configured to disable a deblocking filter for subblock boundaries of the current block and decode the current block with the deblocking filter disabled for the subblock boundaries of the current block.