公开(公告)号：US20150264376A1

公开(公告)日：2015-09-17

申请号：US14659358

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Zou ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Chao Pang ,  Marta Karczewicz

IPC: H04N19/463 ,  H04N19/196 ,  H04N19/126

CPC classification number: H04N19/463 ,  H04N19/126 ,  H04N19/157 ,  H04N19/197

Abstract: In an example, system and method for coding encoded video data. A quantized residue differences block associated with a current block of a picture is generated and a reconstructed prediction residue for each quantized residue difference in the block of quantized residue differences is generated. Each reconstructed prediction residue is added to its corresponding original prediction value to produce a current block of a picture. Generating the reconstructed prediction residue includes performing inverse quantization on blocks of quantized residue differences, wherein the inverse quantization reconstructs data to which uniform quantization residue differential pulse code modulation (RDPCM) has been applied and wherein the quantization is of the form: ΔXq=floor((X+αQ)/Q) where Q is quantization step and α is quantization offset.

Abstract translation: 在一个例子中，用于编码编码视频数据的系统和方法。 产生与图像的当前块相关联的量化残差差分块，并且生成量化残差差分块中每个量化残差差的重构预测残差。 将每个重建的预测残差加到其对应的原始预测值以产生图像的当前块。 生成重建的预测残差包括对量化残差差分块执行逆量化，其中逆量化重建已应用均匀量化残差差分脉冲编码调制（RDPCM）的数据，其中量化形式为：＆D​​gr; Xq = （（X +αQ）/ Q）其中Q是量化步长，α是量化偏移。

公开(公告)号：US10863171B2

公开(公告)日：2020-12-08

申请号：US16523669

申请日：2019-07-26

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Chao Pang ,  Ying Chen ,  Ye-Kui Wang

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/51 ,  H04N19/503 ,  H04N19/52 ,  H04N19/139 ,  H04N19/159 ,  H04N19/573 ,  H04N19/58

Abstract: An example method for encoding or decoding video data includes storing, by a video coder and in a reference picture buffer, a version of a current picture of the video data, including the current picture in a reference picture list (RPL) used to predict the current picture, and coding, by the video coder and based on the RPL, a block of video data in the current picture based on a predictor block of video data included in the version of the current picture stored in the reference picture buffer.

公开(公告)号：US10070130B2

公开(公告)日：2018-09-04

申请号：US15009657

申请日：2016-01-28

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/513 ,  H04N19/11 ,  H04N19/117 ,  H04N19/13 ,  H04N19/137 ,  H04N19/182 ,  H04N19/186 ,  H04N19/44 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61

Abstract: In one example, a method of coding video data includes coding, from an encoded video bitstream, a syntax element that indicates a number of lines of video data that are in one or more of a plurality of sub-PUs of a current prediction unit (PU) of a current coding unit (CU) of video data. In this example, the method further includes determining, for each respective sub-PU of the plurality of sub-PUs, a respective vector that represents a displacement between the respective sub-PU and a respective predictor block from a plurality of previously decoded blocks of video data. In this example, the method further includes reconstructing each sub-PU of the plurality of sub-PUs based on the respective predictor blocks of video data.

公开(公告)号：US20160057420A1

公开(公告)日：2016-02-25

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 ,  H04N19/513 ,  H04N19/176

CPC classification number: H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/523 ,  H04N19/593 ,  H04N19/70

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.

Abstract translation: 视频编码器可以在参考图片列表中包括当前图片和参考图片。 视频编码器可以确定参考图片的共同定位块。 共址块与当前图像的当前块共同定位。 此外，视频编码器从共址块导出时间运动矢量预测器，并且可以确定时间运动矢量预测器具有子像素精度。 视频编码器可以对确定为具有子像素精度的时间运动矢量预测器进行右移。 此外，视频编码器可以基于右移时间运动矢量预测器确定当前图像内的预测块。

公开(公告)号：US20150382010A1

公开(公告)日：2015-12-31

申请号：US14750935

申请日：2015-06-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/13

CPC classification number: H04N19/176 ,  H04N19/13 ,  H04N19/139 ,  H04N19/184 ,  H04N19/52

Abstract: A method for motion vector difference (MVD) coding of screen content video data is disclosed. In one aspect, the method includes determining an MVD between a predicted motion vector and a current motion vector and generating a binary string comprising n bins via binarizing the MVD. The method further includes determining whether an absolute value of the MVD is greater than a threshold value and encoding a subset of the n bins via an exponential Golomb code having an order that is greater than one in response to the absolute value of the MVD being greater than the threshold value.

Abstract translation: 公开了一种用于屏幕内容视频数据的运动矢量差（MVD）编码的方法。 一方面，该方法包括：通过二值化MVD，确定预测运动矢量与当前运动矢量之间的MVD，并产生包括n个箱的二进制串。 该方法还包括确定MVD的绝对值是否大于阈值，并且通过响应于MVD的绝对值更大的具有大于1的顺序的指数Golomb码对n个存储体的子集进行编码 超过阈值。

公开(公告)号：US20150373358A1

公开(公告)日：2015-12-24

申请号：US14743253

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513 ,  H04N19/52 ,  H04N19/176 ,  H04N19/184 ,  H04N19/174 ,  H04N19/503 ,  H04N19/172

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/174 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data including a plurality of pictures is described. The method includes performing intra-picture prediction on a block of one of the pictures to generate a prediction unit. Performing the intra-picture prediction includes selecting a reference block for intra-block copy prediction of a coding tree unit (CTU). The reference block is selected from a plurality of encoded blocks, and blocks within the CTU encoded with bi-prediction are excluded from selection as the reference block. Performing the intra-picture prediction further includes performing intra-block copy prediction with the selected reference block to generate the prediction unit. The method also includes generating syntax elements encoding the prediction unit based on the performed intra-picture prediction.

Abstract translation: 提供技术和系统用于对视频数据进行编码和解码。 例如，描述了对包括多个图像的视频数据进行编码的方法。 该方法包括对一幅图像的块执行画面内预测，以生成预测单元。 执行图像内预测包括选择用于编码树单元（CTU）的块内复制预测的参考块。 从多个编码块中选择参考块，并且将用双预测编码的CTU内的块从选择中排除为参考块。 执行图像内预测还包括利用所选择的参考块执行块内复制预测以生成预测单元。 该方法还包括基于所执行的图像内预测来生成编码预测单元的语法元素。

公开(公告)号：US20150373357A1

公开(公告)日：2015-12-24

申请号：US14743176

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513 ,  H04N19/184 ,  H04N19/172 ,  H04N19/503 ,  H04N19/52

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/174 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data includes obtaining video data at an encoder, and determining to perform intra-picture prediction on the video data, using intra-block copy prediction, to generate the plurality of encoded video pictures. The method also includes performing the intra-picture prediction on the video data using the intra-block copy prediction, and, in response to determining to perform the intra-picture prediction on the video data using the intra-block copy prediction, disabling at least one of inter-picture bi-prediction or inter-picture uni-prediction for the plurality of encoded video pictures. The method also includes generating the plurality of encoded video pictures based on the received video data according to the performed intra-block copy prediction.

Abstract translation: 提供技术和系统用于对视频数据进行编码和解码。 例如，编码视频数据的方法包括：在编码器处获得视频数据，并且使用块内复制预测确定对视频数据执行画面内预测，以生成多个编码视频图像。 该方法还包括使用块内复制预测对视频数据进行图像内预测，并且响应于使用块内复制预测确定对视频数据执行图像内预测，至少禁用 对于多个经编码的视频图像中的一个图像间预测或图像间预测。 该方法还包括根据所执行的块内复制预测，基于接收到的视频数据生成多个编码视频图像。

公开(公告)号：US20150271515A1

公开(公告)日：2015-09-24

申请号：US14592753

申请日：2015-01-08

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Ying Chen ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/513

CPC classification number: H04N19/52 ,  H04N19/593 ,  H04N19/70

Abstract: In various aspects, this disclosure is directed to an example method for decoding video data. The example method includes determining candidate blocks for a block vector prediction process from a subset of candidate blocks used for an advanced motion vector prediction mode or a merge mode for motion vector prediction process; performing the block vector prediction process for a block of video data using the determined candidate blocks; and decoding the block of video data using intra block copy based on the block vector prediction process.

Abstract translation: 在各方面，本公开涉及用于解码视频数据的示例方法。 示例性方法包括从用于高级运动矢量预测模式的候选块的子集或用于运动矢量预测处​​理的合并模式确定用于块矢量预测处​​理的候选块; 使用所确定的候选块对视频数据块执行块向量预测处理; 以及基于块向量预测处理使用块内副本对视频数据块进行解码。

公开(公告)号：US20150271487A1

公开(公告)日：2015-09-24

申请号：US14663155

申请日：2015-03-19

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Chao Pang ,  Ying Chen ,  Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/573 ,  H04N19/58 ,  H04N19/139 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/503 ,  H04N19/52 ,  H04N19/573 ,  H04N19/58

Abstract: An example method for encoding or decoding video data includes storing, by a video coder and in a reference picture buffer, a version of a current picture of the video data, including the current picture in a reference picture list (RPL) used to predict the current picture, and coding, by the video coder and based on the RPL, a block of video data in the current picture based on a predictor block of video data included in the version of the current picture stored in the reference picture buffer.

Abstract translation: 用于对视频数据进行编码或解码的示例性方法包括：通过视频编码器和参考图像缓冲器，将用于预测图像数据的参考图像列表（RPL）中的包括当前图像的视频数据的当前图像的版本存储 通过视频编码器并且基于RPL，基于存储在参考图像缓冲器中的当前图像的版本中包括的视频数据的预测块，当前图像中的视频数据块。

公开(公告)号：US20150098504A1

公开(公告)日：2015-04-09

申请号：US14510038

申请日：2014-10-08

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Joel Sole Rojals ,  Marta Karczewicz

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

CPC classification number: H04N19/176 ,  H04N19/463 ,  H04N19/517 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91

Abstract: An example method for decoding video data includes receiving a plurality of syntax elements that define a component of a block vector for a current block of video data as part of intra block copying, and determining the component of the block vector based on the plurality of syntax elements by at least: determining, based on a first syntax element, whether or not an absolute value of the component of the block vector is nonzero; determining, based on a second syntax element, the absolute value of the component of the block vector minus an offset; determining, based on a third syntax element, whether the value of the component of the block vector is positive or negative; and determining, based on the first, second, and third syntax elements, whether or not the absolute value of the component of the block vector is greater than one.

Abstract translation: 用于解码视频数据的示例性方法包括：接收多个语法元素，其定义当前块视频数据的块矢量的分量，作为帧内块复制的一部分，以及基于多个语法确定块向量的分量 至少：基于第一语法元素确定块向量的分量的绝对值是否不为零; 基于第二语法元素确定块向量的分量的绝对值减去偏移; 基于第三语法元素确定块向量的分量的值是正还是负; 以及基于第一，第二和第三语法元素确定块向量的分量的绝对值是否大于1。