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：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：US20220351420A1

公开(公告)日：2022-11-03

申请号：US17659219

申请日：2022-04-14

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00 ,  G06T17/00 ,  G01S17/89

Abstract: An example device for processing a point cloud includes: a memory configured to store at least a portion of the point cloud; and one or more processors implemented in circuitry and configured to: obtain planar information of a reference block of the point cloud; determine, based on the planar information of the reference block, a context; context-adaptive code, based on the context, a syntax element that indicates whether a current node is coded using a planar mode; code, based on the current node being coded using the planar mode, the current node using the planar mode.

公开(公告)号：US20220321913A1

公开(公告)日：2022-10-06

申请号：US17657867

申请日：2022-04-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/136 ,  H04N19/30 ,  H04N19/124 ,  H04N19/184 ,  H04N19/156 ,  H04N19/105

Abstract: A method of decoding point cloud data comprises obtaining a bitstream that is encoded to comply with one or more constraints and decoding the bitstream, wherein decoding the bitstream comprises: determining a residual value of a first component of an attribute of a point; generating a predicted value of a second component of the attribute of the point; and reconstructing the second component as a sum of the predicted value of the second component and a multiplication product of a scale factor for the second component and the residual value of the first component, wherein the constraints include a constraint that limits the first component of the attribute of the point, the residual value of the first component of the attribute of the point, the second component of the attribute, and the residual value of the second component of the attribute of the point to one or more predefined bitdepths.

公开(公告)号：US11388441B2

公开(公告)日：2022-07-12

申请号：US14657617

申请日：2015-03-13

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Adarsh Krishnan Ramasubramonian ,  Ye-Kui Wang ,  Vadim Seregin

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/124 ,  H04N19/187 ,  H04N19/46 ,  H04N19/60 ,  H04N19/172 ,  H04N19/31 ,  H04N19/169

Abstract: According to certain aspects, an apparatus for coding video information includes a memory and a processor configured to determine whether a first syntax element is present in a bitstream, the first syntax element associated with a sequence parameter set (SPS) and a first flag indicative of whether a temporal identifier (ID) of a reference picture for pictures that refer to the SPS can be nested; and in response to determining that the first syntax element is not present in the bitstream: obtain a second syntax element indicative of a maximum number of temporal sub-layers in a particular layer of the plurality of layers; and determine whether to set the first flag equal to a second flag indicative of whether a temporal ID of a reference picture for any pictures can be nested based at least in part on a value of the second syntax element.

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：US11303913B2

公开(公告)日：2022-04-12

申请号：US16903996

申请日：2020-06-17

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Muhammed Zeyd Coban ,  Adarsh Krishnan Ramasubramonian

IPC: H04N19/423 ,  H04N19/136 ,  H04N19/172 ,  H04N19/103 ,  H04N19/503 ,  H04N19/70

Abstract: A video decoder is configured to remove pictures from a decoded picture buffer based on the value of an explicitly coded syntax element. A video decoder may be configured to decode a syntax element indicating a picture to remove from a decoded picture buffer, and remove the first picture from the DPB. The video decoder may then decode a current picture, and store the decoded current picture in the DPB.

公开(公告)号：US11303912B2

公开(公告)日：2022-04-12

申请号：US16385469

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Marta Karczewicz

IPC: H04N19/14 ,  H04N19/44 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  G06T5/00 ,  G06T5/50

Abstract: The disclosure describes example of performing an inverse dynamic range adjustment (DRA) to a picture as part of outputting the picture from memory. A device for decoding video data includes a memory configured to store a picture in a DRA domain and a processor configured to determine that the picture in the dynamic range adjustment (DRA) domain stored in the memory is to be output from the memory, subsequent to determining that the picture in the DRA domain is to be output, perform a process of outputting the picture in the DRA domain, and at the process of outputting the picture in the DRA domain from the memory, apply inverse DRA to the picture.

公开(公告)号：US20220109884A1

公开(公告)日：2022-04-07

申请号：US17482012

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N13/161 ,  H04N19/31

Abstract: Example devices and techniques are disclosed for incorporating temporal identification information in geometry point cloud compression syntax structures. An example device for decoding point cloud data includes 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 a value of a temporal identifier (ID) of a syntax structure and decode the point cloud data based on the value of the temporal ID. The temporal ID of the syntax structure identifies a temporal layer to which point cloud data associated with the syntax structure belongs.

公开(公告)号：US20220108492A1

公开(公告)日：2022-04-07

申请号：US17480423

申请日：2021-09-21

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40

Abstract: A method of encoding point cloud data comprises storing, in a buffer, a maximum coordinate of a pair of coordinates of an applicable node, wherein the applicable node is a most-recently encoded node with a same position as a current node along an applicable axis and the pair of coordinates are for axes different from the applicable axis; determining a context for a planar mode plane position of the current node, wherein determining the context for the planar mode plane position comprises determining, based on the maximum coordinate of the pair of coordinates of the applicable node, a distance value representing a distance between the current node and the applicable node; determining an increment value that indicates whether the distance value is greater than a threshold; and determining the context index based on the increment value; and entropy encoding the planar mode plane position using the determined context.