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：US20170034526A1

公开(公告)日：2017-02-02

申请号：US15219159

申请日：2016-07-25

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Rajan Laxman Joshi ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/513 ,  H04N19/174 ,  H04N19/105 ,  H04N19/159

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/127 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding video data. For example, restrictions on certain prediction modes can be applied for video coding. A restriction can be imposed that prevents inter-prediction bi-prediction from being performed on video data when certain conditions are met. For example, bi-prediction restriction can be based on whether intra-block copy prediction is enabled for one or more coding units or blocks of the video data, whether a value of a syntax element indicates that one or more motion vectors are in non-integer accuracy, whether both motion vectors of a bi-prediction block are in non-integer accuracy, whether the motion vectors of a bi-prediction block are not identical and/or are not from the same reference index, or any combination thereof. If one or more of these conditions are met, the restriction on bi-prediction can be applied, preventing bi-prediction from being performed on certain coding units or blocks.

Abstract translation: 提供了用于编码视频数据的技术和系统。 例如，对某些预测模式的限制可以应用于视频编码。 可以施加限制，其在满足某些条件时防止对视频数据执行帧间预测双预测。 例如，双预测限制可以基于是否对视频数据的一个或多个编码单元或块启用块内复制预测，语法元素的值是否指示一个或多个运动矢量处于非 - 整数精度，双预测块的两个运动矢量是否都是非整数精度，双预测块的运动矢量是否不相同和/或不是相同的参考索引，或其任何组合。 如果满足这些条件中的一个或多个，则可以应用对双预测的限制，防止对某些编码单元或块执行双重预测。

公开(公告)号：US20160337661A1

公开(公告)日：2016-11-17

申请号：US15151416

申请日：2016-05-10

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Vadim Seregin ,  Marta Karczewicz ,  Rajan Laxman Joshi

IPC: H04N19/52 ,  H04N19/182 ,  H04N19/105 ,  H04N19/61

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/182 ,  H04N19/186 ,  H04N19/503 ,  H04N19/523 ,  H04N19/57 ,  H04N19/593 ,  H04N19/61

Abstract: An example method of encoding video data includes determining a resolution that will be used for a motion vector that identifies a predictor block in a current picture of video data for a current block in the current picture of video data; determining, based on the determined resolution, a search region for the current block such that a size of the search region is smaller where the resolution is fractional-pixel than where the resolution is integer-pixel; selecting, from within the search region, a predictor block for the current block; determining the motion vector that identifies the selected predictor block for the current block; and encoding, in a coded video bitstream, a representation of the motion vector.

Abstract translation: 编码视频数据的示例方法包括确定将用于识别视频数据的当前图像中的当前块的视频数据的当前图像中的预测块的运动矢量的分辨率; 基于所确定的分辨率，确定当前块的搜索区域，使得搜索区域的尺寸小于分辨率是分数像素而不是分辨率是整数像素的尺寸; 从搜索区域内选择当前块的预测块; 确定识别当前块的所选预测器块的运动矢量; 并且在编码视频比特流中对运动矢量的表示进行编码。

公开(公告)号：US09344718B2

公开(公告)日：2016-05-17

申请号：US13954749

申请日：2013-07-30

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Vadim Seregin ,  Xiang Li ,  Krishnakanth Rapaka ,  Chengjie Tu ,  Marta Karczewicz

IPC: H04N11/04 ,  H04N19/117 ,  H04N19/159 ,  H04N19/70 ,  H04N19/46 ,  H04N19/187 ,  H04N19/82 ,  H04N19/59 ,  H04N7/26 ,  H04N19/33 ,  H04N19/31

CPC classification number: H04N19/117 ,  H04N19/159 ,  H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N19/46 ,  H04N19/59 ,  H04N19/70 ,  H04N19/82

Abstract: Methods and systems for video image coding are provided. Sets of filters may be selected and applied to video information at least partially based on the type of inter layer prediction implemented in coding the video information. Different filters, or filter sets, may be used for inter layer intra prediction, difference domain intra prediction, and/or difference domain inter prediction. Filter selection information may be embedded in the video bit stream.

Abstract translation: 提供了视频图像编码的方法和系统。 可以至少部分地基于在编码视频信息中实现的层间预测的类型来选择并将其应用于视频信息。 不同的滤波器或滤波器组可以用于层间帧内预测，​​差分帧内预测和/或差域帧间预测。 滤波器选择信息可以嵌入在视频比特流中。

公开(公告)号：US20160105682A1

公开(公告)日：2016-04-14

申请号：US14878825

申请日：2015-10-08

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Chao Pang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/50 ,  H04N19/44

CPC classification number: H04N19/50 ,  H04N19/11 ,  H04N19/157 ,  H04N19/174 ,  H04N19/436 ,  H04N19/44 ,  H04N19/55 ,  H04N19/593

Abstract: According to techniques of this disclosure, a video decoder can be configured to, for one or more blocks coded with wavefront parallel processing enabled, determine a coding tree block (CTB) delay, wherein the CTB delay identifies a delay between when a first row of CTBs starts being decoded and when a second row of CTBs below the first row of CTBs starts being decoded; for a current block of video data coded in an intra-block copy (IBC) mode and coded with wavefront parallel processing disabled, determine an IBC prediction region for the current block within a picture that includes the current block based on the CTB delay that was determined for the one or more blocks coded with wavefront parallel processing enabled; identify, from within the determined IBC prediction region for the current block, a predictive block for the current block; and IBC decode the current block based on the predictive block.

Abstract translation: 根据本公开的技术，视频解码器可以被配置为，对于使能波前并行处理编码的一个或多个块来确定编码树块（CTB）延迟，其中，CTB延迟识别在第一行 CTB开始被解码，并且当CTB的第一行之下的第二行CTB开始被解码时; 对于以片内复制（IBC）模式编码并以波前并行处理禁用编码的视频数据的当前块，基于CTB延迟确定包括当前块的当前块内的当前块的IBC预测区域 为使能波前并行处理编码的一个或多个块确定; 从所确定的当前块的IBC预测区域内识别当前块的预测块; 并且IBC基于预测块来解码当前块。

公开(公告)号：US20160100163A1

公开(公告)日：2016-04-07

申请号：US14860250

申请日：2015-09-21

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Joel Sole Rojals ,  Cheng-Teh Hsieh ,  Chao Pang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/513 ,  H04N19/593 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/593 ,  H04N19/82 ,  H04N19/86

Abstract: Techniques are described for determining boundary strength value for an intra-block copy (IBC)-coded block and for selective storage of unfiltered pixel values of a region of a picture based on whether the region will be used as reference for IBC coding.

Abstract translation: 描述了用于确定块内复制（IBC）编码块的边界强度值并基于该区域将被用作IBC编码的参考来选择性地存储图像区域的未滤波像素值的技术。

公开(公告)号：US20150373370A1

公开(公告)日：2015-12-24

申请号：US14743564

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/513

CPC classification number: H04N19/593 ,  H04N19/52

Abstract: This disclosure describes techniques for coding video data according to an intra Block Copy (BC) coding mode. A block vector difference that identifies a prediction block may be represented by a plurality of syntax elements, which may be encoded and decoded. This disclosure proposes various techniques whereby a video encoder may conditionally signal syntax elements representing the absolute value and/or sign of the components of the block vector difference. Likewise, a video decoder may be configured to infer the values of the syntax elements representing the absolute value and/or sign of the components of the block vector difference when such syntax elements are not signaled.

Abstract translation: 本公开描述了根据块内复制（BC）编码模式对视频数据进行编码的技术。 识别预测块的块向量差可以由多个语法元素表示，其可以被编码和解码。 本公开提出了各种技术，由此视频编码器可以有条件地信号表示块向量差的分量的绝对值和/或符号的语法元素。 类似地，视频解码器可以被配置为当没有用信号通知这些语法元素时，推断表示块向量差的分量的绝对值和/或符号的语法元素的值。

公开(公告)号：US20150341673A1

公开(公告)日：2015-11-26

申请号：US14719222

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Vadim Seregin ,  Wei Pu ,  Marta Karczewicz ,  Joel Sole Rojals ,  Krishnakanth Rapaka

IPC: H04N19/93 ,  H04N19/129 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/70 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/91 ,  H04N19/93

Abstract: In an example, a method of coding video data includes determining, for a pixel associated with a palette index that relates a value of the pixel to a color value in a palette of colors used for coding the pixel, a run length of a run of palette indices being coded with the palette index of the pixel, the method also includes determining a maximum run length for a maximum run of palette indices able to be coded with the palette index of the pixel, and coding data that indicates the run length based on the determined maximum run length.

Abstract translation: 在一个示例中，视频数据的编码方法包括：将与调色板索引相关联的像素与将所述像素的值相关联的颜色值确定为用于对所述像素进行编码的颜色调色板中的颜色值， 调色板索引用像素的调色板索引编码，该方法还包括确定能够用像素的调色板索引编码的调色板索引的最大运行的最大游程长度，以及基于像素的调色板索引的编码数据，其基于 确定最大行程长度。

公开(公告)号：US20150341655A1

公开(公告)日：2015-11-26

申请号：US14719228

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Vadim Seregin ,  Wei Pu ,  Marta Karczewicz ,  Joel Sole Rojals ,  Krishnakanth Rapaka

IPC: H04N19/50 ,  H04N19/186 ,  H04N19/115 ,  H04N19/159

Abstract: In an example, a method of processing video data includes coding at least one of data that indicates a maximum palette size of a palette of color values for coding a block of video data or data that indicates a maximum palette predictor size of a palette predictor for determining the palette of color values. The method also includes coding the block of video data in accordance with the data.

Abstract translation: 在一个示例中，处理视频数据的方法包括编码指示用于编码视频数据块的颜色值的调色板的最大调色板尺寸的数据中的至少一个或指示调色板预测器的最大调色板预测器尺寸的数据 确定色彩值的调色板。 该方法还包括根据数据对视频数据块进行编码。