公开(公告)号：US09319684B2

公开(公告)日：2016-04-19

申请号：US13969406

申请日：2013-08-16

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Liwei Guo ,  Xiang Li ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/60 ,  H04N19/12 ,  H04N19/157 ,  H04N19/17 ,  H04N19/30

CPC classification number: H04N19/00775 ,  H04N19/12 ,  H04N19/157 ,  H04N19/17 ,  H04N19/30 ,  H04N19/60

Abstract: An apparatus for coding video data according to certain aspects includes a memory and a processor in communication with the memory. The memory stores video block information. The video block information includes reference layer block information. The processor determines, based on a parameter of the video block information, a transform function that may be used to code the video block information. The processor may encode or decode the video block information. The transform function may be an alternative transform when the parameter is a predetermined value and a primary transform when the parameter is not the predetermined value. The alternative transform includes one of: a discrete-sine-transform (DST), a Type-I DST, a Type-III DST, a Type-IV DST, a Type-VII DST, a discrete-cosine-transform (DCT), a DCT of different types, and a Karhunen-Loeve transform (KLT).

Abstract translation: 根据某些方面的用于编码视频数据的装置包括与存储器通信的存储器和处理器。 存储器存储视频块信息。 视频块信息包括参考层块信息。 处理器基于视频块信息的参数确定可用于对视频块信息进行编码的变换函数。 处理器可以对视频块信息进行编码或解码。 当参数是预定值时，变换函数可以是替代变换，并且当参数不是预定值时，变换函数可以是一次变换。 替代变换包括以下之一：离散正弦变换（DST），I型DST，III型DST，Type-IV DST，Type-VII DST，离散余弦变换（DCT） ，不同类型的DCT，以及Karhunen-Loeve变换（KLT）。

公开(公告)号：US20150189302A1

公开(公告)日：2015-07-02

申请号：US14586805

申请日：2014-12-30

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Marta Karczewicz ,  Joel Sole Rojals ,  Liwei Guo ,  Rajan Laxman Joshi ,  Feng Zou

IPC: H04N19/44 ,  H04N19/93 ,  H04N19/597

CPC classification number: H04N19/583 ,  H04N19/124 ,  H04N19/127 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593 ,  H04N19/93 ,  H04N19/94

Abstract: In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a number of entries in a palette, and determining whether a block of video data includes any escape pixels not associated with any entry in the palette. The method includes responsive to determining that the number of entries is one, and that the block does not include any escape pixels, bypassing decoding index values for the pixel values of the block, and determining the pixel values of the block to be equal to the one entry in the palette.

Abstract translation: 在基于调色板的编码中，视频编码器可以形成所谓的“调色板”，作为表示给定块的视频数据的颜色表。 视频编码器可以编码当前视频数据块的一个或多个像素值的索引值，其中索引值指示调色板中表示当前块的像素值的条目。 一种方法包括确定调色板中的条目数，以及确定视频数据块是否包括与调色板中的任何条目不相关联的任何转义像素。 该方法包括响应于确定条目的数量是一个，并且块不包括任何逃逸像素，绕过块的像素值的解码索引值，并且确定块的像素值等于 调色板中的一个条目。

公开(公告)号：US20150124865A1

公开(公告)日：2015-05-07

申请号：US14528794

申请日：2014-10-30

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Wei Pu ,  Jianle Chen ,  Joel Sole Rojals ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N19/59 ,  H04N19/176 ,  H04N19/103 ,  H04N19/136

CPC classification number: H04N19/59 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/61

Abstract: A method of decoding video data includes decoding a first block of video data to produce a block of reconstructed luma residual values and a block of predicted chroma residual values, wherein the block of video data has one of a 4:2:0 or a 4:2:2 chroma sub-sampling format. The method further includes performing a color residual prediction process to reconstruct a block of chroma residual values for the first block of video data using a subset of the reconstructed luma residual values as luma predictors for the block of predicted chroma residual values.

Abstract translation: 解码视频数据的方法包括解码第一视频数据块以产生重构亮度残差值块和预测色度残差值块，其中视频数据块具有4:2:0或4中的一个 ：2：2色度次采样格式。 该方法还包括执行彩色残差预测处理，以使用重建的亮度残差值的子集作为预测色度残差值块的亮度预测器来重构第一视频数据块的色度残差块。

公开(公告)号：US20150071359A1

公开(公告)日：2015-03-12

申请号：US14021589

申请日：2013-09-09

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi

IPC: H04N19/60 ,  H04N19/91

CPC classification number: H04N19/91 ,  H04N19/129 ,  H04N19/13 ,  H04N19/18 ,  H04N19/60

Abstract: In some examples, a video coder employs a two-level technique to code information that identifies a position within the block of transform coefficients of one of the coefficients that is a last significant coefficient (LSC) for the block according to a scanning order associated with the block of transform coefficients. For example, a video coder may code a sub-block position that identifies a position of one of the sub-blocks that includes the LSC within the block, and code a coefficient position that identifies a position of the LSC within the sub-block that includes the LSC.

Abstract translation: 在一些示例中，视频编码器采用两级技术来编码信息，该信息根据与该数据块相关联的扫描顺序来识别作为块的最后有效系数（LSC）的一个系数的变换系数块内的位置 变换系数块。 例如，视频编码器可以对在块内标识包括LSC的子块之一的位置的子块位置进行编码，并对识别子块内的LSC的位置的系数位置进行编码， 包括LSC。

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：US20130188698A1

公开(公告)日：2013-07-25

申请号：US13743846

申请日：2013-01-17

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Jianle Chen ,  Joel Sole Rojals ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/102 ,  H04N19/103 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/18 ,  H04N19/42 ,  H04N19/61 ,  H04N19/70

Abstract: In one example, a device includes a video coder configured to code a first set of syntax elements for the coefficients of a residual block of video data, and code, using at least a portion of the first set of syntax elements as context data, a second set of syntax elements for the coefficients, wherein the first set of syntax elements each correspond to a first type of syntax element for the coefficients, and wherein the second set of syntax elements each correspond to a second, different type of syntax element for the coefficients. For example, the first set of syntax elements may comprise values indicating whether the coefficients are significant (that is, have non-zero level values), and the second set of syntax elements may comprise values indicating whether level values for the coefficients have absolute values greater than one.

Abstract translation: 在一个示例中，设备包括视频编码器，其被配置为使用第一组语法元素的至少一部分作为上下文数据来编码视频数据的残余块的系数的第一组语法元素和代码， 用于所述系数的第二组语法元素，其中所述第一语法元素集合每个对应于所述系数的第一类型的语法元素，并且其中所述第二语法元素集合每个对应于用于所述系数的第二不同类型的语法元素 系数。 例如，第一组语法元素可以包括指示系数是否是重要的值（即，具有非零电平值）的值，并且第二组语法元素可以包括指示系数的电平值是否具有绝对值的值 大于一。

公开(公告)号：US20130163664A1

公开(公告)日：2013-06-27

申请号：US13722474

申请日：2012-12-20

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/593 ,  H04N19/61

Abstract: In an example, aspects of this disclosure relate to a method for coding video data that includes predicting a first non-square partition of a current block of video data using a first intra-prediction mode, where the first non-square partition has a first size. The method also includes predicting a second non-square partition of the current block of video data using a second intra-prediction mode, where the second non-square partition has a second size different than the first size. The method also includes coding the current block based on the predicted first and second non-square partitions.

Abstract translation: 在一个示例中，本公开的方面涉及用于对视频数据进行编码的方法，其包括使用第一帧内预测模式来预测当前视频数据块的第一非正方形分区，其中第一非正方形分区具有第一 尺寸。 该方法还包括使用第二帧内预测模式预测当前视频数据块的第二非正方形分区，其中第二非正方形分区具有与第一大小不同的第二大小。 该方法还包括基于预测的第一和第二非正方形分区对当前块进行编码。

公开(公告)号：US20130107970A1

公开(公告)日：2013-05-02

申请号：US13665559

申请日：2012-10-31

Applicant: Qualcomm Incorporated

Inventor： Xianglin Wang ,  Liwei Guo ,  Yunfei Zheng ,  Marta Karczewicz

IPC: H04N7/12

CPC classification number: H04N19/186 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61 ,  H04N19/96

Abstract: A video encoding device is configured to obtain an N by N array of residual values for a luma component and a corresponding N/2 by N array of residual values for a chroma component. The video encoding device may partition the N/2 by N array of residual values for the chroma component into two N/2 by N/2 sub-arrays of chroma residual values. The video encoding device may further partition the sub-arrays of chroma residual values based on the partitioning of the array of residual values for the luma component. Video encoding device may perform a transform on each of the sub-arrays of chroma residual values to generate transform coefficients. A video decoding device may use data defining sub-arrays of transform coefficients to perform a reciprocal process to generate residual values.

Abstract translation: 视频编码装置被配置为获得亮度分量的残留值的N×N阵列和色度分量的残差值的对应N / 2乘以N阵列。 视频编码装置可以将色度分量的N / 2乘以N个残差值的阵列划分为N / 2个N / 2个色度残差子阵列。 视频编码设备还可以基于亮度分量的残差阵列的划分来进一步对色度残差的子阵列进行分区。 视频编码装置可以对色度残差值的每个子阵列执行变换，以产生变换系数。 视频解码装置可以使用定义变换系数的子阵列的数据来执行相互过程以产生残差值。

公开(公告)号：US10257543B2

公开(公告)日：2019-04-09

申请号：US15794507

申请日：2017-10-26

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Peisong Chen ,  Marta Karczewicz

IPC: H04N19/86 ,  H04N19/80 ,  H04N19/17 ,  H04N19/127 ,  H04N19/117 ,  H04N19/176 ,  H04N19/159

Abstract: During a video encoding or decoding process, a predicted prediction block is generated for a CU. The CU may have two or more prediction units (PUs). A computing device selects a neighbor region size. After the computing device selects the neighbor region size, samples in a transition zone of the prediction block are identified. Samples associated with a first PU are in the transition zone if neighbor regions that contain the samples also contain samples associated with a second PU. Samples associated with the second PU may be in the transition zone if neighbor regions that contain the samples also contain samples associated with the first PU. The neighbor regions have the selected neighbor region size. A smoothing operation is then performed on the samples in the transition zone.