公开(公告)号：US09124872B2

公开(公告)日：2015-09-01

申请号：US13832909

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N19/60 ,  H04N19/176 ,  H04N19/13 ,  H04N19/129 ,  H04N19/102 ,  H04N19/18 ,  H04N19/167 ,  H03M7/40

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for a video coder (e.g., video encoder or video decoder) that is configured to select a context pattern from a plurality of context patterns that are the same for a plurality of scan types. Techniques are also described for a video coder that is configured to select a context pattern that is stored as a one-dimensional context pattern and identifies contexts for two or more scan types.

Abstract translation: 描述了用于视频编码器（例如，视频编码器或视频解码器）的技术，其被配置为从多个扫描类型相同的多个上下文模式中选择上下文模式。 还描述了用于视频编码器的技术，其被配置为选择作为一维上下文模式存储的上下文模式并且识别两种或更多种扫描类型的上下文。

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：US20150117519A1

公开(公告)日：2015-04-30

申请号：US14524601

申请日：2014-10-27

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Rajan Laxman Joshi ,  Wei Pu ,  Joel Sole Rojals ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/186

CPC classification number: H04N19/186 ,  H04N19/105 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176

Abstract: A device for decoding video data includes a memory configured to store video data, and at least one processor. The at least one processor is configured to: determine a first bit-depth of luma residual samples for a block of video data, determine a second bit-depth of predicted chroma residual samples for the block of video data, adjust the luma residual samples based on the first bit-depth and the second bit-depth to produce bit-depth adjusted luma residual samples, determine chroma residual samples for the block of video data based on the bit-depth adjusted luma residual samples and the predicted chroma residual samples, and decode the block of video data based on the luma residual samples and the chroma residual samples.

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以及至少一个处理器。 所述至少一个处理器被配置为：确定视频数据块的亮度残差样本的第一位深度，确定所述视频数据块的预测色度残差样本的第二位深度，基于所述视差数据块调整所述亮度残差样本 在第一位深度和第二位深度上，以产生位深度调整的亮度残差样本，基于比特深度调整的亮度残差样本和预测色残余样本，确定视频数据块的色度残差样本，以及 基于亮度残差样本和色度残差样本对视频数据块进行解码。

公开(公告)号：US20150103906A1

公开(公告)日：2015-04-16

申请号：US14513839

申请日：2014-10-14

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/46 ,  H04N19/593

CPC classification number: H04N19/11 ,  H04N19/17 ,  H04N19/46 ,  H04N19/593 ,  H04N19/597

Abstract: Techniques are described determining a partition pattern for intra-prediction encoding or decoding a depth block from a partition pattern of one or more partition patterns associated with smaller sized blocks. A video encoder may intra-prediction encode the depth block based on the determined partition pattern, and a video decoder may intra-prediction decode the depth block based on the determine partition pattern.

Abstract translation: 描述了技术，从与较小尺寸块相关联的一个或多个分区模式的分区模式确定用于帧内预测编码或解码深度块的分区模式。 视频编码器可以基于确定的分区模式对深度块进行帧内预测编码，并且视频解码器可以基于确定分区模式对深度块进行帧内预测解码。

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。

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：US20150023423A1

公开(公告)日：2015-01-22

申请号：US14333084

申请日：2014-07-16

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/583 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: Techniques are described for determining a block in a reference picture in a reference view based on a disparity vector for a current block. The techniques start the disparity vector from a bottom-right pixel in a center 2×2 sub-block within the current block, and determine a location within the reference picture to which the disparity vector refers. The determined block covers the location referred to by the disparity vector based on the disparity vector starting from the bottom-right pixel in the center 2×2 sub-block within the current block.

Abstract translation: 描述用于基于当前块的视差矢量在参考视图中确定参考图片中的块的技术。 该技术从当前块中的中心2×2子块的右下角像素开始视差矢量，并确定视差矢量所参考的参考图像内的位置。 所确定的块基于从当前块内的中心2×2子块中的右下像素开始的视差矢量来覆盖由视差矢量引用的位置。