公开(公告)号：US10038899B2

公开(公告)日：2018-07-31

申请号：US14043383

申请日：2013-10-01

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N7/36 ,  H04N19/503 ,  H04N19/70 ,  H04N19/31

CPC classification number: H04N19/31 ,  H04N19/70

Abstract: A device generates a file that stores coded samples that contain coded pictures of the video data. The file also includes a sample entry that includes an element that indicates whether all sequence parameter sets (SPSs) that are activated when a stream to which the sample entry applies is decoded have syntax elements that indicate that temporal sub-layer up-switching to any higher temporal sub-layer can be performed at any sample associated with the SPSs. The same or different device determines, based on the element in the sample entry, that all SPSs that are activated when the stream to which the sample entry applies is decoded have syntax elements that indicate that temporal sub-layer up-switching to any higher temporal sub-layer can be performed at any sample associated with the SPSs.

公开(公告)号：US10021394B2

公开(公告)日：2018-07-10

申请号：US13918041

申请日：2013-06-14

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/187 ,  H04N19/196 ,  H04N19/136 ,  H04N19/70 ,  H04N19/149 ,  H04N19/152 ,  H04N19/44 ,  H04N19/31

CPC classification number: H04N19/136 ,  H04N19/149 ,  H04N19/152 ,  H04N19/31 ,  H04N19/44 ,  H04N19/70

Abstract: A computing device selects, from among a set of hypothetical reference decoder (HRD) parameters in a video parameter set and a set of HRD parameters in a sequence parameter set, a set of HRD parameters applicable to a particular operation point of a bitstream. The computing device performs, based at least in part on the set of HRD parameters applicable to the particular operation point, an HRD operation on a bitstream subset associated with the particular operation point.

公开(公告)号：US20180192050A1

公开(公告)日：2018-07-05

申请号：US15861165

申请日：2018-01-03

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Wei-Jung Chien ,  Marta Karczewicz ,  Ye-Kui Wang

IPC: H04N19/117 ,  H04N19/80

Abstract: A video coder may reconstruct a current picture of video data. A current region of the current picture is associated with a temporal index indicating a temporal layer to which the current region belongs. Furthermore, for each respective array of a plurality of arrays that correspond to different temporal layers, the video coder may store, in the respective array, sets of adaptive loop filtering (ALF) parameters used in applying ALF filters to samples of regions of pictures of the video data that are decoded prior to the current region and that are in the temporal layer corresponding to the respective array or a lower temporal layer than the temporal layer corresponding to the respective array. The video coder determines, based on a selected set of ALF parameters in the array corresponding to the temporal layer to which the current region belongs, an applicable set of ALF parameters.

公开(公告)号：US09973782B2

公开(公告)日：2018-05-15

申请号：US15200359

申请日：2016-07-01

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N7/26 ,  H04N19/70 ,  H04N19/30 ,  H04N19/196 ,  H04N19/31 ,  H04N19/187 ,  H04N19/597

CPC classification number: H04N19/70 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/31 ,  H04N19/597

Abstract: Techniques described herein are related to coding layer identifiers for operation points in video coding. In one example, a method of decoding video data is provided. The method comprises decoding syntax elements in a video parameter set (VPS) within a conforming bitstream indicating a first operation point having a first set of content. The method further comprises decoding, if present, syntax elements in the VPS within the conforming bitstream indicating hypothetical reference decoder (HRD) parameter information having a second set of content for the first operation point, wherein the conforming bitstream does not include syntax elements in the VPS that duplicate at least one of the first or second set of content for a second operation point, and wherein decoding syntax elements comprises decoding the syntax elements indicating the first operation point and the HRD parameter information only within conforming bitstreams.

公开(公告)号：US09942546B2

公开(公告)日：2018-04-10

申请号：US14567710

申请日：2014-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/114 ,  H04N19/136 ,  H04N19/172 ,  H04N19/169 ,  H04N19/44 ,  H04N19/90 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/103 ,  H04N19/65

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/114 ,  H04N19/136 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/597 ,  H04N19/65 ,  H04N19/70 ,  H04N19/90

Abstract: In an example, a method of decoding video data includes decoding data that indicates a picture order count (POC) reset for a POC value of a first picture of a first received layer of multi-layer video data, where the first picture is included in an access unit. The method also includes, based on the data that indicates the POC reset for the POC value of the first picture and prior to decoding the first picture, outputting all pictures stored in a decoded picture buffer (DPB) that precede the first picture in coding order and that are not included in the access unit.

公开(公告)号：US09930342B2

公开(公告)日：2018-03-27

申请号：US14743556

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

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

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：US09912943B2

公开(公告)日：2018-03-06

申请号：US14329675

申请日：2014-07-11

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Krishnakanth Rapaka

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/597 ,  H04N19/70 ,  H04N19/46 ,  H04N19/30 ,  H04N19/184 ,  H04N19/187 ,  H04N19/52 ,  H04N19/44

CPC classification number: H04N19/52 ,  H04N19/184 ,  H04N19/187 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

Abstract: An apparatus for coding video information according to certain aspects includes a memory and computing hardware. The memory is configured to store video information. The computing hardware is configured to process at least one of a first signal indicating whether at least one sublayer of one or more layer sets has bit rate information to signal or a second signal indicating whether at least one sublayer of the one or more layer sets has picture rate information to signal.

公开(公告)号：US09894370B2

公开(公告)日：2018-02-13

申请号：US14665953

申请日：2015-03-23

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/37 ,  H04N19/88 ,  H04N19/60 ,  H04N19/70 ,  H04N19/89 ,  H04N19/30

CPC classification number: H04N19/37 ,  H04N19/30 ,  H04N19/60 ,  H04N19/70 ,  H04N19/88 ,  H04N19/89

Abstract: In an example, a method of coding video data includes coding one or more non-video coding layer (VCL) network abstraction layer (NAL) units of a layer of a multi-layer bitstream of video data, where the one or more non-VCL NAL units contain an SEI message having an SEI payload type. The method also includes determining one or more syntax values of the multi-layer bitstream to which the SEI message applies based on the SEI payload type.

公开(公告)号：US09866851B2

公开(公告)日：2018-01-09

申请号：US14741253

申请日：2015-06-16

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N13/00 ,  H04N19/46 ,  H04N19/30 ,  H04N19/107 ,  H04N19/157 ,  H04N19/70 ,  H04W84/04 ,  H04W88/02

CPC classification number: H04N19/187 ,  H04N13/161 ,  H04N19/107 ,  H04N19/157 ,  H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/46 ,  H04N19/70 ,  H04W84/042 ,  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 also configured to reset a picture order count (POC) of a layer included in the current AU via (1) resetting only a most significant bit (MSB) of the POC or (2) resetting both the MSB of the POC and a least significant (LSB) of the POC. The processor is further configured to, for pictures in one or more AUs subsequent to the current AU in decoding order: set a value of a first flag indicative whether a reset of the POC is a full reset.

公开(公告)号：US09854270B2

公开(公告)日：2017-12-26

申请号：US14575788

申请日：2014-12-18

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/463

CPC classification number: H04N19/597 ,  H04N19/463 ,  H04N19/52 ,  H04N19/70

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 current picture. The processor is configured to process a first offset associated with the current picture, the first offset indicating a difference between (a) most significant bits (MSBs) of a first picture order count (POC) of a previous picture in the first video layer that precedes the current picture in decoding order and (b) MSBs of a second POC of the current picture.