公开(公告)号：US11582491B2

公开(公告)日：2023-02-14

申请号：US17210918

申请日：2021-03-24

Applicant: QUALCOMM Incorporated

Inventor： Hilmi Enes Egilmez ,  Alican Nalci ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/96 ,  H04N19/169 ,  H04N19/186 ,  H04N19/176 ,  H04N19/91

Abstract: An example video codec 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 that a current mode of coding a current block of the video data is a single tree partitioning mode. Based on the current mode being the single tree partitioning mode, the one or more processors are configured to refrain from determining whether there is a non-DC coefficient for a chroma component of a transform unit (TU) for the current block and refrain from coding a low-frequency non-separable transformation (LFNST) index in response to the refraining of the determination of whether there is the non-DC coefficient. The one or more processors are configured to code the current block in the single partitioning mode with LFNST disabled.

公开(公告)号：US11580672B2

公开(公告)日：2023-02-14

申请号：US17224709

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Louis Joseph Kerofsky ,  Bappaditya Ray ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: G06T9/40

Abstract: A method of decoding point cloud data comprises obtaining a bitstream that includes an arithmetically encoded syntax element indicating a vertical point position offset within a node of a tree that represents 3-dimensional positions of points in a point cloud represented by the point cloud data; and decoding the vertical point position offset, wherein decoding the vertical point position offset comprises: determining a laser index of a laser candidate in a set of laser candidates, wherein the determined laser index indicates a laser beam that intersects the node; determining a context index based on whether the laser beam is above a first distance threshold, between the first distance threshold and a second distance threshold, between the second distance threshold and a third distance threshold, or below the third distance threshold; and arithmetically decoding a bin of the vertical point position offset using a context indicated by the determined context index.

公开(公告)号：US11570442B2

公开(公告)日：2023-01-31

申请号：US16893052

申请日：2020-06-04

Applicant: QUALCOMM Incorporated

Inventor： Kevin Pascal Andre Reuze ,  Chun-Chi Chen ,  Wei-Jung Chien ,  Han Huang ,  Marta Karczewicz ,  Vadim Seregin

IPC: H04B1/66 ,  H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/132 ,  H04N19/159 ,  H04N19/105

Abstract: An example video coding device is configured to: code a first set of motion information for a current block of video data partitioned into a first partition and a second partition according to a non-rectangular partition mode, the first set of motion information referring to a reference picture list and being associated with the first partition; after coding the first set of motion information, code a second set of motion information for the current block referring to the reference picture list and that is associated with the second partition; in response to the first set of motion information and the second set of motion information both referring to the reference picture list, store the second set of motion information for the current block; and predict subsequent motion information of a subsequent block of the video data that neighbors the current block using the stored second set of motion information.

公开(公告)号：US11570434B2

公开(公告)日：2023-01-31

申请号：US16998639

申请日：2020-08-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/105 ,  H04N19/176

Abstract: A method of decoding video data includes determining that a geometric partition mode is enabled for a current block of the video data and determining a split line dividing the current block into a first partition and a second partition, where determining the split line comprises selecting an angle for the split line from a plurality of angles, Each angle of the plurality of angles corresponding to an N:M ratio of samples of the current block, where N and M are integers. The split line is not at a corner of the current block. The method further includes determining geometric mode weights for the current block using the angle of the split line, generating a first prediction block using motion information for the first partition, and generating a second prediction block using motion information for the second partition.

公开(公告)号：US11563938B2

公开(公告)日：2023-01-24

申请号：US15432839

申请日：2017-02-14

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Wei-Jung Chien ,  Li Zhang

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/70 ,  H04N19/82 ,  H04N19/463 ,  H04N19/136 ,  H04N19/176 ,  H04N19/80

Abstract: An example device for filtering a decoded block of video data includes one or more processors implemented in circuitry and configured to decode a current block of a current picture of the video data, select a filter (such as an adaptive loop filter) to be used to filter pixels of the current block, calculate a gradient of at least one pixel for the current block, select a geometric transform to be performed on one of a filter support region or coefficients of the selected filter, wherein the one or more processors are configured to select the geometric transform that corresponds to an orientation of the gradient of the at least one pixel, perform the geometric transform on either the filter support region or the coefficients of the selected filter, and filter the at least one pixel of the current block using the selected filter after performing the geometric transform.

公开(公告)号：US20230016033A1

公开(公告)日：2023-01-19

申请号：US17934934

申请日：2022-09-23

Applicant: QUALCOMM Incorporated

Inventor： Amir Said ,  Xin Zhao ,  Wei-Jung Chien ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/61 ,  H04N19/117 ,  H04N19/82 ,  H04N19/593 ,  H04N19/10 ,  H04N19/192 ,  H04N19/436 ,  H04N19/615 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91

Abstract: An example method of decoding video data includes obtaining, from a coded video bitstream and for a current block of the video data, an indication of an intra-prediction mode that identifies an initial predictive block; filtering, in parallel, samples in a current line of a plurality of lines of the initial predictive block based on filtered values of samples in a preceding line of the plurality of lines and unfiltered values of samples in the current line to generate filtered values for samples for the current line; and reconstructing, using intra prediction, values of samples of the current block based on the filtered values of the samples of the current initial predictive block and residual data for the current block that represents a difference between the filtered values of the samples of the current initial predictive block and the values of samples of the current block.

公开(公告)号：US20230007238A1

公开(公告)日：2023-01-05

申请号：US17809167

申请日：2022-06-27

Applicant: QUALCOMM Incorporated

Inventor： Chun-Chi Chen ,  Han Huang ,  Cheng-Teh Hsieh ,  Wei-Jung Chien ,  Zhi Zhang ,  Yao-Jen Chang ,  Yan Zhang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

Abstract: A device for decoding video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: determine a deterministic bounding box from which to retrieve reference samples of reference pictures of video data for performing decoder-side motion vector derivation (DMVD) for a current block of the video data; derive a motion vector for the current block according to DMVD using the reference samples within the deterministic bounding box; form a prediction block using the motion vector; and decode the current block using the prediction block.

公开(公告)号：US20220417563A1

公开(公告)日：2022-12-29

申请号：US17930533

申请日：2022-09-08

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/70 ,  H04N19/13 ,  H04N19/176 ,  H04N19/117 ,  H04N19/46

Abstract: As part of bypass decoding syntax elements for a set of coefficients in response to reaching a maximum number of regular coded bins, a video decoder is configured to receive a prefix value for a transform coefficient; decode the prefix value using Golomb-Rice coding; in response to a length of the prefix value being equal to a threshold value, receive a suffix value for the transform coefficient; decode the suffix value using exponential Golomb coding; and determine a level value for the transform coefficient based on the decoded prefix value and the decoded suffix value.

公开(公告)号：US11533512B2

公开(公告)日：2022-12-20

申请号：US17225801

申请日：2021-04-08

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Yan Zhang ,  Marta Karczewicz

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/169

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.

公开(公告)号：US20220394239A1

公开(公告)日：2022-12-08

申请号：US17662140

申请日：2022-05-05

Applicant: QUALCOMM Incorporated

Inventor： Han Huang ,  Yao-Jen Chang ,  Vadim Seregin ,  Chun-Chi Chen ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70

Abstract: An example device for decoding video data includes one or more processors implemented in circuitry and configured to: generate an inter-prediction block for a current block of video data; generate an intra-prediction block for the current block of video data; generate a final prediction block for the current block of video data from the inter-prediction block and the intra-prediction block, including performing each of combined inter/intra prediction (CIIP) mode, overlapped block motion compensation (OBMC), and luma mapping with chroma scaling (LMCS) while generating the final prediction block; and decode the current block of video data using the final prediction block. To generate the final prediction block, the processors may perform LMCS on a first inter-prediction sub-block, combine the LMCS-mapped first inter-prediction sub-block with the intra-prediction block using CIIP, and perform OBMC between the first CIIP prediction block and a second inter-prediction sub-block.