公开(公告)号：US20230245384A1

公开(公告)日：2023-08-03

申请号：US18296809

申请日：2023-04-06

Applicant: QUALCOMM Incorporated

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

IPC: G06T17/00 ,  H04N13/161 ,  H04N19/70 ,  H04N19/186 ,  H04N19/50 ,  G06T9/00 ,  G06T19/20

CPC classification number: G06T17/00 ,  H04N13/161 ,  H04N19/70 ,  H04N19/186 ,  H04N19/50 ,  G06T9/00 ,  G06T19/20 ,  G06T2210/36 ,  G06T2219/2016

Abstract: A device for decoding encoded point cloud data can be configured to, for a point of a point cloud, determine a first color value for a first color component based on a first predicted value and a first residual value; apply a scaling factor to the first residual value to determine a predicted second residual value, wherein the scaling factor has one or both of a non-integer value or an absolute value greater than one; for the point of the point cloud, receive a second residual value in the encoded point cloud data; determine a final second residual value based on the predicted second residual value and the received second residual value; and for the point of the point cloud, determine a second color value for a second color component based on a second predicted value and the final second residual value.

公开(公告)号：US11716468B2

公开(公告)日：2023-08-01

申请号：US17128005

申请日：2020-12-19

Applicant: Qualcomm Incorporated

Inventor： Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

Abstract: A device capable of compressing video data includes a memory configured to store a luma new filter value, a chroma new filter value, a cross component Cb new filter value, and a cross component Cr new filter value. The device may also include one or more processors, coupled to the memory, configured to set a joint constraint on the luma new filter value, the chroma new filter value, the cross component Cb new filter value, and the cross component Cr new filter value, such that each of the luma new filter value, the chroma new filter value, the cross component Cb new filter value, and the cross component Cr new filter value are not disabled in a unit associated with an adaptation parameter set having a first adaptation parameter set identification (APS ID).

公开(公告)号：US11711548B2

公开(公告)日：2023-07-25

申请号：US16153652

申请日：2018-10-05

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Wei-Jung Chien

IPC: H04N19/85 ,  H04N19/46 ,  H04N19/117 ,  H04N19/44 ,  H04N19/80

CPC classification number: H04N19/85 ,  H04N19/117 ,  H04N19/44 ,  H04N19/46 ,  H04N19/80

Abstract: Systems and methods of filtering video data using a plurality of filters are disclosed. In an embodiment, a method includes receiving and decoding a plurality of filters embedded in a video data bitstream at a video decoder. The method includes selecting, based on information included in the video data bitstream, a particular filter of the plurality of filters. The method further includes applying the particular filter to at least a portion of decoded video data of the video data bitstream to produce filtered decoded video data.

公开(公告)号：US20230230290A1

公开(公告)日：2023-07-20

申请号：US18155480

申请日：2023-01-17

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40

CPC classification number: G06T9/40

Abstract: A method comprises: for each of a plurality of dimensions: identifying a reference position for the dimension, the reference position for the dimension being a position in a reference frame for the respective dimension, and the reference frame for the respective dimension and a reference frame for at least one other dimension in the plurality of dimensions being different reference frames in a plurality of reference frames; identifying an inter predictor for the respective dimension, wherein a predictor has a coordinate value in the respective dimension corresponding to a coordinate value in the respective dimension of the inter predictor for the respective dimension; and encoding or decoding the current point based on the predictor.

公开(公告)号：US20230217012A1

公开(公告)日：2023-07-06

申请号：US18068809

申请日：2022-12-20

Applicant: QUALCOMM Incorporated

Inventor： Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70 ,  H04N19/159

Abstract: A video decoder may be configured to generate a first ordering of reference pictures in a reference picture list for a first block of a slice, wherein generating the first ordering of the reference pictures for the first block comprises assigning indexes to the reference pictures; and generate a second ordering of the reference pictures in the reference picture list for a second block of the slice based on an adaptive reference picture reordering process, wherein the first ordering is different than the second ordering and generating the second ordering of reference pictures for the second block comprises assigning at least some of the indexes to different reference pictures than in the first ordering; decode the first block using the first ordering of the reference pictures; and decode the second block using the second ordering of the reference pictures.

公开(公告)号：US20230199226A1

公开(公告)日：2023-06-22

申请号：US18168925

申请日：2023-02-14

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Marta Karczewicz ,  Muhammed Zeyd Coban

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

CPC classification number: 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：US20230199211A1

公开(公告)日：2023-06-22

申请号：US18057500

申请日：2022-11-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/109 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/503 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/109 ,  H04N19/172 ,  H04N19/176

Abstract: A video encoder and video decoder may determine to enable or disable a template-based inter prediction technique based on whether reference picture resampling or weighted prediction are used. A video encoder and video decoder may determine that a reference picture resampling mode is enabled. determine not to apply a template-based inter prediction technique to the video data based on the reference picture resampling mode being enabled, and code the video data using inter prediction without applying the template-based inter prediction technique.

公开(公告)号：US11683517B2

公开(公告)日：2023-06-20

申请号：US17101687

申请日：2020-11-23

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/56 ,  H04N19/70 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/56 ,  H04N19/70

Abstract: A method of decoding video data may comprise decoding data from an encoded bitstream to generate motion vectors and performing a decoder-side motion vector refinement (DMVR) process on one or more of the motion vectors. Performing the DMVR process may include determining one or more characteristics of current video block being decoded and determining a search area for the DMVR process for the current video block based on the determined one or more characteristics of the current video block.

公开(公告)号：US11683489B2

公开(公告)日：2023-06-20

申请号：US17132836

申请日：2020-12-23

Applicant: QUALCOMM Incorporated

Inventor： Yung-Hsuan Chao ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/157 ,  H04N19/70 ,  H04N19/186

CPC classification number: H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method of decoding video data includes determining that a current block of the video data is coded in palette mode, determining, between single tree or dual tree partitioning, that the current block is coded with single tree partitioning enabled, determining that the current block is coded in monochrome format, when the current block is coded with single tree partitioning enabled and when the current block is coded in monochrome format, determining that a number of color components used for palette mode decoding the current block is equal to one, and palette mode decoding the current block based on the determined number of color components used for palette mode decoding the current block being equal to one.

公开(公告)号：US20230177739A1

公开(公告)日：2023-06-08

申请号：US18060208

申请日：2022-11-30

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40 ,  G06T7/246

CPC classification number: G06T9/40 ,  G06T7/246 ,  G06T2207/10028

Abstract: A method of decoding point cloud data comprises: determining that the point cloud data is split into a plurality of largest prediction units (LPUs), wherein at least two of the LPUs have different sizes along different directions; performing inter prediction to determine predicted points for the LPUs; and reconstructing points within the LPUs based on the predicted points for the LPUs.