公开(公告)号：US20210099732A1

公开(公告)日：2021-04-01

申请号：US17031238

申请日：2020-09-24

申请人： QUALCOMM Incorporated

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

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

摘要： 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：US20210058622A1

公开(公告)日：2021-02-25

申请号：US16998665

申请日：2020-08-20

申请人： QUALCOMM Incorporated

发明人： Dmytro Rusanovskyy ,  Bappaditya Ray ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC分类号： H04N19/132 ,  H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/186 ,  H04N19/176

摘要： A method of decoding video data includes generating a prediction block for a current block of the video data and decoding a residual block for the current block of the video data. The method includes combining the prediction block and the residual block to generate a reconstructed block of the video data and determining a variable M×N sample pattern based on a block size of the current block. The method includes estimating a local luma level for samples of the reconstructed block using the variable M×N sample pattern and applying, based on the estimated local luma level, a deblocking filter to the samples of the reconstructed block to generate filtered samples. The method includes generating final samples of the video data based on the filtered samples.

公开(公告)号：US20210044828A1

公开(公告)日：2021-02-11

申请号：US16947489

申请日：2020-08-04

申请人： QUALCOMM Incorporated

发明人： Luong Pham Van ,  Han Huang ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Cheng-Teh Hsieh ,  Wei-Jung Chien ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/593 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

摘要： A video decoder can be configured to determine that a block of the video data is formatted in accordance with a 4:4:4 video coding format; determine that the block of the video data is encoded in an intra prediction mode; determine that a smallest chroma intra prediction unit (SCIPU) is disabled for the block in response to determining that the block has the 4:4:4 video coding format; decode the block of the video data based on the determination that the SCIPU is disabled; and output decoded video data comprising a decoded version of the block.

公开(公告)号：US20200288159A1

公开(公告)日：2020-09-10

申请号：US16810680

申请日：2020-03-05

申请人： QUALCOMM Incorporated

发明人： Geert Van der Auwera ,  Bappaditya Ray ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban ,  Luong Pham Van ,  Marta Karczewicz

IPC分类号： H04N19/44 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159

摘要： A video decoder may apply a first inverse residual modification function to first decoded modified chroma residual data to generate first inverse modified chroma residual data. Additionally, the video decoder may apply a second inverse residual modification function to second decoded modified chroma residual data to generate second inverse modified chroma residual data. The first decoded modified chroma residual data is associated with a first chroma component and the second decoded modified chroma residual data is associated with a second chroma component. The video decoder may reconstruct a block of video data based on the first inverse modified chroma residual data and the second inverse modified chroma residual data.

公开(公告)号：US10757385B2

公开(公告)日：2020-08-25

申请号：US15684732

申请日：2017-08-23

申请人： QUALCOMM Incorporated

发明人： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N9/67 ,  H04N21/81 ,  H04N21/485 ,  H04N21/41 ,  H04N21/4402 ,  H04N21/4363 ,  H04N21/658 ,  G09G5/00 ,  G09G5/04 ,  G09G5/02 ,  H04N5/235 ,  H04N19/117 ,  H04N19/124 ,  H04N19/176 ,  H04N19/44 ,  G09G3/20

摘要： In general, this disclosure describes techniques for communicating preferred color gamut settings from a sink device to a source device. The source device may send, through a video interface, first video data to the sink device, which receives the first video data through the video interface. The sink device may then send, through a feedback channel of the video interface, preferred color gamut settings of the sink device to the source device. The preferred color gamut settings may be for content received from the source device. The source device may adapt second video data using the preferred color gamut settings. The source device may then send, through the video interface, the second video data adapted to the preferred color gamut settings to the sink device.

公开(公告)号：US20200221099A1

公开(公告)日：2020-07-09

申请号：US16718594

申请日：2019-12-18

申请人： QUALCOMM Incorporated

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

IPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176

摘要： A video coder is configured to determine a split type of a block of video data from an intra prediction mode associated with a neighboring block. The video coder may determine an intra prediction mode associated with a neighboring block of the current block of video data, determine a split type of the current block of video data based on the intra prediction mode associated with the neighboring block, split the current block of video data into a plurality of sub-partitions based on the determined split type, and code the plurality of sub-partitions.

公开(公告)号：US10536695B2

公开(公告)日：2020-01-14

申请号：US15260148

申请日：2016-09-08

申请人： QUALCOMM Incorporated

发明人： Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Sungwon Lee ,  Joel Sole Rojals ,  Done Bugdayci Sansli ,  Marta Karczewicz

IPC分类号： H04N19/186 ,  H04N19/124

摘要： In an example, a method of processing video may include receiving a bitstream including encoded video data and a colour remapping information (CRI) supplemental enhancement information (SEI) message. The CRI SEI message may include information corresponding to one or more colour remapping processes. The method may include decoding the encoded video data to generate decoded video data. The method may include applying a process that does not correspond to the CRI SEI message to the decoded video data before applying at least one of the one or more colour remapping processes to the decoded video data to produce processed decoded video data.

公开(公告)号：US20190335184A1

公开(公告)日：2019-10-31

申请号：US16506723

申请日：2019-07-09

申请人： QUALCOMM Incorporated

发明人： Sungwon Lee ,  Joel Sole Rojals ,  Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Done Bugdayci Sansli ,  Marta Karczewicz

IPC分类号： H04N19/186 ,  H04N1/60 ,  G06T5/00 ,  H04N19/124 ,  H04N19/85 ,  H04N19/132

摘要： In general, techniques are described for processing high dynamic range (HDR) and wide color gamut (WCG) video data for video coding. A device comprising a memory and a processor may perform the techniques. The memory may store compacted fractional chromaticity coordinate (FCC) formatted video data. The processor may inverse compact the compacted FCC formatted video data using one or more inverse adaptive transfer functions (TFs) to obtain decompacted FCC formatted video data. The processor may next inverse adjust a chromaticity component of the decompacted FCC formatted video data based on a corresponding luminance component of the decompacted FCC formatted video data to obtain inverse adjusted FCC formatted video data. The processor may convert the chromaticity component of the inverse adjusted FCC formatted video data from the FCC format to a color representation format to obtain High Dynamic Range (HDR) and Wide Color Gamut (WCG) video data.

公开(公告)号：US20190327477A1

公开(公告)日：2019-10-24

申请号：US16385469

申请日：2019-04-16

申请人： QUALCOMM Incorporated

发明人： Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Marta Karczewicz

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

摘要： 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：US10284842B2

公开(公告)日：2019-05-07

申请号：US14194159

申请日：2014-02-28

申请人： QUALCOMM Incorporated

发明人： Adarsh Krishnan Ramasubramonian ,  Ying Chen ,  Xiang Li ,  Ye-Kui Wang

IPC分类号： H04N19/105 ,  H04N19/597 ,  H04N19/30 ,  H04N19/513 ,  H04N19/187 ,  H04N19/39 ,  H04N19/167 ,  H04N19/577

摘要： A method of coding video data includes upsampling at least a portion of a reference layer picture to an upsampled picture having an upsampled picture size. The upsampled picture size has a horizontal upsampled picture size and a vertical upsampled picture size. At least one of the horizontal or vertical upsampled picture sizes may be different than a horizontal picture size or vertical picture size, respectively, of an enhancement layer picture. In addition, position information associated with the upsampled picture may be signaled. An inter-layer reference picture may be generated based on the upsampled picture and the position information.