公开(公告)号：US10812820B2

公开(公告)日：2020-10-20

申请号：US15826549

申请日：2017-11-29

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Joel Sole Rojals

IPC: H04N19/50 ,  H04N1/64 ,  H04N19/17 ,  H04N19/70 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/12 ,  H04N19/136 ,  H04N19/46 ,  H04N21/431 ,  H04N5/445 ,  H04N19/39 ,  H04N19/52

Abstract: Provided are methods, apparatus, and computer-readable medium for processing video data by a video coding system that implements ST 2094-10. Video data can include at least two video signals, which can be displayed at the same time in different display regions of a video frame. In various implementations, various techniques can be used to determine an association between a set of color volume parameters and a video signal, and this association can be encoded into a bitstream. Upon decoding of the bitstream, the set of color volume parameters associated with a particular video signal can be used to compress the color volume of the video signal into a range that can be displayed by a particular display device.

公开(公告)号：US10750198B2

公开(公告)日：2020-08-18

申请号：US14719228

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Vadim Seregin ,  Wei Pu ,  Marta Karczewicz ,  Joel Sole Rojals ,  Krishnakanth Rapaka

IPC: H04N19/186 ,  H04N19/70 ,  H04N19/182 ,  H04N19/50 ,  H04N19/159 ,  H04N19/115 ,  H04N19/463 ,  H04N19/91

Abstract: In an example, a method of processing video data includes coding at least one of data that indicates a maximum palette size of a palette of color values for coding a block of video data or data that indicates a maximum palette predictor size of a palette predictor for determining the palette of color values. The method also includes coding the block of video data in accordance with the data.

公开(公告)号：US10595032B2

公开(公告)日：2020-03-17

申请号：US16103622

申请日：2018-08-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/117 ,  H04N19/124 ,  H04N19/154 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/36 ,  H04N19/44 ,  H04N19/463 ,  H04N19/60 ,  H04N19/66 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85 ,  H04N19/46

Abstract: This disclosure relates to processing video data, including processing video data that is represented by an HDR/WCG color representation. In accordance with one or more aspects of the present disclosure, one or more syntax structures may be used to signal syntax elements and or other information that allow a video decoder or video postprocessing device to reverse the dynamic range adjustment (DRA) techniques of this disclosure to reconstruct the original or native color representation of the video data. Dynamic range adjustment (DRA) parameters may be applied to video data in accordance with one or more aspects of this disclosure in order to make better use of an HDR/WCG color representation, and may include the use of global offset values, as well as local scale and offset values for partitions of color component values.

公开(公告)号：US10412419B2

公开(公告)日：2019-09-10

申请号：US14328545

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/80 ,  H04N19/70 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/82 ,  H04N19/86

Abstract: Performing deblock filtering on video data may include determining, for a first non-luma color component of the video data, whether to perform deblock filtering based on a first deblock filtering process or a second deblock filtering process. Next, deblock filtering may be performed on the first non-luma color component in accordance with the determined deblock filtering process.

公开(公告)号：US10412387B2

公开(公告)日：2019-09-10

申请号：US14831644

申请日：2015-08-20

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Ye-Kui Wang ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/159 ,  H04N19/70 ,  H04N19/593 ,  H04N19/523

Abstract: A video coder may include a current picture and a reference picture in a reference picture list. The video coder may determine a co-located block of the reference picture. The co-located block is co-located with a current block of the current picture. Furthermore, the video coder derives a temporal motion vector predictor from the co-located block and may determine the temporal motion vector predictor has sub-pixel precision. The video coder may right-shift the temporal motion vector predictor determined to have sub-pixel precision. In addition, the video coder may determine, based on the right-shifted temporal motion vector predictor, a predictive block within the current picture.

公开(公告)号：US10362336B2

公开(公告)日：2019-07-23

申请号：US14667411

申请日：2015-03-24

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Wei Pu ,  Vadim Seregin ,  Rajan Laxman Joshi ,  Joel Sole Rojals ,  Feng Zou

IPC: H04N19/52 ,  H04N19/93 ,  H04N19/593 ,  H04N19/27 ,  H04N19/176

Abstract: Techniques for encoding a binary prediction vector for predicting a palette for palette-based video coding is described. In one example, a method of decoding video comprises receiving an encoded binary prediction vector for a current block of video data, decoding the encoded binary prediction vector using a run-length decoding technique, generating a palette for the current block of video data based on the binary prediction vector, the binary prediction vector comprising entries indicating whether or not previously-used palette entries are reused for the palette for the current block of video data, and decoding the current block of video data using the palette.

公开(公告)号：US10313684B2

公开(公告)日：2019-06-04

申请号：US14743883

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Feng Zou ,  Marta Karczewicz ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Wei Pu ,  Vadim Seregin

IPC: H04N19/48 ,  H04N19/70 ,  H04N19/93 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/587 ,  H04N19/593

Abstract: An example method of decoding video data includes determining a palette for decoding a block, the palette including entries each having a respective palette index, determining a reference run of palette indices for first pixels of the block, and determining a current run of palette indices for second pixels of the block, based on the reference run. Determining the second plurality of palette indices includes locating a reference index of the reference run, the reference index being spaced at least one line from an initial index of the current run, determining a run length of the reference run, a final index of the reference run being separated from the initial index of the current run by at least one index, copying the palette indices of the reference run as the current run of palette indices, and decoding pixels of the copied current run using the palette.

公开(公告)号：US10291940B2

公开(公告)日：2019-05-14

申请号：US14719265

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Rajan Laxman Joshi ,  Marta Karczewicz ,  Wei Pu ,  Joel Sole Rojals

IPC: H04N19/93 ,  H04N19/186 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/157 ,  H04N19/597

Abstract: In an example a method of processing video data includes determining palette indices of a first row of a block of video data, wherein the palette indices correspond to a palette of one or more colors for coding the block of video data, and wherein the palette indices of the first row include one or more indices that are associated with a color value in the palette and a syntax element that is not associated with a color value in the palette. The method also includes coding a run of palette indices of a second row of the block of video data relative to the palette indices of the first row, wherein the run includes the one or more indices that are associated with a color value in the palette and the syntax element that is not associated with a color value in the palette.

公开(公告)号：US10244249B2

公开(公告)日：2019-03-26

申请号：US15269558

申请日：2016-09-19

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/184 ,  H04N19/132 ,  H04N19/46 ,  H04N19/80 ,  H04N19/85 ,  H04N19/36 ,  H04N19/117 ,  H04N19/154 ,  H04N19/187

Abstract: Processing high dynamic range and or wide color gamut video data using a fixed-point implementation. A method of processing video data may include receiving one or more supplemental enhancement information (SEI) messages that contain information specifying how to determine parameters for performing an inverse dynamic range adjustment process, receiving decoded video data, and performing the inverse dynamic range adjustment process on the decoded video data using fixed-point computing in accordance with the information in the one or more SEI messages.

公开(公告)号：US20190045209A1

公开(公告)日：2019-02-07

申请号：US16103622

申请日：2018-08-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/463 ,  H04N19/46 ,  H04N19/85 ,  H04N19/66 ,  H04N19/184 ,  H04N19/70 ,  H04N19/36 ,  H04N19/80 ,  H04N19/124 ,  H04N19/154 ,  H04N19/174 ,  H04N19/186 ,  H04N19/117 ,  H04N19/60 ,  H04N19/44

CPC classification number: H04N19/463 ,  H04N19/117 ,  H04N19/124 ,  H04N19/154 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/36 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/66 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85

Abstract: This disclosure relates to processing video data, including processing video data that is represented by an HDR/WCG color representation. In accordance with one or more aspects of the present disclosure, one or more syntax structures may be used to signal syntax elements and or other information that allow a video decoder or video postprocessing device to reverse the dynamic range adjustment (DRA) techniques of this disclosure to reconstruct the original or native color representation of the video data. Dynamic range adjustment (DRA) parameters may be applied to video data in accordance with one or more aspects of this disclosure in order to make better use of an HDR/WCG color representation, and may include the use of global offset values, as well as local scale and offset values for partitions of color component values.