公开(公告)号：US20150071357A1

公开(公告)日：2015-03-12

申请号：US14484097

申请日：2014-09-11

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Joel Sole Rojals ,  Liwei Guo ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N19/593

CPC classification number: H04N19/593 ,  H04N19/563

Abstract: In general, techniques are described for coding a current video block within a current picture based on a predictor block within the current picture, the predictor block identified by a block vector. The techniques include identifying an unavailable pixel of the predictor block, obtaining a value for the unavailable pixel based on at least one neighboring reconstructed pixel of the unavailable pixel, and coding the current video block based on a version of the predictor block that includes the obtained value for the unavailable pixel. The unavailable pixel may be located outside of a reconstructed region of the current picture.

Abstract translation: 通常，描述了基于当前图片内的预测块来编码当前图像中的当前视频块的技术，即由块向量识别的预测块。 这些技术包括识别预测器块的不可用像素，基于不可用像素的至少一个相邻重建像素获得不可用像素的值，并且基于包含所获得的预测变量块的预测变量块的版本对当前视频块进行编码 不可用像素的值。 不可用像素可以位于当前图像的重构区域的外部。

公开(公告)号：US20150063454A1

公开(公告)日：2015-03-05

申请号：US14469477

申请日：2014-08-26

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Chao Pang ,  Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/50 ,  H04N19/176

CPC classification number: H04N19/50 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

Abstract: In an example, a method of decoding video data includes generating a residual block of a picture based on a predicted residual block including reconstructing one or more residual values of the residual block based on one or more predicted residual values of the residual block. The method also includes generating a current block of the picture based on a combination of the residual block and a prediction block of the picture.

Abstract translation: 在一个示例中，解码视频数据的方法包括基于预测的残差块生成残差块，所述预测残差块包括基于剩余块的一个或多个预测残差重建残余块的一个或多个剩余值。 该方法还包括基于剩余块和图像的预测块的组合来生成图像的当前块。

公开(公告)号：US11470339B2

公开(公告)日：2022-10-11

申请号：US14469477

申请日：2014-08-26

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Chao Pang ,  Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/176 ,  H04N19/593 ,  H04N19/70 ,  H04N19/50

Abstract: In an example, a method of decoding video data includes generating a residual block of a picture based on a predicted residual block including reconstructing one or more residual values of the residual block based on one or more predicted residual values of the residual block. The method also includes generating a current block of the picture based on a combination of the residual block and a prediction block of the picture.

公开(公告)号：US10412387B2

公开(公告)日：2019-09-10

申请号：US14831644

申请日：2015-08-20

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Ye-Kui Wang ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/159 ,  H04N19/70 ,  H04N19/593 ,  H04N19/523

Abstract: A video coder may include a current picture and a reference picture in a reference picture list. The video coder may determine a co-located block of the reference picture. The co-located block is co-located with a current block of the current picture. Furthermore, the video coder derives a temporal motion vector predictor from the co-located block and may determine the temporal motion vector predictor has sub-pixel precision. The video coder may right-shift the temporal motion vector predictor determined to have sub-pixel precision. In addition, the video coder may determine, based on the right-shifted temporal motion vector predictor, a predictive block within the current picture.

公开(公告)号：US10015515B2

公开(公告)日：2018-07-03

申请号：US14309730

申请日：2014-06-19

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Chao Pang ,  Woo-Shik Kim ,  Wei Pu ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N11/02 ,  H04N19/52 ,  H04N19/593 ,  H04N19/82 ,  H04N19/563 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/513 ,  H04N19/186 ,  H04N19/154 ,  H04N19/523 ,  H04N19/55

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/154 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513 ,  H04N19/523 ,  H04N19/55 ,  H04N19/563 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques coding video data, including a mode for intra prediction of blocks of video data from predictive blocks of video data within the same picture, may include determining a predictive block of video data for the current block of video data, wherein the predictive block of video data is a reconstructed block of video data within the same picture as the current block of video data. A two-dimensional vector, which may be used by a video coder to identify the predictive block of video data, includes a horizontal displacement component and a vertical displacement component relative to the current block of video data. The mode for intra prediction of blocks of video data from predictive blocks of video data within the same picture may be referred to as Intra Block Copy or Intra Motion Compensation.

公开(公告)号：US09918105B2

公开(公告)日：2018-03-13

申请号：US14876699

申请日：2015-10-06

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Ye-Kui Wang ,  Krishnakanth Rapaka ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/593 ,  H04N19/513 ,  H04N19/70 ,  H04N19/44 ,  H04N19/186 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/70

Abstract: In general, the disclosure describes techniques related to block vector coding for Intra Block Copy and Inter modes. In one example, the disclosure is directed to a video coding device comprising a memory configured to store video data and one or more processors. The video coding device is configured to determine a reference picture used for coding the current video block and determine a picture order count (POC) value for the reference picture. In response to the POC value for the reference picture being equal to a POC value for a current picture that includes the current video block, the video coding device sets a value of a syntax element to indicate that a reference picture list includes the current picture. Otherwise, the video coding device sets the value of the syntax element to indicate that the reference picture list does not include the current picture.

公开(公告)号：US09854237B2

公开(公告)日：2017-12-26

申请号：US14882152

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/70 ,  H04N19/52 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: A method of decoding video data comprising receiving a first block of video data in a first frame of video data, the first block of video data being encoded relative to a first predictive block in the first frame of video data, the first predictive block being identified by a block vector, and decoding the block vector using a motion vector prediction process and a same motion vector candidate list as used for decoding a motion vector, wherein the motion vector is used to identify an inter-frame predictive block for a second block of video data coded using inter coding.

公开(公告)号：US20160353117A1

公开(公告)日：2016-12-01

申请号：US15158741

申请日：2016-05-19

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Krishnakanth Rapaka ,  Cheng-Teh Hsieh ,  Rajan Laxman Joshi ,  Ye-Kui Wang ,  Chao Pang ,  Marta Karczewicz

IPC: H04N19/174 ,  H04N19/139 ,  H04N19/513 ,  H04N19/105

CPC classification number: H04N19/174 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/521 ,  H04N19/593 ,  H04N19/70

Abstract: A device for decoding video data includes a memory configured to store the video data and one or more processors configured to receive a slice of the video data, parse an intra block copy (IBC) syntax element to determine that an IBC mode is enabled for the slice, parse a slice type syntax element associated with the slice to determine the slice is an I slice, and decode the slice as an I slice by decoding all blocks of the slice using intra prediction coding modes.

Abstract translation: 用于解码视频数据的设备包括被配置为存储视频数据的存储器和被配置为接收视频数据片段的一个或多个处理器，解析帧内块复制（IBC）语法元素，以确定为IBC模式启用IBC模式 切片，解析与切片相关联的切片类型语法元素以确定切片是I切片，并且通过使用帧内预测编码模式对切片的所有块进行解码来将切片解码为I切片。

公开(公告)号：US20150373334A1

公开(公告)日：2015-12-24

申请号：US14743474

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Marta Karczewicz ,  Chao Pang ,  Joel Sole Rojals

IPC: H04N19/139 ,  H04N19/52 ,  H04N19/176 ,  H04N19/70 ,  H04N19/513 ,  H04N19/13

CPC classification number: H04N19/139 ,  H04N19/13 ,  H04N19/176 ,  H04N19/52 ,  H04N19/521 ,  H04N19/593 ,  H04N19/70

Abstract: An example method for decoding video data includes receiving syntax elements (SEs) for a component of a block vector that represents a displacement between a current block of video data and a predictor block of video data; decoding the SEs to determine a value of the component by at least: decoding a first SE to determine whether or not an absolute value of the component (AbsValcomp) is greater than zero; where AbsValcomp is greater than zero, decoding a second SE to determine whether AbsValcomp is greater than a threshold based on an order of a set of codes; where AbsValcomp is greater than the threshold, decoding, using the set of codes, a third SE to determine AbsValcomp minus an offset based on the order of the set of codes; and where AbsValcomp is greater than zero, decoding a fourth SE to determine a sign of the value of the component.

Abstract translation: 用于解码视频数据的示例性方法包括：接收表示当前视频数据块与视频数据的预测块之间的位移的块向量的分量的语法元素（SE）; 通过至少解码SE来解码组件的值：解码第一SE以确定组件（AbsValcomp）的绝对值是否大于零; 其中AbsValcomp大于零，解码第二SE以基于代码集合的顺序来确定AbsValcomp是否大于阈值; 其中AbsValcomp大于阈值，使用该组代码解码第三SE以基于代码集的顺序来确定AbsValcomp减去偏移; 并且其中AbsValcomp大于零，解码第四SE以确定组件的值的符号。

公开(公告)号：US20150264348A1

公开(公告)日：2015-09-17

申请号：US14659180

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Zou ,  Ying Chen ,  Chao Pang ,  Marta Karczewicz ,  Joel Sole Rojals ,  Wei Pu

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/70 ,  H04N19/176

CPC classification number: H04N19/70 ,  H04N19/593

Abstract: According to aspects of this disclosure, a device for decoding video data includes a memory configured to store the video data and a video decoder comprising one or more processor configured to determine that a current block of the video data is to be decoded using a 1D dictionary mode; receive, for a current pixel of the current block, a first syntax element indicating a starting location of reference pixels and a second syntax element identifying a number of reference pixels; based on the first syntax element and the second syntax element, locate a plurality of luma samples corresponding to the reference pixels; based on the first syntax element and the second syntax element, locate a plurality of chroma samples corresponding to the reference pixels; and copy the plurality of luma samples and the plurality of chroma samples to decode the current block.

Abstract translation: 根据本公开的方面，用于解码视频数据的设备包括被配置为存储视频数据的存储器和包括一个或多个处理器的视频解码器，该处理器被配置为使用1D字典来确定视频数据的当前块要被解码 模式; 针对当前块的当前像素接收指示参考像素的起始位置的第一语法元素和标识参考像素数量的第二语法元素; 基于第一语法元素和第二语法元素，定位与参考像素相对应的多个亮度样本; 基于第一语法元素和第二语法元素，定位与参考像素对应的多个色度样本; 并复制多个亮度样本和多个色度采样以解码当前块。