公开(公告)号：US20190327477A1

公开(公告)日：2019-10-24

申请号：US16385469

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Marta Karczewicz

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

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：US10284842B2

公开(公告)日：2019-05-07

申请号：US14194159

申请日：2014-02-28

Applicant: QUALCOMM Incorporated

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

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

Abstract: 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.

公开(公告)号：US20190014298A1

公开(公告)日：2019-01-10

申请号：US16027185

申请日：2018-07-03

Applicant: QUALCOMM Incorporated

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

IPC: H04N9/67 ,  H04N9/77 ,  H04N19/186 ,  H04N19/122 ,  H04N19/132

CPC classification number: H04N9/67 ,  H04N9/77 ,  H04N19/122 ,  H04N19/132 ,  H04N19/182 ,  H04N19/186 ,  H04N19/70

Abstract: A video decoder is configured to reconstruct a first version of a current picture; determine a transformed sample of the first component, a transformed sample of the second component, and a transformed sample of the third component by applying a first matrix to a triplet comprising the samples of the first, second, and third components; include the transformed samples of the first, second, and third components in a second version of the current picture; determine, based on the transformed samples of the first, second, and third components and a first row of a second matrix, a set of transformed samples for the third component, the set of transformed samples for the third component including samples of the third component that are immediately neighboring the transformed sample of the third component; and include the set of transformed samples for the third component in the second version of the current picture.

公开(公告)号：US10158867B2

公开(公告)日：2018-12-18

申请号：US14741304

申请日：2015-06-16

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N13/161 ,  H04N19/46 ,  H04N19/30 ,  H04N19/107 ,  H04N19/157 ,  H04N19/70 ,  H04W84/04 ,  H04W88/02

Abstract: An apparatus for coding video information according to certain aspects includes a memory unit configured to store video information associated with a plurality of layers and a processor. The processor is configured to obtain information associated with a current access unit (AU) to be coded, the current AU containing pictures from one or more layers of the plurality of layers. The processor is further configured to determine whether the current AU includes a first layer containing an intra random access point (IRAP) picture. The process is additionally configured to reset a picture order count (POC) of the second layer at the current AU, in response to determining that the current AU includes (1) a first layer that contains an IRAP picture and (2) a second layer containing no picture or containing a discardable picture.

公开(公告)号：US10021414B2

公开(公告)日：2018-07-10

申请号：US14146149

申请日：2014-01-02

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Ying Chen ,  Li Zhang ,  Adarsh Krishnan Ramasubramonian

IPC: H04N19/55 ,  H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/31

CPC classification number: H04N19/55 ,  H04N19/31 ,  H04N19/52 ,  H04N19/597 ,  H04N19/70

Abstract: Techniques are described for motion vector restriction where information in a bitstream ensures that a derived motion vector from a motion vector predictor is compliant with a motion vector restriction. Techniques are also described for indicating the motion vector restriction for parallel decoding.

公开(公告)号：US20180176575A1

公开(公告)日：2018-06-21

申请号：US15897008

申请日：2018-02-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/146 ,  H04N19/463 ,  H04N19/597 ,  H04N19/513 ,  H04N19/46 ,  H04N19/184 ,  H04N19/70 ,  H04N19/44 ,  H04N19/30

CPC classification number: H04N19/146 ,  H04N19/184 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/513 ,  H04N19/597 ,  H04N19/70

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data includes generating an encoded video bitstream comprising multiple layers. The encoded video bitstream includes a video parameter set defining parameters of the encoded video bitstream. The video parameter set includes video usability information. The method further includes determining whether timing information is signaled in the video usability information of the video parameter set. The method further includes determining whether to signal hypothetical reference decoder parameters in the video usability information of the video parameter set based on whether timing information is signaled in the video usability information.

公开(公告)号：US09979975B2

公开(公告)日：2018-05-22

申请号：US15465271

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian ,  Jianle Chen

IPC: H04B1/66 ,  H04N19/36 ,  H04N19/70 ,  H04N19/105 ,  H04N19/184 ,  H04N19/172 ,  H04N19/96 ,  H04N19/176

CPC classification number: H04N19/36 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/436 ,  H04N19/597 ,  H04N19/70 ,  H04N19/96

Abstract: Bitstream restrictions or constraints on the partitioning of pictures across layers of video data are described. In some examples, the number of tiles per picture for each layer of a plurality of layers is constrained based on a maximum number of tiles per picture for the layer. In some examples, the number of tiles per picture for each layer of the plurality of layers is no greater than the maximum number of tiles per picture for the layer. In some examples, a sum of the numbers of tiles per picture for the plurality of layers is no greater than a sum of the maximum numbers of tiles per picture for the plurality of layers. In some examples, a second largest coding unit (LCU) or coding tree block (CTB) size for a second layer is constrained based on, e.g., to be equal to, a first LCU size for a first layer.

公开(公告)号：US09979971B2

公开(公告)日：2018-05-22

申请号：US14512962

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Ying Chen ,  Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/80 ,  H04N19/68 ,  H04N19/86

CPC classification number: H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/68 ,  H04N19/70 ,  H04N19/80 ,  H04N19/86

Abstract: An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a first video layer having a first picture. The processor is configured to process picture order count (POC) derivation information associated with the first picture, and determine, based on the POC derivation information associated with the first picture, a POC value of at least one other picture in the first video layer that precedes the first picture in decoding order. The processor may encode or decode the video information.

公开(公告)号：US20180063500A1

公开(公告)日：2018-03-01

申请号：US15684732

申请日：2017-08-23

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian

IPC: H04N9/67 ,  G09G3/20 ,  H04N19/44 ,  H04N19/176 ,  H04N19/124 ,  H04N19/117

Abstract: 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：US20170332098A1

公开(公告)日：2017-11-16

申请号：US15595793

申请日：2017-05-15

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/55 ,  H04N19/48 ,  H04N19/44 ,  H04N19/30 ,  H04N19/176 ,  H04N19/70 ,  H04N19/124

CPC classification number: H04N19/176 ,  H04N19/126 ,  H04N19/136 ,  H04N19/18 ,  H04N19/98

Abstract: A device for decoding video data receives the video data, determines a scaling parameter for a block of the video data; and scales the block in a video decoding loop using the scaling parameter to increase a dynamic range for luminance values of the block. A device for encoding video data partitions the video data into blocks; determines a scaling parameter for a block of the video data; and scales the block in a video encoding loop using the scaling parameter to decrease a dynamic range for luminance values of the block.