公开(公告)号：US11695940B2

公开(公告)日：2023-07-04

申请号：US17653086

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/159 ,  H04N19/11

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/159

Abstract: A video coder performs a Most-Probable Mode (MPM) derivation process that derives one or more MPMs for a current block that is not coded using affine linear weighted intra prediction (ALWIP). As part of performing the MPM derivation process, the video coder determines whether a neighboring block of the current block is an ALWIP-coded neighboring block. Based on the neighboring block being an ALWIP-coded neighboring block, the video coder determines that a value of an intra prediction mode of the neighboring block is a value indicating a planar mode. The video coder codes the current block based on one of the MPMs for the current block.

公开(公告)号：US11689740B2

公开(公告)日：2023-06-27

申请号：US17454456

申请日：2021-11-10

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Yu-Chen Sun ,  Li Zhang ,  Sungwon Lee ,  Xiang Li ,  Hsiao-Chiang Chuang ,  Jianle Chen ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/44 ,  H04N19/176 ,  H04N19/54 ,  H04N19/593

CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/44 ,  H04N19/54 ,  H04N19/70 ,  H04N19/593

Abstract: A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.

公开(公告)号：US11677984B2

公开(公告)日：2023-06-13

申请号：US16993785

申请日：2020-08-14

Applicant: QUALCOMM Incorporated

Inventor： Hilmi Enes Egilmez ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/61 ,  H04N19/593 ,  H04N19/176 ,  H04N19/18

CPC classification number: H04N19/61 ,  H04N19/176 ,  H04N19/18 ,  H04N19/593

Abstract: A method of decoding video data includes receiving encoded data for a current block and decoding N bins for a low-frequency non-separable transform (LFNST) index from the encoded data. The N bins comprises a first bin and a second bin. Decoding the N bins comprises context decoding each bin of the N bins. The method further includes determining the LFNST index using the N bins and decoding the encoded data to generate transform coefficients. The method further includes applying an inverse LFNST to the transform coefficients using the LFNST index to produce a residual block for the current block and reconstructing the current block of the video data using the residual block and a prediction block for the current block.

公开(公告)号：US11657543B2

公开(公告)日：2023-05-23

申请号：US17224674

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/20

CPC classification number: G06T9/20

Abstract: An example device for processing point cloud data includes a memory configured to store the point cloud data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to count a number of edges of a cube of point cloud data comprising a vertex. The one or more processors are configured to set a variable based on a total of the counting. The one or more processors are also configured to process the point cloud data based on the variable.

公开(公告)号：US11647194B2

公开(公告)日：2023-05-09

申请号：US17817894

申请日：2022-08-05

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Vadim Seregin ,  Marta Karczewicz ,  Jianle Chen

IPC: H04N19/159 ,  H04N19/593 ,  H04N19/124 ,  H04N19/61 ,  H04N19/176 ,  H04N19/12 ,  H04N19/103

CPC classification number: H04N19/124 ,  H04N19/103 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

Abstract: Example techniques are described to illustrate multiple transform applied for Intra prediction residual. It may be used in the context of advanced video codecs, such as extensions of HEVC or the next generation of video coding standards. A video encoder and a video decoder may select transform subsets that each identify one or more candidate transforms. The video encoder and the video decoder may determine transforms from the selected transform subsets.

公开(公告)号：US11638036B2

公开(公告)日：2023-04-25

申请号：US17220829

申请日：2021-04-01

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Marta Karczewicz ,  Muhammed Zeyd Coban

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46

Abstract: An example device includes memory and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to receive a first slice header syntax element for a slice of the video data and determine a first value for the first slice header syntax element, the first value being indicative of whether dependent quantization is enabled. The one or more processors are configured to receive a second slice header syntax element for the slice of the video data and determine a second value for the second slice header syntax element, the second value being indicative of whether sign data hiding is enabled. The one or more processors are configured to determine whether transform skip residual coding is disabled for the slice based on the first value and the second value and decode the slice based on the determinations.

公开(公告)号：US11611759B2

公开(公告)日：2023-03-21

申请号：US16879462

申请日：2020-05-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/119 ,  H04N19/139

Abstract: An example device for coding video data determines for a first block of the video data whether to use a sub-block merge mode. Based on the determination not to use the sub-block merge mode for the first block, the device determines whether to use a merge mode with blending for the first block. Based on the determination to use the merge mode with blending for the first block, the device codes the first block with the merge mode with blending.

公开(公告)号：US20230018907A1

公开(公告)日：2023-01-19

申请号：US17810106

申请日：2022-06-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/159 ,  H04N19/109 ,  H04N19/13 ,  H04N19/196 ,  H04N19/105 ,  H04N19/172 ,  H04N19/167

Abstract: An example device for coding point cloud data includes a memory configured to store point cloud data; and one or more processors implemented in circuitry and configured to: determine whether inter prediction data is coded for a current node of an octree of the point cloud data; determine whether planar mask data is coded for the current node; when at least one of the inter prediction data or the planar mask data is coded for the current node, avoid coding a single occupancy value for the current node, the single occupancy value indicating whether only a single sub-node of the current node includes a point; and code the current node. The processors may also be configured to determine a context for entropy coding the planar mask data according to planar mask data for a collocated node in a reference frame when the planar mask data is coded.

公开(公告)号：US20230010528A1

公开(公告)日：2023-01-12

申请号：US17857558

申请日：2022-07-05

Applicant: QUALCOMM Incorporated

Inventor： Louis Joseph Kerofsky ,  Dmytro Rusanovskyy ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/18 ,  H04N19/176 ,  H04N19/70

Abstract: A device for decoding video data receives encoded video data encoded at a first bit-depth; receives in an encoded video bitstream for the video data one or more syntax elements; determines a dequantization shift and a mid-transform shift based on the one or more syntax elements; and performs an inverse transform of the encoded video data at a second bit-depth using the dequantization shift and the mid-transform shift to determine residual values for a block of video data, wherein the second bit-depth is different than the first bit-depth.

公开(公告)号：US11539952B2

公开(公告)日：2022-12-27

申请号：US16815920

申请日：2020-03-11

Applicant: QUALCOMM Incorporated

Inventor： Hilmi Enes Egilmez ,  Amir Said ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/122 ,  H04N19/593 ,  H04N19/176 ,  H04N19/61

Abstract: An example method includes inferring, for a current transform block of a current video block, a transform type from a plurality of transform types that includes one or more discrete cosine transforms (DCTs) and one or more discrete sine transforms (DSTs), wherein inferring the transform type comprises: determining a size of the current transform block; determining whether the current video block is partitioned using intra-subblock partitioning (ISP); and responsive to determining that the size of the current transform block is less than a threshold and that the current video block is partitioned using ISP, selecting a particular DST of the one or more DSTs as the selected transform type; transforming, using the selected transform type, the current transform block to obtain a block of reconstructed residual data for the video block; and reconstructing, based on the reconstructed residual data for the video block, the video block.