公开(公告)号：US20170111649A1

公开(公告)日：2017-04-20

申请号：US15274544

申请日：2016-09-23

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/46 ,  H04N19/50 ,  H04N19/177 ,  H04N19/70 ,  H04N19/30 ,  H04N19/187

CPC classification number: H04N19/46 ,  H04N19/177 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/50 ,  H04N19/70 ,  H04N21/85406

Abstract: A device generates, stores, or obtains a file that complies with a restriction specified in a file format to which the file conforms. The restriction requires that for each respective Intra Random Access Point (IRAP) picture, a parameter set required for decoding the respective IRAP picture is in at least one of the following: a sample entry of the respective IRAP picture's track that is applicable to the respective IRAP picture's sample, a sample entry of a non-corresponding track for the respective IRAP picture carrying a reference layer of the respective IRAP picture's layer, the respective IRAP picture's sample, or a temporally collocated sample of the respective IRAP picture's sample in a track of that carries the reference layer.

公开(公告)号：US20170094302A1

公开(公告)日：2017-03-30

申请号：US15266824

申请日：2016-09-15

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/503 ,  H04N19/114 ,  H04N19/169

CPC classification number: H04N21/234327 ,  H04N19/187 ,  H04N19/31 ,  H04N19/70 ,  H04N21/8451 ,  H04N21/8455

Abstract: Systems, methods, and computer readable media are described for providing improved video coding, including improved video stream switching and random access. In some examples, systems, methods, and computer readable media include obtaining video data at an encoder and determining, from the video data, an intra random access point (IRAP) picture. A first set of one or more leading pictures associated with the IRAP picture are coded as random access decodable leading (RADL) pictures based on the first set of one or more leading pictures having a temporal identifier (TemporalId) that is less than or equal to a TemporalId threshold value. A second set of one or more leading pictures associated with the IRAP picture are coded as random access skipped leading (RASL) pictures based on the second set of one or more leading pictures having a TemporalId that is greater than the TemporalId threshold value. The video bitstream can then be generated to include the IRAP picture, the first set of one or more leading pictures, and the second set of one or more leading pictures.

公开(公告)号：US20170085878A1

公开(公告)日：2017-03-23

申请号：US15272172

申请日：2016-09-21

Applicant: QUALCOMM Incorporated

Inventor： Joel Sole Rojals ,  Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Sungwon Lee ,  Ye-Kui Wang

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/18 ,  H04N19/98 ,  H04N19/44

CPC classification number: H04N19/124 ,  G06F3/1407 ,  G06T5/007 ,  G09G3/003 ,  G09G5/04 ,  G09G5/06 ,  G09G2320/0276 ,  G09G2340/06 ,  G09G2370/00 ,  H04N19/18 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  H04N19/85 ,  H04N19/98

Abstract: In one example, a device for processing decoded video data a video decoder implemented by one or more hardware-based processing units comprising digital logic circuitry, and a postprocessing unit implemented by one or more hardware-based processing units comprising digital logic circuitry. The video decoder is configured to decode video data of a video bitsream according to a video coding standard, extract HDR postprocessing data from an SEI message of the video bitstream, and provide the decoded video data and the HDR postprocessing data to the postprocessing unit. The postprocessing unit is configured to process the decoded video data using the HDR postprocessing data according to the video coding standard. The device may additionally determine whether the video decoder is compliant with the video coding standard by comparing the processed video data with reference processed video data.

公开(公告)号：US09602822B2

公开(公告)日：2017-03-21

申请号：US14254400

申请日：2014-04-16

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/13 ,  H04N19/70 ,  H04N19/30 ,  H04N19/169 ,  H04N19/172 ,  H04N19/187

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.

公开(公告)号：US09591324B2

公开(公告)日：2017-03-07

申请号：US14513113

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/503 ,  H04N19/30 ,  H04N19/44 ,  H04N19/51 ,  H04N19/91 ,  H04N19/61 ,  H04N19/70

CPC classification number: H04N19/503 ,  H04N19/30 ,  H04N19/44 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: Systems and methods for separately defining and indicating inter-layer prediction dependencies for a first layer with respect to each of a number of enhancement layers associated with the first layer are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory unit configured to store a first picture associated with a first layer and enhancement layer pictures associated with a plurality of enhancement layers. The video encoder further comprises a processor in communication with the memory unit. The processor is configured to provide a separate indication for each of the enhancement layers that indicates whether the first picture can be used for inter-layer prediction of the enhancement layer picture in a respective enhancement layer.

Abstract translation: 这里描述了用于相对于与第一层相关联的多个增强层中的每一个分别定义和指示第一层的层间预测依赖性的系统和方法。 在本公开中描述的主题的一个方面提供了一种视频编码器，其包括被配置为存储与第一层相关联的第一画面的存储器单元和与多个增强层相关联的增强层画面。 视频编码器还包括与存储器单元通信的处理器。 处理器被配置为为每个增强层提供指示第一图像是否可以用于相应增强层中的增强层图像的层间预测的单独指示。

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：US09584825B2

公开(公告)日：2017-02-28

申请号：US13946730

申请日：2013-07-19

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Ye-Kui Wang

IPC: H04N19/58 ,  H04N19/70

CPC classification number: H04N19/58 ,  H04N19/70

Abstract: A video encoder signals, in a slice header for a current slice of a current picture, a first long-term reference picture (LTRP) entry, the first LTRP entry indicating that a particular reference picture is in a long-term reference picture set of the current picture. Furthermore, the video encoder signals, in the slice header, a second LTRP entry only if second LTRP entry does not indicate that the particular reference picture is in the long-term reference picture set of the current picture.

Abstract translation: 视频编码器在用于当前图像的当前片段的片标题中信号指示第一长期参考图片（LTRP）条目，所述第一LTRP条目指示特定参考图片在长期参考图片集 当前图片。 此外，视频编码器仅在第二LTRP条目未指示特定参考图像在当前图像的长​​期参考图像集中时，在片标题中信号第二LTRP条目。

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。