公开(公告)号：US20140092955A1

公开(公告)日：2014-04-03

申请号：US13953525

申请日：2013-07-29

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui WANG

IPC: H04N7/26

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.

Abstract translation: 本文描述的技术涉及视频编码中的操作点的编码层标识符。 在一个示例中，提供了解码视频数据的方法。 该方法包括解码符合比特流内的视频参数集（VPS）中的语法元素，其指示具有第一组内容的第一操作点。 该方法还包括解码（如果存在的话）符合比特流内的VPS中的语法元素，其指示具有第一操作点的第二内容集合的假设参考解码器（HRD）参数信息，其中符合比特流不包括 VPS，其对于第二操作点重复第一或第二组内容中的至少一个，并且其中解码语法元素包括仅在符合比特流内解码指示第一操作点和HRD参数信息的语法元素。

公开(公告)号：US20140079140A1

公开(公告)日：2014-03-20

申请号：US13952340

申请日：2013-07-26

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui WANG

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/197 ,  H04N19/70

Abstract: This disclosure describes techniques for selection of coded picture buffer (CPB) parameters used to define a CPB for a video coding device for clean random access (CRA) pictures and broken link access (BLA) pictures in a video bitstream. A video coding device receives a bitstream including one or more CRA pictures or BLA pictures, and also receives a message indicating whether to use an alternative set of CPB parameters for at least one of the CRA pictures or BLA pictures. The message may be received from an external means, such as a processing means included in a streaming server or network entity. The video coding device sets a variable defined to indicate the set of CPB parameters for a given one of the pictures based on the received message, and selects the set of CPB parameters for the given one of the pictures based on the variable for the picture.

Abstract translation: 本公开描述了用于选择编码图像缓冲器（CPB）参数的技术，用于定义用于视频比特流中的干净随机访问（CRA）图像和断开链路访问（BLA）图像的视频编码装置的CPB。 视频编码装置接收包括一个或多个CRA图像或BLA图像的比特流，并且还接收指示是否对CRA图像或BLA图像中的至少一个使用CPB参数的替代集合的消息。 该消息可以从诸如包括在流服务器或网络实体中的处理装置的外部装置接收。 视频编码装置根据接收到的消息设定一个变量，该变量被定义为指定给定一个图像的一组CPB参数，并且基于图像的变量来选择给定的一个图像的一组CPB参数。

公开(公告)号：US20140003506A1

公开(公告)日：2014-01-02

申请号：US13929052

申请日：2013-06-27

Applicant: Qualcomm Incorporated

Inventor： Ye-Kui WANG ,  Adarsh Krishnan RAMASUBRAMONIAN

IPC: H04N7/32

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：US20130279576A1

公开(公告)日：2013-10-24

申请号：US13867924

申请日：2013-04-22

Applicant: QUALCOMM INCORPORATED

Inventor： Ying CHEN ,  Ye-Kui WANG

IPC: H04N7/36

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/30 ,  H04N19/51 ,  H04N19/597 ,  H04N19/70

Abstract: This disclosure described techniques for coding layer dependencies for a block of video data. According to these techniques, a video encoder generates layer dependencies associated with a given layer. The video encoder also generates a type of prediction associated with one or more of the layer dependencies. In some examples, the video encoder generates a first syntax element to signal layer dependencies and a second syntax element to signal a type of prediction associated with one or more of the layer dependencies. A video decoder may obtain the layer dependencies associated with a given layer and the type of prediction associated with one or more of the layer dependencies.

Abstract translation: 本公开描述了用于编码视频数据块的层依赖性的技术。 根据这些技术，视频编码器生成与给定层相关联的层依赖性。 视频编码器还生成与一个或多个层依赖关联的预测类型。 在一些示例中，视频编码器生成用于信号层依赖性的第一语法元素和第二语法元素来发送与一个或多个层依赖性相关联的预测类型。 视频解码器可以获得与给定层相关联的层依赖性以及与一个或多个层依赖性相关联的预测类型。

公开(公告)号：US20150382022A1

公开(公告)日：2015-12-31

申请号：US14749527

申请日：2015-06-24

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Ye-Kui WANG

IPC: H04N19/70 ,  H04N19/30

CPC classification number: H04N19/70 ,  H04N19/30 ,  H04N19/50 ,  H04N19/597

Abstract: An apparatus configured to code video information in a bitstream includes a memory and a processor in communication with the memory. The memory is configured to store video information associated with a plurality of video layers in the bitstream, the plurality of video layers in the bitstream divided into a plurality of bitstream partitions, herein each bitstream partition contains at least one of the plurality of video layers. The processor is configured to process a bitstream conformance parameter associated with a first bitstream partition of the plurality of bitstream partitions, wherein the bitstream conformance parameter is applicable to the first bitstream partition but not to another portion of the bitstream not encompassed by the first bitstream partition. The processor may encode or decode the video information in the bitstream.

Abstract translation: 被配置为对位流中的视频信息进行编码的装置包括存储器和与存储器通信的处理器。 存储器被配置为存储与比特流中的多个视频层相关联的视频信息，将比特流中的多个视频层分成多个比特流分区，这里每个比特流分区包含多个视频层中的至少一个。 处理器被配置为处理与多个比特流分区中的第一比特流分区相关联的比特比特流一致性参数，其中比特流一致性参数可应用于第一比特流分区，但不适用于比特流的另一部分，不包括第一比特流分区 。 处理器可以对比特流中的视频信息进行编码或解码。

公开(公告)号：US20150271526A1

公开(公告)日：2015-09-24

申请号：US14657617

申请日：2015-03-13

Applicant: QUALCOMM Incorporated

Inventor： Fnu HENDRY ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Ye-Kui WANG ,  Vadim SEREGIN

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/124 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/60

Abstract: According to certain aspects, an apparatus for coding video information includes a memory and a processor configured to determine whether a first syntax element is present in a bitstream, the first syntax element associated with a sequence parameter set (SPS) and a first flag indicative of whether a temporal identifier (ID) of a reference picture for pictures that refer to the SPS can be nested; and in response to determining that the first syntax element is not present in the bitstream: obtain a second syntax element indicative of a maximum number of temporal sub-layers in a particular layer of the plurality of layers; and determine whether to set the first flag equal to a second flag indicative of whether a temporal ID of a reference picture for any pictures can be nested based at least in part on a value of the second syntax element.

Abstract translation: 根据某些方面，用于对视频信息进行编码的装置包括存储器和处理器，其被配置为确定位流中是否存在第一语法元素，与序列参数集（SPS）相关联的第一语法元素以及指示 是否可以嵌套参考SPS的图片的参考图片的时间标识符（ID）; 并且响应于确定所述第一语法元素不存在于所述比特流中：获得指示所述多个层的特定层中的最大数量的时间子层的第二语法元素; 并且确定是否将所述第一标志设置为等于指示用于任何图片的参考图片的时间ID是否可以至少部分地基于所述第二语法元素的值来嵌套的第二标志。

公开(公告)号：US20150271506A1

公开(公告)日：2015-09-24

申请号：US14657624

申请日：2015-03-13

Applicant: QUALCOMM Incorporated

Inventor： Fnu HENDRY ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Ye-Kui WANG ,  Vadim SEREGIN

IPC: H04N19/169 ,  H04N19/124 ,  H04N19/60 ,  H04N19/187 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/124 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/60

Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor. The memory is configured to store video information associated with one or more layers. The processor is configured to code a current access unit (AU) in a bitstream including a plurality of layers, the plurality of layers including a reference layer and at least one corresponding enhancement layer. The processor is further configured to code a first end of sequence (EOS) network abstraction layer (NAL) unit associated with the reference layer in the current AU, the first EOS NAL unit having the same layer identifier (ID) as the reference layer. The processor is also configured to code a second EOS NAL unit associated with the enhancement layer in the current AU, the second EOS NAL unit having the same layer ID as the enhancement layer.

Abstract translation: 根据某些方面的用于编码视频信息的装置包括存储器和处理器。 存储器被配置为存储与一个或多个层相关联的视频信息。 处理器被配置为对包括多个层的比特流中的当前访问单元（AU）进行编码，所述多个层包括参考层和至少一个对应的增强层。 处理器还被配置为对与当前AU中的参考层相关联的序列（EOS）网络抽象层（NAL）单元进行编码，第一EOS NAL单元具有与参考层相同的层标识符（ID）。 处理器还被配置为对与当前AU中的增强层相关联的第二EOS NAL单元进行编码，第二EOS NAL单元具有与增强层相同的层ID。

公开(公告)号：US20150264370A1

公开(公告)日：2015-09-17

申请号：US14656469

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Ye-Kui WANG ,  Fnu HENDRY

IPC: H04N19/33 ,  H04N19/196 ,  H04N19/187 ,  H04N19/167 ,  H04N19/18

CPC classification number: H04N19/33 ,  H04N19/167 ,  H04N19/18 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/423 ,  H04N19/597 ,  H04N19/70

Abstract: An apparatus according to certain aspects includes a memory and a processor configured to: in response to determining that a reference layer intra random access point (IRAP) picture starts a new coded video sequence (CVS) at the current AU: determine whether the reference layer IRAP picture activates a new video parameter set (VPS) or defines a prediction boundary at the current AU; in response to determining that the reference layer IRAP picture activates a new VPS or defines a prediction boundary at the current AU, remove pictures in the decoded picture buffer (DPB) associated with each of a plurality of layers; and in response to determining that the reference layer IRAP picture does not activate a new VPS and does not define a prediction boundary at the current AU, remove only pictures in the DPB associated with the reference layer.

Abstract translation: 根据某些方面的装置包括存储器和处理器，其被配置为：响应于确定参考层内随机接入点（IRAP）图片在当前AU处开始新的编码视频序列（CVS）：确定参考层 IRAP图片激活新的视频参数集（VPS）或在当前AU定义预测边界; 响应于确定参考层IRAP图片激活新的VPS或在当前AU定义预测边界，去除与多个层中的每一层相关联的解码图像缓冲器（DPB）中的图像; 并且响应于确定参考层IRAP图片不激活新的VPS并且不在当前AU处定义预测边界，仅去除与参考层相关联的DPB中的图片。

公开(公告)号：US20150103923A1

公开(公告)日：2015-04-16

申请号：US14513034

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Ying CHEN ,  Ye-Kui WANG ,  Fnu HENDRY

IPC: H04N19/37

CPC classification number: H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/68 ,  H04N19/70 ,  H04N19/80 ,  H04N19/86

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 video layer having a picture. The processor is configured to determine whether the picture is a non-picture-order-count (POC)-anchor picture, and based on the determination of whether the picture is a non-POC-anchor picture, perform one of (1) refraining from indicating a POC reset in connection with the picture, or (2) indicating the POC reset in connection with the picture. The processor may encode or decode the video information.

Abstract translation: 被配置为对视频信息进行编码的装置包括与存储器单元通信的存储器单元和处理器。 存储单元被配置为存储与具有图像的视频层相关联的视频信息。 处理器被配置为确定图像是非图像顺序计数（POC）图像，并且基于图像是否是非POC锚图像的确定，执行以下中的一个：（1）避免 指示与图像相关的POC复位，或（2）指示与图像相关的POC复位。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20140301466A1

公开(公告)日：2014-10-09

申请号：US14242679

申请日：2014-04-01

Applicant: QUALCOMM INCORPORATED

Inventor： Xiang LI ,  Ye-Kui WANG ,  Ying CHEN ,  Jianle CHEN ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Marta KARCZEWICZ

IPC: H04N19/51 ,  H04N19/34

CPC classification number: H04N19/105 ,  H04N19/136 ,  H04N19/187 ,  H04N19/30 ,  H04N19/597

Abstract: An apparatus for decoding video information according to certain aspects includes a memory unit and a processor operationally coupled to the memory unit. The memory unit is configured to store at least one reference picture list of an enhancement layer, the at least one reference picture list comprising residual prediction reference picture information. The processor is configured to: decode signaled information about residual prediction reference picture generation; generate a residual prediction reference picture based on an enhancement layer reference picture and the decoded signaled information such that the generated residual prediction reference picture has the same motion field and the same picture order count (POC) as the enhancement layer reference picture from which it is generated; and store the generated residual prediction reference picture in the at least one reference picture list of the enhancement layer.

Abstract translation: 根据某些方面的用于解码视频信息的装置包括存储器单元和可操作地耦合到存储器单元的处理器。 存储器单元被配置为存储增强层的至少一个参考图像列表，该至少一个参考图像列表包括残留预测参考图像信息。 处理器被配置为：解码关于残差预测参考图片生成的信号信息; 基于增强层参考图像和解码信号信息生成残差预测参考图像，使得所生成的残差预测参考图像具有与其相同的运动场和与其相同的图像顺序计数（POC） 生成的 并将生成的残差预测参考图像存储在增强层的至少一个参考图像列表中。