公开(公告)号：US11700384B2

公开(公告)日：2023-07-11

申请号：US17657563

申请日：2022-03-31

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Marta Karczewicz ,  Ye-Kui Wang

IPC: H04N19/157 ,  H04N19/46 ,  H04N19/172 ,  H04N19/122 ,  H04N19/96 ,  H04N19/177

CPC classification number: H04N19/157 ,  H04N19/122 ,  H04N19/172 ,  H04N19/46 ,  H04N19/177 ,  H04N19/96

Abstract: A video encoder is configured to determine a picture size for one or more pictures included in a video sequence. The picture size associated with the video sequence may be a multiple of an aligned coding unit size for the video sequence. In one example, the aligned coding unit size for the video sequence may comprise a minimum coding unit size where the minimum coding unit size is selected from a plurality of smallest coding unit sizes corresponding to different pictures in the video sequence. A video decoder is configured to obtain syntax elements to determine the picture size and the aligned coding unit size for the video sequence. The video decoder decodes the pictures included in the video sequence with the picture size, and stores the decoded pictures in a decoded picture buffer.

公开(公告)号：US11159805B2

公开(公告)日：2021-10-26

申请号：US16723825

申请日：2019-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/167 ,  H04N19/172 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85

Abstract: Systems, methods, and computer readable media are described for generating a regional nesting message. In some examples, a video bitstream is obtained and an encoded video bitstream is generated using the video data. The encoded video bitstream includes a regional nesting message that contains a plurality of nested messages and a plurality of region data defining a plurality of regions of a picture of the encoded video bitstream. For example, a first nested message of the regional nesting message includes a first set of data and a first region identifier indicating that the first set of data is to be applied to a first region of the plurality of regions of the picture.

公开(公告)号：US10652631B2

公开(公告)日：2020-05-12

申请号：US15602988

申请日：2017-05-23

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N21/845 ,  H04N21/854 ,  H04N19/30 ,  H04N21/2343 ,  H04N19/70 ,  H04N19/85 ,  H04L29/06 ,  H04N21/432

Abstract: In one example, a device for retrieving video data includes one or more processors configured to receive data describing a sample entry type for a sample of a video bitstream, the sample entry type being one of ‘hev1’ or ‘hev2,’ wherein the sample comprises video data encoded according to one of High-Efficiency Video Coding (HEVC) or layered HEVC (L-HEVC), and wherein one or more other samples including video data precede the sample in the video bitstream in decoding order, and in response to the sample entry type being ‘hev1’ or ‘hev2’ and the sample comprising the video data encoded according to one of HEVC or L-HEVC, retrieve the sample to perform random access using the sample, without retrieving the video data of any of the one or more other samples that precede the sample, and without retrieving parameter sets of any previous samples of the video bitstream in decoding order.

公开(公告)号：US10652630B2

公开(公告)日：2020-05-12

申请号：US15602962

申请日：2017-05-23

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N21/845 ,  H04N21/2343 ,  H04N21/854 ,  H04N19/30 ,  H04N21/8543 ,  H04N19/85 ,  H04L29/06 ,  H04N21/432 ,  H04N19/70

Abstract: In one example, a device for retrieving video data includes one or more processors configured to, in response to determining that a lowest track of a plurality of tracks, the lowest track including a base layer of the video data carrying a lowest sub-layer of the video data, is to include sample entry type values for samples indicating that convenient random access is enabled, set sample entry type values for samples of each of the other tracks of the plurality of tracks that include video data to indicate that convenient random access is enabled, and generate a file including the plurality of tracks, such that the sample entry type values for the tracks of the plurality of tracks indicate that convenient random access is enabled.

公开(公告)号：US10587934B2

公开(公告)日：2020-03-10

申请号：US15602887

申请日：2017-05-23

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N21/81 ,  G06T9/00 ,  H04L29/06 ,  H04L29/08 ,  H04N21/438 ,  H04N21/44 ,  H04N21/218 ,  H04N21/2343 ,  H04N21/262 ,  H04N21/845 ,  H04N19/597 ,  H04N19/70

Abstract: A device for processing media data is configured to receive media data including virtual reality (VR) video data; determine, based at least in part on data signaled at an adaptation set level of a media presentation description for a media presentation, a projection mapping used in the media presentation; process segments of a video representation of the media presentation based on the projection mapping used in the media presentation. A device for processing media data is configured to generate media data that includes VR video data; include in the media data, data signaled at an adaptation set level of a media presentation description that identifies a projection mapping used in media presentation included in the media data; and send segments of a video representation of the media presentation based on the projection mapping used in the media presentation.

公开(公告)号：US10567734B2

公开(公告)日：2020-02-18

申请号：US16115355

申请日：2018-08-28

Applicant: QUALCOMM Incorporated

Inventor： Thomas Stockhammer ,  Ye-Kui Wang

IPC: H04N13/00 ,  H04N13/161 ,  H04N21/235 ,  H04N5/232 ,  H04N21/236

Abstract: An example device for processing video data includes a memory configured to store an omnidirectional video stream, and a processor implemented in circuitry and configured to process (e.g., encode, transmit, receive, or decode) a first frame of a set of file format samples of the omnidirectional video stream, the set of file format samples referring to a sample entry, the first frame having a first region-wise packing scheme, and process a second frame of the set of file format samples referring to the sample entry, the second frame having a second region-wise packing scheme different than the first region-wise packing scheme. In this manner, a single omnidirectional video bitstream may include an entire virtual reality (VR) video content with most-requested regions being optimized with a largest number of color samples per unit of area.

公开(公告)号：US10542261B2

公开(公告)日：2020-01-21

申请号：US15884255

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

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

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

Abstract: Techniques and systems are provided for decoding video data. For example, a method of decoding video data includes receiving, by a decoding device, an encoded video bitstream generated according to a first coding protocol, and determining that a base layer is to be provided to the decoding device as part of an external bitstream that is different from the received encoded video bitstream. The external bitstream is provided to the decoding device by an external source and is not provided as part of the encoded video bitstream. The base layer is encoded using a second coding protocol that is different from the first coding protocol. The method further includes determining to ignore a profile, tier, and level syntax structure assigned to the base layer in the video parameter set in response to determining the base layer is to be provided to the decoding device as part of an external bitstream. The profile, tier, and level syntax structure is assigned a zero value based on the base layer being provided as part of the external bitstream. The method further includes decoding the encoded video data of the encoded video bitstream.

公开(公告)号：US10432928B2

公开(公告)日：2019-10-01

申请号：US14663155

申请日：2015-03-19

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Chao Pang ,  Ying Chen ,  Ye-Kui Wang

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/51 ,  H04N19/139 ,  H04N19/159 ,  H04N19/573 ,  H04N19/58 ,  H04N19/52 ,  H04N19/503

Abstract: An example method for encoding or decoding video data includes storing, by a video coder and in a reference picture buffer, a version of a current picture of the video data, including the current picture in a reference picture list (RPL) used to predict the current picture, and coding, by the video coder and based on the RPL, a block of video data in the current picture based on a predictor block of video data included in the version of the current picture stored in the reference picture buffer.

公开(公告)号：US20190243881A1

公开(公告)日：2019-08-08

申请号：US16250776

申请日：2019-01-17

Applicant: QUALCOMM Incorporated

Inventor： Waqar Zia ,  Charles Nung Lo ,  Thomas Stockhammer ,  Giridhar Dhati Mandyam ,  Ye-Kui Wang ,  Gordon Kent Walker

IPC: G06F17/22 ,  H04L29/08 ,  G06F16/955 ,  G06F16/958

CPC classification number: G06F17/2247 ,  G06F16/955 ,  G06F16/986 ,  G06F17/2288 ,  H04L67/02 ,  H04L67/2842 ,  H04N21/435

Abstract: In one example, a device for retrieving media data includes a memory configured to store an ISO Base Media File Format (ISO BMFF) file including one or more samples including hypertext markup language (HTML) elements defining dynamic web content, and a processing unit implemented in circuitry and configured to: retrieve the ISO BMFF file, extract the HTML elements from the samples of the file, and processing the HTML elements to present the dynamic web content. The HTML elements may include JavaScript elements. The processing unit may also present the dynamic web content in a manner that is synchronized with corresponding media data.

公开(公告)号：US10264272B2

公开(公告)日：2019-04-16

申请号：US14514153

申请日：2014-10-14

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Adarsh Krishnan Ramasubramonian ,  Ye-Kui Wang

IPC: H04N19/33 ,  H04N19/46 ,  H04N19/174 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30

Abstract: An apparatus may include a memory configured to store video data associated with a reference layer (RL) and an enhancement layer (EL) and a processor in communication with the memory. The processor may determine whether a first enhancement layer (EL) picture associated with a first parameter set is an intra random access point (IRAP) picture, determine whether a first access unit including the EL picture immediately follows a splice point, and perform one of (1) refraining from associating the first EL picture with a second parameter set different from the first parameter set, or (2) associating the first EL picture with a second parameter set different from the first parameter set. The processor may encode or decode the video data.