公开(公告)号：US20150373343A1

公开(公告)日：2015-12-24

申请号：US14742258

申请日：2015-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/187 ,  H04N19/30 ,  H04N19/124 ,  H04N19/176 ,  H04N19/172 ,  H04N19/50 ,  H04N19/597

CPC classification number: H04N19/187 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/31 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/597 ,  H04N19/70

Abstract: An apparatus for encoding video information according to certain aspects includes a memory and a processor configured to: receive a video parameter set (VPS) including one or more representation format syntax structures, the VPS indicating a first representation format syntax structure associated with a first layer of the plurality of layers; receive a sequence parameter set (SPS) including (1) a reference to a second representation format syntax structure in the VPS or (2) a third representation format syntax structure not included in the VPS, each representation format syntax structure including a first flag indicative of whether to code color components of chroma format of a layer separately; and update a value of a first variable indicative of whether to code color components of chroma format of a layer separately without referring to a value of the first flag in the first representation format syntax structure.

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，其被配置为：接收包括一个或多个表示格式语法结构的视频参数集（VPS），所述VPS指示与第一层相关联的第一表示格式语法结构 的多层; 接收序列参数集（SPS），包括（1）对VPS中的第二表示格式语法结构的引用，或者（2）不包括在VPS中的第三表示格式语法结构，每个表示格式语法结构包括第一标志 是否分别对层的色度格式的色彩分量进行编码？ 并且更新指示是否分别编码层的色度格式的颜色分量的第一变量的值，而不参考第一表示格式语法结构中的第一标志的值。

公开(公告)号：US20150103903A1

公开(公告)日：2015-04-16

申请号：US14513030

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/85

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 first video layer having a first picture in a first access unit. The processor is configured to determine whether the first picture in the first access unit is an intra random access point (IRAP) picture, and in response to determining that the first picture in the first access unit is an IRAP picture, provide an indication, in a bitstream, to reset a picture order count (POC) of at least one other picture in the first access unit, wherein the at least one other picture is not an IRAP 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。 存储单元被配置为将具有第一图像的第一视频层相关联的视频信息存储在第一存取单元中。 处理器被配置为确定第一接入单元中的第一图像是否是帧内随机接入点（IRAP）图像，并且响应于确定第一接入单元中的第一图像是IRAP图像，提供在 比特流，以重置第一访问单元中的至少一个其他图片的图片顺序计数（POC），其中至少一个其他图片不是IRAP图片。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20150103887A1

公开(公告)日：2015-04-16

申请号：US14513110

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/187 ,  H04N19/70 ,  H04N19/169

CPC classification number: H04N19/187 ,  H04L65/607 ,  H04N19/188 ,  H04N19/30 ,  H04N19/70

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 first video layer and a second video layer. The processor is configured to process a first instance of a parameter set in a bitstream, the first instance of the parameter set comprising a first indication that the first video layer and the second video layer may utilize the parameter set, and process a second instance of the parameter set in the bitstream, the second instance of the parameter set comprising a second indication: (1) that the second video layer may utilize the parameter set, and (2) that the first video layer may not utilize the parameter set. 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第一视频层和第二视频层相关联的视频信息。 所述处理器被配置为处理比特流中的参数集的第一实例，所述参数集的第一实例包括所述第一视频层和所述第二视频层可以利用所述参数集的第一指示，并且处理 所述比特流中设置的参数，所述参数集的第二实例包括第二指示：（1）所述第二视频层可以利用所述参数集，以及（2）所述第一视频层可能不使用所述参数集。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20150103878A1

公开(公告)日：2015-04-16

申请号：US14513121

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/30 ,  H04L29/06

CPC classification number: H04N19/187 ,  H04L65/607 ,  H04N19/188 ,  H04N19/30 ,  H04N19/70

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 base layer (BL) and an enhancement layer (EL), the BL having a BL picture in a first access unit, and the EL having an EL picture in the first access unit. The BL picture may be associated with a flag. The processor is configured to determine a value of the flag associated with the BL picture, and perform, based on the value of the flag, one of (1) removing one or more EL pictures in a decoded picture buffer (DPB) without outputting the one or more EL pictures before the EL picture is coded, or (2) refraining from removing the one or more EL pictures in the DPB without outputting the one or more EL pictures. 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。 存储器单元被配置为存储与基本层（BL）和增强层（EL）相关联的视频信息，BL在第一存取单元中具有BL图像，并且EL在第一存取单元中具有EL图像。 BL图片可能与一个标志相关联。 处理器被配置为确定与BL图像相关联的标志的值，并且基于标志的值执行（1）去除解码图像缓冲器（DPB）中的一个或多个EL图像之一，而不输出 在EL图像被编码之前的一个或多个EL图像，或者（2）在不输出一个或多个EL图像的情况下避免去除DPB中的一个或多个EL图像。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20140003538A1

公开(公告)日：2014-01-02

申请号：US13924016

申请日：2013-06-21

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Ye-Kui WANG ,  Rajan Laxman JOSHI ,  Ying CHEN

IPC: H04N7/26

CPC classification number: H04N19/44 ,  H04N19/196 ,  H04N19/463 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70

Abstract: A video decoder may be configured to decode a first value representative of a difference between a base most significant bits (MSBs) value of a picture order count (POC) value of a current picture of video data and a first MSBs value of a first POC value of a first long-term reference picture of the video data, decode a second value representative of a difference between a second MSBs value of a second POC value of a second long-term reference picture of the video data and the first MSBs value, wherein the first POC value and the second POC value have different least significant bits values, and decode at least a portion of a current picture of the video data relative to at least one of the first long-term reference picture and the second long-term reference picture.

Abstract translation: 视频解码器可以被配置为对表示视频数据的当前图像的图像顺序计数（POC）值的最基本最高有效位（POC）值与第一POC的第一MSB值之间的差的第一值进行解码 视频数据的第一长期参考图像的值，对表示视频数据的第二长期参考图片的第二POC值的第二MSB值与第一MSB值之间的差的第二值进行解码， 其中所述第一POC值和所述第二POC值具有不同的最低有效位值，并且相对于所述第一长期参考图片和所述第二长期参考图片中的至少一个来解码所述视频数据的当前图片的至少一部分 参考图片。

公开(公告)号：US20130329787A1

公开(公告)日：2013-12-12

申请号：US13828354

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N7/26

CPC classification number: H04N19/00569 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

Abstract: A video coder codes a slice header for a slice of video data. The slice header includes a syntax element comprising identifying information for a long term reference picture, wherein the identifying information is explicitly signaled in the slice header or derived from a sequence parameter set corresponding to the slice. When the syntax element indicates that the identifying information for the long term reference picture is explicitly signaled, to code the slice header, the video coder is further configured to code a value for the identifying information for the long term reference picture in the slice header.

Abstract translation: 视频编码器对切片的视频数据进行编码。 切片标题包括语法元素，其包括识别用于长期参考图像的信息，其中识别信息在切片标题中被明确地发信号，或者从对应于切片的序列参数集导出。 当语法元素指示明确地用信号通知长期参考图像的识别信息时，为了对切片标题进行编码，视频编码器还被配置为在切片标题中编码用于长期参考图片的识别信息的值。

公开(公告)号：US20210051341A1

公开(公告)日：2021-02-18

申请号：US16990910

申请日：2020-08-11

Applicant: QUALCOMM Incorporated

Inventor： Vadim SEREGIN ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Muhammed Zeyd COBAN

IPC: H04N19/59 ,  H04N19/172 ,  H04N19/184

Abstract: Systems, methods, and computer-readable storage media for calculating scaling ratios are described. An example method can include obtaining a current picture of video data and one or more scaling windows associated with the current picture and/or a reference picture selected for use in coding the current picture; determining a first size of the current picture and/or a second size of the reference picture, the first size including a first height and a first width and the second size including a second height and a second width; based on the one or more scaling windows and the first size and/or the second size, determining one or more scaling ratios associated with the current picture and/or the reference picture.

公开(公告)号：US20210014537A1

公开(公告)日：2021-01-14

申请号：US16921106

申请日：2020-07-06

Applicant: QUALCOMM Incorporated

Inventor： Nan HU ,  Vadim SEREGIN ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Muhammed Zeyd COBAN ,  Marta KARCZEWICZ

IPC: H04N19/80 ,  H04N19/176 ,  H04N19/174 ,  H04N19/119 ,  H04N19/172

Abstract: Systems, methods, and media are provided for loop filtering across raster scan slices. One example includes obtaining data comprising one or more pictures, including obtaining a first block located in a first slice of one of the pictures. The example then includes determining a second block is located in a second slice of the picture, the second block including one or more pixels for use in performing loop filtering of a pixel of the first block, and determining that loop filtering across slice boundaries is disabled. Based on this disabling, the example determines that the one or more pixels of the second block are unavailable for performing loop filtering of the pixel of the first block, and duplicates at least one pixel of the first block or at least one pixel of an additional block of the first slice for performing loop filtering of the pixel of the first block.

公开(公告)号：US20180152703A1

公开(公告)日：2018-05-31

申请号：US15826565

申请日：2017-11-29

Applicant: QUALCOMM Incorporated

Inventor： Dmytro RUSANOVSKYY ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Joel SOLE ROJALS

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/136

CPC classification number: H04N19/50 ,  H04N1/64 ,  H04N19/12 ,  H04N19/136 ,  H04N19/17 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/39 ,  H04N19/46 ,  H04N19/52 ,  H04N19/70 ,  H04N21/4316

Abstract: Provided are methods, apparatus, and computer-readable medium for processing video data using a video coding system that implements ST 2094-10 for modifying the color volume of a video signal. In various implementations, metadata blocks that include color volume transform parameters can be included in an encoded bitstream with an encoded video. Mastering display color volume parameters must also be included in the encoded bitstream when the color volume transform parameters are included in the bitstream. When the mastering display color volume parameters are not also included in the bitstream, all or part of the bitstream is non-conforming.

公开(公告)号：US20170105014A1

公开(公告)日：2017-04-13

申请号：US15287494

申请日：2016-10-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Dmytro RUSANOVSKYY ,  Joel SOLE ROJALS ,  Done BUGDAYCI SANSLI ,  Marta KARCZEWICZ

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/85

Abstract: The present disclosure provides various aspects related to luma-driven chroma scaling for high dynamic range and wide color gamut contents. For example, a method of video data decoding may include obtaining video data, where the video data includes a scaled chroma component and a luma component, and where the scaled chroma component is scaled based on a chroma scaling factor that is a non-linear function of the luma component. The method may also include obtaining the chroma scaling factor for the scaled chroma component and generating a chroma component from the scaled chroma component based on the chroma scaling factor. In addition, the method may include outputting the chroma component, which may then be used for further processing.