公开(公告)号：US09712871B2

公开(公告)日：2017-07-18

申请号：US14701004

申请日：2015-04-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/85 ,  H04N19/48 ,  H04N19/44 ,  H04N19/39 ,  H04N19/29 ,  H04N19/187 ,  H04N21/45 ,  H04N21/2343 ,  H04N19/70 ,  H04N19/66 ,  H04N19/30 ,  H04N19/127 ,  H04N19/157 ,  H04N19/436 ,  H04N21/81

CPC classification number: H04N21/4516 ,  H04N19/127 ,  H04N19/157 ,  H04N19/187 ,  H04N19/29 ,  H04N19/30 ,  H04N19/39 ,  H04N19/436 ,  H04N19/44 ,  H04N19/48 ,  H04N19/66 ,  H04N19/70 ,  H04N19/85 ,  H04N21/234327 ,  H04N21/816

Abstract: A multi-layer video decoder is configured to determine, based on a list of triplet entries, whether the multi-layer video decoder is capable of decoding a bitstream that comprises an encoded representation of the multi-layer video data. The number of triplet entries in the list is equal to a number of single-layer decoders in the multi-layer video decoder. Each respective triplet entry in the list of triplet entries indicates a profile, a tier, and a level for a respective single-layer decoder in the multi-layer video decoder. The multi-layer video decoder is configured such that, based on the multi-layer video decoder being capable of decoding the bitstream, the multi-layer video decoder decodes the bitstream.

公开(公告)号：US09654794B2

公开(公告)日：2017-05-16

申请号：US14584994

申请日：2014-12-29

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/30 ,  H04N19/573 ,  H04N19/46 ,  H04N19/52 ,  H04N19/577 ,  H04N19/597 ,  H04N19/105 ,  H04N19/70 ,  H04N19/172 ,  H04N19/44 ,  H04N19/65

CPC classification number: H04N19/573 ,  H04N19/105 ,  H04N19/172 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/52 ,  H04N19/577 ,  H04N19/597 ,  H04N19/65 ,  H04N19/70

Abstract: Methods for coding an inter-layer reference picture set (RPS) and coding end of bitstream (EoB) network access (NAL) units in multi-layer coding are disclosed. In one aspect, the method includes determining whether a candidate inter-layer reference picture is present in the video information. The video information includes an inter-layer RPS including a plurality of subsets. The method further includes determining an inter-layer RPS subset to which the candidate inter-layer reference picture belongs in response to determining that the candidate inter-layer reference picture is not present, and indicating that no reference picture is present in the inter-layer RPS subset to which the candidate inter-layer reference picture belongs.

公开(公告)号：US09648335B2

公开(公告)日：2017-05-09

申请号：US14328317

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N19/30 ,  H04N19/597 ,  H04N19/70 ,  H04N19/436

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：US09628792B2

公开(公告)日：2017-04-18

申请号：US14330985

申请日：2014-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/50 ,  H04N19/70 ,  H04N19/33 ,  H04N19/436 ,  H04N19/105 ,  H04N19/176 ,  H04N19/187 ,  H04N19/136 ,  H04N19/167

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/187 ,  H04N19/33 ,  H04N19/436 ,  H04N19/70

Abstract: In an example, a method of coding video data includes coding data of a video parameter set (VPS) of a multi-layer bitstream, including at least one of data that indicates whether any layers of the multi-layer bitstream have an inter-layer prediction restriction or data that indicates whether tile boundaries are aligned between at least two of the layers of the multi-layer bitstream, and coding the multi-layer bitstream in accordance with the data of the VPS.

公开(公告)号：US09621919B2

公开(公告)日：2017-04-11

申请号：US14521042

申请日：2014-10-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/136 ,  H04N19/30 ,  H04N19/46 ,  H04N5/91 ,  H04N19/70 ,  H04N19/573 ,  H04N19/58 ,  H04N19/59 ,  H04N21/845 ,  H04N21/854 ,  H04N19/52 ,  H04N19/91

CPC classification number: H04N19/597 ,  H04N5/91 ,  H04N19/136 ,  H04N19/30 ,  H04N19/46 ,  H04N19/52 ,  H04N19/573 ,  H04N19/58 ,  H04N19/59 ,  H04N19/70 ,  H04N19/91 ,  H04N21/8453 ,  H04N21/85406

Abstract: A computing device generates a file that comprises a track box that contains metadata for a track in the file. Media data for the track comprises a sequence of samples, each of the samples being a video access unit of multi-layer video data. As part of generating the file, the computing device generates, in the file, a sub-sample information box that contains flags that specify a type of sub-sample information given in the sub-sample information box. When the flags have a particular value, a sub-sample corresponding to the sub-sample information box contains exactly one coded picture and zero or more non-Video Coding Layer (VCL) Network Abstraction Layer (NAL) units associated with the coded picture.

公开(公告)号：US20170085894A1

公开(公告)日：2017-03-23

申请号：US15269558

申请日：2016-09-19

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/184 ,  H04N19/132

CPC classification number: H04N19/44 ,  H04N19/117 ,  H04N19/132 ,  H04N19/154 ,  H04N19/184 ,  H04N19/187 ,  H04N19/36 ,  H04N19/46 ,  H04N19/80 ,  H04N19/85

Abstract: Processing high dynamic range and or wide color gamut video data using a fixed-point implementation. A method of processing video data may include receiving one or more supplemental enhancement information (SEI) messages that contain information specifying how to determine parameters for performing an inverse dynamic range adjustment process, receiving decoded video data, and performing the inverse dynamic range adjustment process on the decoded video data using fixed-point computing in accordance with the information in the one or more SEI messages.

公开(公告)号：US09596486B2

公开(公告)日：2017-03-14

申请号：US14244743

申请日：2014-04-03

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/103 ,  H04N19/895 ,  H04N21/2343 ,  H04N21/845 ,  H04N21/438

CPC classification number: H04N19/895 ,  H04N21/234327 ,  H04N21/4384 ,  H04N21/8451 ,  H04N21/8455

Abstract: In one example, a device for coding video data includes a video coder configured to code an intra random access point (IRAP) picture of a partially aligned IRAP access unit of video data, and code data that indicates, when performing random access from the partially aligned IRAP access unit, at least one picture of a video coding layer that is not correctly decodable. When the video coder comprises a video decoder, the video decoder may skip decoding of the pictures that are not correctly decodable, assuming random access has been performed starting from the partially aligned IRAP access unit.

Abstract translation: 在一个示例中，用于编码视频数据的设备包括：视频编码器，被配置为对视频数据的部分对准的IRAP存取单元的内部随机接入点（IRAP）图像进行编码;以及代码数据，当从部分地对其进行随机访问时， 对准的IRAP访问单元，至少一个不能正确解码的视频编码层的图片。 当视频编码器包括视频解码器时，假设从部分对准的IRAP访问单元开始执行随机访问，视频解码器可以跳过不能正确解码的图像的解码。

公开(公告)号：US09578328B2

公开(公告)日：2017-02-21

申请号：US14331004

申请日：2014-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/167 ,  H04N19/50 ,  H04N19/70 ,  H04N19/33 ,  H04N19/436 ,  H04N19/105 ,  H04N19/176 ,  H04N19/187 ,  H04N19/136

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/187 ,  H04N19/33 ,  H04N19/436 ,  H04N19/70

Abstract: In an example, a method of coding video data includes determining a location of a reference sample associated with a reference picture of video data based on one or more scaled offset values, where the reference picture is included in a first layer of a multi-layer bitstream and the one or more scaled offset values indicate a difference in scale between the first layer and a second, different layer. The method also includes determining a location of a collocated reference block of video data in the first layer based on the location of the reference sample, and coding a current block of video data in the second layer relative to the collocated reference block.

Abstract translation: 在一个示例中，视频数据的编码方法包括基于一个或多个缩放的偏移值来确定与视频数据的参考图片相关联的参考样本的位置，其中参考图像被包括在多层的第一层中 比特流和一个或多个缩放的偏移值指示第一层和第二不同层之间的比例差异。 该方法还包括基于参考样本的位置来确定第一层中并行的视频数据参考块的位置，以及相对于并置参考块对第二层中的当前视频数据块进行编码。

公开(公告)号：US09479776B2

公开(公告)日：2016-10-25

申请号：US13929052

申请日：2013-06-27

Applicant: Qualcomm Incorporated

Inventor： Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian

IPC: H04N7/32 ,  H04N19/50 ,  H04N19/70 ,  H04N19/463 ,  H04N19/58

CPC classification number: H04N19/50 ,  H04N19/463 ,  H04N19/58 ,  H04N19/70

Abstract: In one example, a device for decoding video data includes a video decoder configured to decode a value representative of a difference between most significant bits (MSBs) of a reference picture order count (POC) value and MSBs of a long-term reference picture (LTRP) POC value, wherein the reference POC value corresponds to a picture for which data must have been received in order to properly decode a current picture, determine the MSBs of the LTRP POC value based on the decoded value and the reference POC value, and decode at least a portion of the current picture relative to the LTRP based at least in part on the LTRP POC value. The picture for which data must have been received in order to properly decode a current picture may correspond to the current picture itself or a most recent random access point (RAP) picture.

Abstract translation: 在一个示例中，用于解码视频数据的设备包括：视频解码器，被配置为对表示参考图像顺序计数（POC）值的最高有效位（MSB）与长期参考图像的MSB之间的差异的值进行解码; LTRP）POC值，其中参考POC值对应于必须接收数据的图像以便正确解码当前图像，基于解码值和参考POC值确定LTRP POC值的MSB，以及 至少部分地基于LTRP POC值来解码当前图片相对于LTRP的至少一部分。 为了正确地解码当前画面而必须接收数据的画面可对应于当前画面本身或最近的随机存取点（RAP）画面。

公开(公告)号：US09467700B2

公开(公告)日：2016-10-11

申请号：US14247066

申请日：2014-04-07

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/91 ,  H04N19/597 ,  H04N19/70 ,  H04N19/46 ,  H04N19/513 ,  H04N19/30 ,  H04N19/44 ,  H04N19/29

CPC classification number: H04N19/91 ,  H04N19/29 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/513 ,  H04N19/597 ,  H04N19/70

Abstract: Systems, methods, and devices for coding multilayer video data are disclosed that may include encoding, decoding, transmitting, or receiving multilayer video data. The systems, methods, and devices may receive or transmit a non-entropy coded representation format within a video parameter set (VPS). The systems, methods, and devices may code (encode or decode) video data based on the non-entropy coded representation format within the VPS, wherein the representation format includes one or more of chroma format, whether different color planes are separately coded, picture width, picture height, luma bit depth, and chroma bit depth.

Abstract translation: 公开了用于编码多层视频数据的系统，方法和设备，其可以包括编码，解码，发送或接收多层视频数据。 系统，方法和设备可以在视频参数集（VPS）内接收或发送非熵编码的表示格式。 系统，方法和设备可以基于VPS内的非熵编码的表示格式对视频数据进行编码（编码或解码），其中表示格式包括色度格式中的一种或多种，​​不同的颜色平面是否被分别编码，图像 宽度，图片高度，亮度位深度和色度位深度。