公开(公告)号：US09930340B2

公开(公告)日：2018-03-27

申请号：US14742435

申请日：2015-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/12 ,  H04N19/136 ,  H04N19/31 ,  H04N19/44 ,  H04N19/184 ,  H04N19/187 ,  H04N19/59 ,  H04N19/119 ,  H04N19/169 ,  H04N19/196 ,  H04N19/70 ,  H04N19/30

CPC classification number: H04N19/136 ,  H04N19/119 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/196 ,  H04N19/30 ,  H04N19/31 ,  H04N19/44 ,  H04N19/59 ,  H04N19/70

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 a parameter set defining parameters of the encoded video bitstream. The method further includes determining one or more parameters of the parameter set that include information describing a first sub-bitstream of the encoded video bitstream that includes one or more layers with video data and information describing a second sub-bitstream of the encoded video bitstream that includes one or more layers with no video data. The method further includes performing a bitstream conformance check on the first sub-bitstream or the second sub-bitstream based on whether at least one layer of the first sub-bitstream or the second sub-bitstream includes video data.

公开(公告)号：US09866869B2

公开(公告)日：2018-01-09

申请号：US14659213

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/46 ,  H04N19/597 ,  H04N19/105 ,  H04N19/68

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/30 ,  H04N19/46 ,  H04N19/597 ,  H04N19/68

Abstract: In an example, a method of coding video data includes coding, by a video coder, at least a portion of a picture of an independently decodable non-base layer of a multi-layer bitstream. The method also includes coding, by the video coder, data indicating a picture order count (POC) value reset for a POC least significant bits (LSB) value of the picture only when the picture has a POC LSB value for the picture is equal to zero.

公开(公告)号：US09866852B2

公开(公告)日：2018-01-09

申请号：US14743327

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/169 ,  H04N19/105 ,  H04N19/159 ,  H04N19/187 ,  H04N19/30 ,  H04N19/70 ,  H04N19/172

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/70

Abstract: Techniques and systems are provided for decoding and processing video data. For example, a method of decoding video data includes accessing an encoded video bitstream comprising multiple layers. The encoded video bitstream includes multiple access units, with a first access unit including an end of sequence network abstraction layer unit. A second access unit includes an intra random access point picture and is a next subsequent access unit in decoding order following the first access unit. The method further includes reinitializing decoding at the second access unit based on the second access unit being the next subsequent access unit in decoding order following the end of sequence network abstraction layer unit of the first access unit.

公开(公告)号：US20170344843A1

公开(公告)日：2017-11-30

申请号：US15591805

申请日：2017-05-10

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: G06K9/32 ,  H04N19/167 ,  H04N19/70 ,  G06K9/00

CPC classification number: G06K9/3233 ,  G06K9/00744 ,  H04N19/167 ,  H04N19/70 ,  H04N21/234327 ,  H04N21/234345 ,  H04N21/2353 ,  H04N21/440227 ,  H04N21/440245 ,  H04N21/4728 ,  H04N21/8456 ,  H04N21/85406

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：US09781413B2

公开(公告)日：2017-10-03

申请号：US14042416

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N7/26 ,  H04N19/46 ,  H04N19/70 ,  H04N19/30

CPC classification number: H04N19/46 ,  H04N19/30 ,  H04N19/70

Abstract: A device for processing video data receives an indication of a maximum layer identification (ID) value for a bitstream; receives a flag for a first layer with a layer ID value less than the maximum layer ID value; and, based on a value of the flag, determines if the first layer is included in an operation point.

公开(公告)号：US09762903B2

公开(公告)日：2017-09-12

申请号：US13906264

申请日：2013-05-30

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/50 ,  H04N19/70 ,  H04N19/30 ,  H04N19/597

CPC classification number: H04N19/30 ,  H04N19/597 ,  H04N19/70

Abstract: A video encoder generates a syntax element that indicates whether a video unit of a current picture is predicted from an external picture. The external picture is in a different layer than the current picture. Furthermore, the video encoder outputs a video data bitstream that includes a representation of the syntax element. The video data bitstream may or may not include a coded representation of the external picture. A video decoder obtains the syntax element from the video data bitstream. The video decoder uses the syntax element in a process to reconstruct video data of a portion of the video unit.

公开(公告)号：US20170237965A1

公开(公告)日：2017-08-17

申请号：US15432660

申请日：2017-02-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N13/00

CPC classification number: H04N13/178 ,  G06F17/00 ,  H04N13/189 ,  H04N21/85406

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：US09729887B2

公开(公告)日：2017-08-08

申请号：US14749534

申请日：2015-06-24

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N19/174 ,  H04N19/70 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44 ,  H04N19/129 ,  H04N19/30 ,  H04N19/513 ,  H04N19/196 ,  H04N19/40

CPC classification number: H04N19/174 ,  H04N19/129 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/40 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/70

Abstract: A device for encoding video data includes a memory configured to store at least a portion of a multi-layer bitstream of video data and one or more processors configured to determine that a supplemental enhancement information (SEI) message applies to more than one layer of the multi-layer video data; determine that the SEI message references a syntax element that has multiple instances associated with the more than one layer of the multi-layer video data; and set all of the multiple instances to a same value.

公开(公告)号：US09723331B2

公开(公告)日：2017-08-01

申请号：US15353367

申请日：2016-11-16

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Ye-Kui Wang ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/86 ,  H04N19/117 ,  H04N19/61 ,  H04N19/124 ,  H04N19/13 ,  H04N19/105 ,  H04N19/159 ,  H04N19/43 ,  H04N19/176 ,  H04N19/174 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/43 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.

公开(公告)号：US20170171549A1

公开(公告)日：2017-06-15

申请号：US15425676

申请日：2017-02-06

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Ye-Kui Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/187 ,  H04N19/44 ,  H04N19/30 ,  H04N19/70 ,  H04N19/172 ,  H04N19/169

CPC classification number: H04N19/187 ,  H04N19/13 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/70

Abstract: In one example, the disclosure is directed to techniques that include receiving a bitstream comprising at least a syntax element, a first network abstraction layer unit type, and a coded access unit comprising a plurality of pictures. The techniques further include determining a value of the syntax element which indicates whether the access unit was coded using cross-layer alignment. The techniques further include determining the first network abstraction layer unit type for a picture in the access unit and determining whether the first network abstraction layer unit type equals a value in a range of type values. The techniques further include setting a network abstraction layer unit type for all other pictures in the coded access unit to equal the value of the first network abstraction layer unit type if the first network abstraction layer unit type is equal to a value in the range of type values.