公开(公告)号：US20170105005A1

公开(公告)日：2017-04-13

申请号：US15131574

申请日：2016-04-18

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Xuerui Zhang ,  Mayank Tiwari ,  Ning Bi ,  Prasanjit Panda

IPC: H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/58 ,  H04N19/105

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/162 ,  H04N19/172 ,  H04N19/176 ,  H04N19/188 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70

Abstract: Techniques and systems are provided for performing predictive random access using a background picture. For example, a method of decoding video data includes obtaining an encoded video bitstream comprising a plurality of pictures. The plurality of pictures include a plurality of predictive random access pictures. A predictive random access picture is at least partially encoded using inter-prediction based on at least one background picture. The method further includes determining, for a time instance of the video bitstream, a predictive random access picture of the plurality of predictive random access pictures with a time stamp closest in time to the time instance. The method further includes determining a background picture associated with the predictive random access picture, and decoding at least a portion of the predictive random access picture using inter-prediction based on the background picture.

公开(公告)号：US09596448B2

公开(公告)日：2017-03-14

申请号：US14215876

申请日：2014-03-17

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N13/00 ,  H04N19/597

CPC classification number: H04N13/161 ,  H04N19/597

Abstract: A video coder can be configured to perform texture first coding for a first texture view, a first depth view, a second texture view, and a second depth view; for a macroblock of the second texture view, locate a depth block of the first depth view that corresponds to the macroblock; based on at least one depth value of the depth block, derive a disparity vector for the macroblock; code a first sub-block of the macroblock based on the derived disparity vector; and, code a second sub-block of the macroblock based on the derived disparity vector.

Abstract translation: 视频编码器可以被配置为对第一纹理视图，第一深度视图，第二纹理视图和第二深度视图执行纹理第一编码; 对于第二纹理视图的宏块，定位与宏块对应的第一深度视图的深度块; 基于所述深度块的至少一个深度值，导出所述宏块的视差向量; 基于导出的视差矢量对宏块的第一子块进行编码; 并且基于导出的视差矢量对该宏块的第二子块进行编码。

公开(公告)号：US09591303B2

公开(公告)日：2017-03-07

申请号：US13784006

申请日：2013-03-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/00 ,  H04N19/44 ,  H04N19/70 ,  H04N19/172 ,  H04N19/61 ,  H04N19/103 ,  H04N19/107 ,  H04N19/157

CPC classification number: H04N19/44 ,  H04N19/103 ,  H04N19/107 ,  H04N19/157 ,  H04N19/172 ,  H04N19/61 ,  H04N19/70

Abstract: A video coder can be configured to code a random access point (RAP) picture and code one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

Abstract translation: 视频编码器可以被配置为对随机接入点（RAP）图像进行编码，并为RAP图像编码一个或多个可解码的前导图像（DLP），使得在丢弃的目标的所有图像在与显示的RAP图像相关联的DLP之前 订购。

公开(公告)号：US09584792B2

公开(公告)日：2017-02-28

申请号：US14137213

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N11/02 ,  H04N13/00 ,  H04N5/919 ,  H04N5/76 ,  H04N9/804 ,  H04N19/597 ,  H04N19/46 ,  H04N19/70 ,  H04N5/765

CPC classification number: H04N13/161 ,  H04N5/76 ,  H04N5/765 ,  H04N5/919 ,  H04N9/8042 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

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 video data, wherein the track includes one or more views. The method further includes parsing information to determine whether a texture view or a depth view of a reference view is required for decoding at least one of the one or more views in the track. Another example method includes composing a track of video data, wherein the track includes one or more views and composing information that indicates whether a texture view or a depth view of a reference view is required for decoding at least one of the one or more views in the track.

Abstract translation: 这里描述了用于将包含多个编码视图的视频流封装在媒体文件中的技术。 在一个示例中，一种方法包括解析视频数据的轨道，其中轨道包括一个或多个视图。 该方法还包括解析信息以确定是否需要参考视图的纹理视图或深度视图来解码轨道中的一个或多个视图中的至少一个。 另一示例性方法包括构成视频数据的轨道，其中轨道包括一个或多个视图和组成信息，该信息指示是否需要参考视图的纹理视图或深度视图来对一个或多个视图中的至少一个进行解码 轨道。

公开(公告)号：US09578326B2

公开(公告)日：2017-02-21

申请号：US13776063

申请日：2013-02-25

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/46 ,  H04N19/00 ,  H04N19/134

CPC classification number: H04N19/44 ,  H04N19/46 ,  H04N19/70

Abstract: As one example, a method of coding video data includes storing one or more decoding units of video data in a picture buffer. The method further includes obtaining a respective buffer removal time for the one or more decoding units, wherein obtaining the respective buffer removal time comprises receiving a respective signaled value indicative of the respective buffer removal time for at least one of the decoding units. The method further includes removing the decoding units from the picture buffer in accordance with the obtained buffer removal time for each of the decoding units. The method further includes coding video data corresponding to the removed decoding units, wherein coding the video data comprises decoding the at least one of the decoding units.

Abstract translation: 作为一个示例，编码视频数据的方法包括将一个或多个视频数据的解码单元存储在图像缓冲器中。 该方法还包括为一个或多个解码单元获得相应的缓冲器去除时间，其中获得相应的缓冲器去除时间包括接收指示解码单元中的至少一个的相应缓冲器去除时间的相应的信号值。 该方法还包括根据所获得的每个解码单元的缓冲器去除时间从图像缓冲器中去除解码单元。 该方法还包括编码对应于去除的解码单元的视频数据，其中编码视频数据包括对解码单元中的至少一个解码。

公开(公告)号：US09532052B2

公开(公告)日：2016-12-27

申请号：US14245115

申请日：2014-04-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/68 ,  H04N19/597

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

Abstract: In one example, a video coder is configured to code a value for a syntax element indicating whether at least a portion of a picture order count (POC) value of a picture is to be reset to a value of zero, when the value for the syntax element indicates that the portion of the POC value is to be reset to the value of zero, reset at least the portion of the POC value such that the portion of the POC value is equal to zero, and code video data using the reset POC value. Coding video data using the reset POC value may include inter-predicting a block of a subsequent picture relative to the picture, where the block may include a motion parameter that identifies the picture using the reset POC value. The block may be coded using temporal inter-prediction or inter-layer prediction.

Abstract translation: 在一个示例中，视频编码器被配置为将用于表示图片的图片顺序计数（POC）值的至少一部分是否被重置为零的语法元素的值编码为零的值， 语法元素指示POC值的部分将被重置为零值，至少复位POC值的部分，使得POC值的部分等于零，并且使用复位POC来代码视频数据 值。 使用重置POC值编码视频数据可以包括相对于图像预测后续图像的块，其中块可以包括使用复位POC值来标识图像的运动参数。 可以使用时间帧间预测或层间预测对块进行编码。

公开(公告)号：US09532046B2

公开(公告)日：2016-12-27

申请号：US13862282

申请日：2013-04-12

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N19/50 ,  H04N19/463 ,  H04N19/70 ,  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 one or more syntax elements of a current reference picture set (RPS) prediction data structure, wherein at least one of the syntax elements represents a picture order count (POC) difference between a POC value associated with the current RPS and a POC value associated with a previously decoded RPS, form a current RPS based at least in part on the RPS prediction data structure and the previously decoded RPS, and decode one or more pictures using the current RPS. A video encoder may be configured to perform a substantially similar process during video encoding.

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，被配置为对当前参考图像集（RPS）预测数据结构的一个或多个语法元素进行解码，其中至少一个语法元素表示图像顺序计数（POC ）与当前RPS相关联的POC值与与先前解码的RPS相关联的POC值之间的差异，至少部分地基于RPS预测数据结构和先前解码的RPS形成当前RPS，并且使用 目前的RPS。 视频编码器可以被配置为在视频编码期间执行基本相似的处理。

公开(公告)号：US09525861B2

公开(公告)日：2016-12-20

申请号：US13798997

申请日：2013-03-13

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/00 ,  H04N13/00 ,  H04N19/597 ,  H04N19/52 ,  H04N19/139 ,  H04N19/513

CPC classification number: H04N13/161 ,  H04N19/139 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: Techniques are described for determining a disparity vector for a current block based on disparity motion vectors of one or more spatially and temporally neighboring regions to a current block to be predicted. The spatially and temporally neighboring regions include one or a plurality of blocks, and the disparity motion vector represents a single vector in one reference picture list for the plurality of blocks within the spatially or temporally neighboring region. The determined disparity vector could be used to coding tools which utilize the information between different views such as merge mode, advanced motion vector prediction (AMVP) mode, inter-view motion prediction, and inter-view residual prediction.

Abstract translation: 描述了基于一个或多个空间和时间上相邻区域与要预测的当前块的视差运动矢量来确定当前块的视差矢量的技术。 空间和时间上相邻的区域包括一个或多个块，并且视差运动矢量表示在空间或时间上相邻区域内的多个块的一个参考图像列表中的单个向量。 确定的视差向量可以用于利用诸如合并模式，高级运动矢量预测（AMVP）模式，视角间运动预测和视角间残差预测的不同视图之间的信息的编码工具。

公开(公告)号：US09521393B2

公开(公告)日：2016-12-13

申请号：US14036873

申请日：2013-09-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N13/00 ,  H04N19/46 ,  H04N19/30

CPC classification number: H04N13/161 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: A device obtains, from a bitstream that includes an encoded representation of the video data, a non-nested Supplemental Enhancement Information (SEI) message that is not nested within another SEI message in the bitstream. Furthermore, the device determines a layer of the bitstream to which the non-nested SEI message is applicable. The non-nested SEI message is applicable to layers for which video coding layer (VCL) network abstraction layer (NAL) units of the bitstream have layer identifiers equal to a layer identifier of a SEI NAL unit that encapsulates the non-nested SEI message. A temporal identifier of the SEI NAL unit is equal to a temporal identifier of an access unit containing the SEI NAL unit. Furthermore, the device processes, based in part on one or more syntax elements in the non-nested SEI message, video data of the layer of the bitstream to which the non-nested SEI message is applicable.

Abstract translation: 设备从包含视频数据的编码表示的比特流中获得未嵌套在比特流中另一SEI消息内的非嵌套补充增强信息（SEI）消息。 此外，设备确定非嵌套SEI消息可应用到的比特流层。 非嵌套SEI消息适用于层的视频编码层（VCL）网络抽象层（NAL）单元具有层标识符等于封装非嵌套SEI消息的SEI NAL单元的层标识符。 SEI NAL单元的时间标识符等于包含SEI NAL单元的访问单元的时间标识符。 此外，该设备部分地基于非嵌套SEI消息中的一个或多个语法元素处理非嵌套SEI消息可应用于的位流层的视频数据。

公开(公告)号：US20160286229A1

公开(公告)日：2016-09-29

申请号：US15080478

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Ying Chen ,  Li Zhang ,  Hongbin Liu ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/513

CPC classification number: H04N19/513 ,  H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/70 ,  H04N19/96

Abstract: In an example, a method of processing video data includes determining a candidate motion vector for deriving motion information of a current block of video data, where the motion information indicates motion of the current block relative to reference video data. The method also includes determining a derived motion vector for the current block based on the determined candidate motion vector, where determining the derived motion vector comprises performing a motion search for a first set of reference data that corresponds to a second set of reference data outside of the current block.

Abstract translation: 在一个示例中，处理视频数据的方法包括：确定用于导出当前视频数据块的运动信息的候选运动矢量，其中运动信息指示当前块相对于参考视频数据的运动。 该方法还包括基于所确定的候选运动矢量确定当前块的导出运动矢量，其中确定导出的运动矢量包括对与第二组参考数据相对应的参考数据的第一组执行运动搜索 当前块。