公开(公告)号：US20200336726A1

公开(公告)日：2020-10-22

申请号：US16917476

申请日：2020-06-30

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N13/161 ,  H04N19/70 ,  H04N5/76 ,  H04N9/804 ,  H04N19/597 ,  H04N19/46 ,  H04N9/82 ,  H04N5/919 ,  H04N19/44

Abstract: Techniques for encapsulating video streams containing multiple coded views in a media file are described herein. In one example, a method includes parsing a track of multiview video data, wherein the track includes at least one depth view. The method further includes parsing information to determine a spatial resolution associated with the depth view, wherein decoding the spatial resolution does not require parsing of a sequence parameter set of the depth view. Another example method includes composing a track of multiview video data, wherein the track includes the one or more views. The example method further includes composing information to indicate a spatial resolution associated with the depth view, wherein decoding the spatial resolution does not require parsing of a sequence parameter set of the depth view.

公开(公告)号：US10595031B2

公开(公告)日：2020-03-17

申请号：US14328406

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/46 ,  H04N19/30 ,  H04N19/44 ,  H04N19/597

Abstract: A method, apparatus, and manufacture for processing video data. A list of output layer sets in a video bitstream is received, and an index to at least one target output layer set in the list of output layer sets is received. Next, target output layers in the at least one target output layer set is determined based on the index. At least the target output layers from the video bitstream are decoded. Then, the decoded target output layers are output without outputting layers that are not targeted for output.

公开(公告)号：US10565463B2

公开(公告)日：2020-02-18

申请号：US15591805

申请日：2017-05-10

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: G06K9/32 ,  H04N21/854 ,  H04N21/235 ,  H04N21/4728 ,  H04N19/167 ,  H04N19/70 ,  G06K9/00 ,  H04N21/2343 ,  H04N21/845 ,  H04N21/4402

Abstract: A device for determining information for video data includes one or more processors implemented in circuitry that are configured to determine one or more most-interested regions of a plurality of regions of an image of video data from data representative of the one or more most-interested regions. The one or more processors are further configured to generate a request specifying the one or more most-interested regions using the data representative of the one or more most-interested regions and output the request to a server device.

公开(公告)号：US10560710B2

公开(公告)日：2020-02-11

申请号：US14584993

申请日：2014-12-29

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/46 ,  H04N19/52

Abstract: Methods for coding recovery point supplemental enhancement information (SEI) messages and region refresh SEI messages in multi-layer coding are disclosed. In one aspect, the method may include determining at least one picture among a plurality of pictures included within an access unit with which to associate at least one recovery point SEI message, the access unit being included within the multi-layer bitstream. The method may further include associating the at least one recovery point SEI message with the determined at least one picture. The method may also include coding the video information based at least in part on the association of the at least one recovery point SEI message with the determined at least one picture.

公开(公告)号：US10454985B2

公开(公告)日：2019-10-22

申请号：US15058963

申请日：2016-03-02

Applicant: QUALCOMM Incorporated

Inventor： Thomas Stockhammer ,  Gordon Kent Walker ,  Ye-Kui Wang

IPC: H04L29/06 ,  H04L29/08 ,  H04N21/2343 ,  H04N21/262 ,  H04N21/61 ,  H04N21/845

Abstract: In one example, a device includes one or more media decoders configured to decode media data, a network interface configured to receive a layered coding transport (LCT) Session Instance Description (LSID), the LSID including information representing a plurality of LCT sessions, each of the LCT sessions including data of a respective one of a plurality of representations of a DASH media presentation and data of one or more of the LCT sessions, and a processor configured to initiate consumption of one or more of the representations of the DASH media presentation using the LSID and without using a manifest file for the DASH media presentation, wherein to initiate consumption, the processor is configured to receive, via the network interface, packets of the LCT sessions including portions of data of the one or more of the representations; and provide data of the packets to the one or more media decoders.

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：US10404990B2

公开(公告)日：2019-09-03

申请号：US15884275

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/187 ,  H04N19/50 ,  H04N19/30 ,  H04N19/597 ,  H04N19/176 ,  H04N19/172 ,  H04N19/124 ,  H04N19/105 ,  H04N19/31 ,  H04N19/51 ,  H04N19/70 ,  H04N19/52

Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor configured to: determine a value of a first flag indicative of whether preceding pictures that precede a current picture in a current layer in decoding order are used for temporal motion vector prediction (TMVP) of subsequent pictures that follow the current picture in the current layer in decoding order, the first flag associated with the current picture; and refrain from using the preceding pictures in the current layer as reference pictures for TMVP of the current picture, in response to determining that the value of the first flag indicates that the preceding pictures in the current layer should not be used for TMVP of the subsequent pictures in the current layer.

公开(公告)号：US10389999B2

公开(公告)日：2019-08-20

申请号：US15432660

申请日：2017-02-14

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Marta Karczewicz

IPC: G06T19/00 ,  H04N13/178 ,  H04N13/189 ,  H04N21/854 ,  G06F17/00

Abstract: In various implementations, modifications and/or additions to the ISOBMFF can indicate that a file that has been formatted according to the ISOBMFF, or a format derived from the ISOBMFF, includes virtual reality content. The file can include a restricted scheme information box, written into a track box in the file. The restricted scheme information box can indicate a virtual reality scheme for the contents of the track. For example, the restricted scheme information box can include a scheme type box, where the type indicates a virtual reality scheme. As a further example, the restricted scheme information box can include a scheme information box that can provide parameters relating to the virtual reality scheme.

公开(公告)号：US10356415B2

公开(公告)日：2019-07-16

申请号：US14742489

申请日：2015-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/136 ,  H04N19/31 ,  H04N19/44 ,  H04N19/184 ,  H04N19/187 ,  H04N19/59 ,  H04N19/119 ,  H04N19/169 ,  H04N19/196 ,  H04N19/70 ,  H04N19/30

Abstract: Techniques and systems are provided for encoding video data. For example, a method of encoding video data includes generating an encoded video bitstream including multiple layers. The encoded video bitstream includes one or more sequence parameter sets and a video parameter set. The method further includes generating, according to a constraint, one or more representation format parameters for a sequence parameter set assigned to a base layer of the encoded video bitstream. The constraint limits values of the one or more representation format parameters in the sequence parameter set to be less than or equal to values of corresponding representation format parameters that are assigned to the base layer in the video parameter set.

公开(公告)号：US10349067B2

公开(公告)日：2019-07-09

申请号：US15432855

申请日：2017-02-14

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/39 ,  H04N19/70 ,  H04N19/30 ,  H04N19/184

Abstract: In various implementations, techniques are described herein to resolve issues related to the location of an EOB NAL unit in an ISO base media file. In various implementations, these techniques include relaxing the requirement that a file include only one EOB NAL unit. These techniques further include providing the EOB NAL unit from the highest layer when reconstructing the bitstream. This EOB NAL unit can be added to a last access unit in the reconstructed bitstream. When the EOB NAL unit from the highest layer is not present, an EOB NAL unit from a lower layer can be provided instead.