公开(公告)号：US20220215596A1

公开(公告)日：2022-07-07

申请号：US17562121

申请日：2021-12-27

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/40

Abstract: Techniques are disclosed for coding point cloud data using a scene model. An example device for coding point cloud data includes a 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 or obtain a scene model corresponding with a first frame of the point cloud data, wherein the scene model represents objects within a scene, the objects corresponding with at least a portion of the first frame of the point cloud data. The one or more processors are also configured to code a current frame of the point cloud data based on the scene model.

公开(公告)号：US20220215593A1

公开(公告)日：2022-07-07

申请号：US17566282

申请日：2021-12-30

Applicant: QUALCOMM Incorporated

Inventor： Hongtao Wang ,  Venkata Meher Satchit Anand Kotra ,  Jianle Chen ,  Marta Karczewicz

IPC: G06T9/00 ,  H04N19/90 ,  H04N19/61 ,  H04N19/11

Abstract: An example device for filtering decoded video data includes one or more processors configured to execute a neural network filtering unit to: receive data from one or more other units of the device, the data from the one or more other units of the device being different than data for a decoded picture of video data, and wherein to receive the data from the one or more other units of the device, the one or more processors are configured to execute the neural network filtering unit to receive boundary strength data from a deblocking unit of the device; determine one or more neural network models to be used to filter a portion of the decoded picture; and filter the portion of the decoded picture using the one or more neural network models and the data from the one or more other units of the device, including the boundary strength data.

公开(公告)号：US20220201313A1

公开(公告)日：2022-06-23

申请号：US17645233

申请日：2021-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/137 ,  H04N19/119 ,  H04N19/154 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: A method of decoding video data includes determining that bi-directional optical flow (BDOF) is enabled for a block of the video data; dividing the block into a plurality of sub-blocks based on the determination that BDOF is enabled for the block, determining, for each sub-block of one or more sub-blocks of the plurality of sub-blocks, respective distortion values, determining that one of per-pixel BDOF is performed or BDOF is bypassed for each sub-block of the one or more sub-blocks of the plurality of sub-blocks based on the respective distortion values, determining prediction samples for each sub-block of the one or more sub-blocks based on the determination of per-pixel BDOF being performed or BDOF being bypassed, and reconstructing the block based on the prediction samples.

公开(公告)号：US11356693B2

公开(公告)日：2022-06-07

申请号：US16582939

申请日：2019-09-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513 ,  H04N19/137 ,  H04N19/176 ,  H04N19/91

Abstract: Coding a motion vector difference (MVD) during an inter-prediction process. Example techniques may include determining a particular coding and/or signaling method for an MVD from among two or more MVD coding and/or signaling techniques. A video coder (e.g., a video encoder and/or a video decoder) may determine a particular MVD coding and/or signaling technique based on characteristics of video data or coding methods, including MV precision, Picture Order Count (POC) difference, or any other already coded/decoded information of a block of video data.

公开(公告)号：US11350109B2

公开(公告)日：2022-05-31

申请号：US16999741

申请日：2020-08-21

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/513 ,  H04N19/182 ,  H04N19/107 ,  H04N19/463 ,  H04N19/503 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/186

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.

公开(公告)号：US11330298B2

公开(公告)日：2022-05-10

申请号：US16855462

申请日：2020-04-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/18 ,  H04N19/593 ,  H04N19/169 ,  H04N19/186 ,  H04N19/174

Abstract: This disclosure describes video encoding and video decoding techniques for encoding and decoding video data in a chroma intra prediction mode. The techniques may improve the encoding and decoding process by simplifying aspects of the encoding and decoding process and by reducing a number of binarization tables used for the encoding and decoding. Moreover, reducing the number binarization tables may, in turn, reduce the amount of memory needed in an encoder device or decoder device to perform the video encoding or decoding process.

公开(公告)号：US11310533B2

公开(公告)日：2022-04-19

申请号：US17031238

申请日：2020-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176

Abstract: An example method includes decoding, from an encoded video bitstream, a sequence parameter set (SPS) referred to by one or more pictures of video data, wherein decoding the SPS comprises: parsing, at a first position in the SPS, a syntax element that indicates whether joint coding of chroma residuals is enabled or disabled for the one or more pictures of video data referring to the SPS; and parsing, at a second position in the SPS that is after the first position, one or more syntax elements representing a quantization parameter (QP) mapping table.

公开(公告)号：US11310497B2

公开(公告)日：2022-04-19

申请号：US17078710

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/119 ,  H04N19/167 ,  G06F1/03 ,  H04N19/176 ,  H04N19/159

Abstract: An example device for decoding video data includes a 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 determine a first distance index associated with a first geometric partition mode (GEO) angle for a first prediction unit (PU) of the video data to be 4. The one or more processors are configured to determine a first displacement value based on the first distance index, the first displacement value being indicative of a distance from a center of the first PU to a GEO split. The one or more processors are configured to decode the first PU based on the first GEO angle and the first displacement value. The first displacement value is half of a displacement value associated with a distance index of 2.

公开(公告)号：US11303885B2

公开(公告)日：2022-04-12

申请号：US16663193

申请日：2019-10-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176

Abstract: A device for decoding video data can be configured to determine a size for a block of video data, wherein the block of video data comprises a rectangular, non-square block; determine an intra prediction mode for the block of video data; locate, in a neighboring block of the block of video data, reference samples corresponding to the determined intra prediction mode; in response to the intra prediction mode for the block of video data being a wide-angle intra prediction mode and corresponding to a diagonal direction of the block, filter the reference samples to determine filtered reference samples; generate a predictive block for the block of video data from the filtered reference samples; determine decoded version of the block of video data from the predictive block; and output the decoded version of the block of video data.

公开(公告)号：US20220109816A1

公开(公告)日：2022-04-07

申请号：US17484525

申请日：2021-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N13/161 ,  H04N19/50 ,  H04N19/186 ,  H04N19/70

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.