公开(公告)号：US20140362917A1

公开(公告)日：2014-12-11

申请号：US14295540

申请日：2014-06-04

申请人： QUALCOMM Incorporated

发明人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC分类号： H04N19/44 ,  H04N19/91 ,  H04N19/51 ,  H04N19/593

CPC分类号： H04N19/91 ,  H04N19/129 ,  H04N19/44 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

摘要： Techniques are described for harmonizing coding techniques when residual differential pulse code modulation (RDPCM) is applied to a residual block. In some examples, a scan order used for such a residual block may be required to be the same as when the residual block is generated from intra-predicting the current block and when the residual block is generated from inter-predicting or intra block copy predicting the current block.

摘要翻译： 描述了当剩余差分脉冲编码调制（RDPCM）被应用于残余块时，协调编码技术的技术。 在一些示例中，用于这种残余块的扫描顺序可能需要与当从预测当前块生成剩余块时以及当从预测间预测或块内复制预测产生残差块时相同 当前块。

公开(公告)号：US20140341274A1

公开(公告)日：2014-11-20

申请号：US14448936

申请日：2014-07-31

申请人： QUALCOMM Incorporated

发明人： Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N19/13 ,  H04N19/61 ,  H04N19/176

CPC分类号： H04N19/13 ,  H03M7/30 ,  H03M7/40 ,  H03M7/4018 ,  H03M7/6035 ,  H04N19/176 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

摘要： In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to a scanning order associated with the block when the scanning order comprises a first scanning order, and code interchanged x- and y-coordinates that indicate the position of the last non-zero coefficient within the block according to the scanning order when the scanning order comprises a second scanning order, wherein the second scanning order is different than the first scanning order.

摘要翻译： 在一个示例中，公开了一种用于在视频编码过程期间对与视频数据块相关联的系数进行编码的装置，其中所述装置包括视频编码器，其被配置为编码指示最后非零位置的x坐标和y坐标 当扫描顺序包括第一扫描顺序时，根据与块相关联的扫描顺序，块内的系数，以及根据扫描指示块内的最后非零系数的位置的代码交换的x和y坐标 当扫描顺序包括第二扫描顺序时，其中第二扫描顺序不同于第一扫描顺序。

公开(公告)号：US20140286400A1

公开(公告)日：2014-09-25

申请号：US14223874

申请日：2014-03-24

申请人： QUALCOMM Incorporated

发明人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC分类号： H04N19/176 ,  H04N19/124 ,  H04N19/136 ,  H04N19/107

CPC分类号： H04N19/467 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

摘要： A video coder applies a residual differential pulse code modulation technique to a residual data of a block coded using lossy coding. The block may be coded without application of a transform to the residual data.

摘要翻译： 视频编码器将残差差分脉冲编码调制技术应用于使用有损编码编码的块的残差数据。 可以对块进行编码而不对残留数据进行变换。

公开(公告)号：US20130230097A1

公开(公告)日：2013-09-05

申请号：US13780846

申请日：2013-02-28

申请人： QUALCOMM INCORPORATED

发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Wei-Jung Chien ,  Vadim Seregin ,  Jianle Chen ,  Marta Karczewicz

IPC分类号： H04N7/26

CPC分类号： H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/18 ,  H04N19/436 ,  H04N19/91

摘要： A video coding process that includes defining a context derivation neighborhood for one of a plurality of transform coefficients based on a transform coefficient scan order. The process also includes determining a context for the one of the plurality of transform coefficients based on the context derivation neighborhood. The process also includes coding the one of the plurality of transform coefficients based on the determined context.

摘要翻译： 一种视频编码过程，包括基于变换系数扫描顺序为多个变换系数中的一个定义上下文导出邻域。 该过程还包括基于上下文导出邻域来确定多个变换系数之一的上下文。 该过程还包括基于所确定的上下文对多个变换系数之一进行编码。

公开(公告)号：US20130182772A1

公开(公告)日：2013-07-18

申请号：US13738534

申请日：2013-01-10

申请人： QUALCOMM INCORPORATED

发明人： Vadim Seregin ,  Joel Sole Rojals ,  Marta Karczewicz

IPC分类号： H04N7/26

CPC分类号： H04N19/119 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/18 ,  H04N19/91

摘要： In one example, a device for coding video data includes a video coder configured to determine a context for coding a transform coefficient of a video block based on a region of the video block in which the transform coefficient occurs, and entropy code the transform coefficient using the determined context. The region may comprise one of a first region comprising one or more upper-left 4×4 sub-blocks of transform coefficients of the video block and a second region comprising transform coefficients of the video block outside the first region.

摘要翻译： 在一个示例中，用于编码视频数据的设备包括：视频编码器，被配置为基于发生变换系数的视频块的区域来确定用于编码视频块的变换系数的上下文，并且使用 确定的上下文。 该区域可以包括包括视频块的变换系数的一个或多个左上4×4个子块的第一区域和包括第一区域之外的视频块的变换系数的第二区域之一。

公开(公告)号：US11470339B2

公开(公告)日：2022-10-11

申请号：US14469477

申请日：2014-08-26

申请人： QUALCOMM Incorporated

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

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

摘要： 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：US11405616B2

公开(公告)日：2022-08-02

申请号：US17244789

申请日：2021-04-29

申请人： QUALCOMM Incorporated

发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N19/00 ,  H04N19/129 ,  H04N19/176 ,  H04N19/70 ,  H04N19/196 ,  H04N19/61 ,  H04N19/463 ,  H04N19/91 ,  H04N19/136 ,  H04N19/18 ,  H04N19/167 ,  H04N19/436 ,  H04N7/00 ,  H04N19/60 ,  H04N19/13

摘要： This disclosure describes devices and methods for coding transform coefficients associated with a block of residual video data in a video coding process. Aspects of this disclosure include the selection of a scan order for both significance map coding and level coding, as well as the selection of contexts for entropy coding consistent with the selected scan order. This disclosure proposes a harmonization of the scan order to code both the significance map of the transform coefficients as well as to code the levels of the transform coefficient. It is proposed that the scan order for the significance map should be in the inverse direction (i.e., from the higher frequencies to the lower frequencies). This disclosure also proposes that transform coefficients be scanned in sub-sets as opposed to fixed sub-blocks. In particular, transform coefficients are scanned in a sub-set consisting of a number of consecutive coefficients according to the scan order.

公开(公告)号：US11330272B2

公开(公告)日：2022-05-10

申请号：US16693451

申请日：2019-11-25

申请人： QUALCOMM Incorporated

发明人： Muhammed Zeyd Coban ,  Yunfei Zheng ,  Joel Sole Rojals ,  Marta Karczewicz

IPC分类号： H04N19/129 ,  H04N19/157 ,  H04N19/70 ,  H04N19/176 ,  H04N19/46 ,  H04N19/196 ,  H04N19/463 ,  H04N19/13

摘要： In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, the apparatus comprising a video coder configured to code information that identifies a scanning order associated with the block, wherein to code the information that identifies the scanning order associated with the block, the video coder is configured to determine a most probable scanning order for the block, and code an indication of whether the scanning order associated with the block is the most probable scanning order. In another example, to code the information that identifies the scanning order associated with the block, the video coder is further configured to, in the event the scanning order associated with the block is not the most probable scanning order, code an indication of the scanning order associated with the block.

公开(公告)号：US11323747B2

公开(公告)日：2022-05-03

申请号：US14295540

申请日：2014-06-04

申请人： QUALCOMM Incorporated

发明人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC分类号： H04N19/91 ,  H04N19/44 ,  H04N19/51 ,  H04N19/593 ,  H04N19/129 ,  H04N19/46

摘要： Techniques are described for harmonizing coding techniques when residual differential pulse code modulation (RDPCM) is applied to a residual block. In some examples, a scan order used for such a residual block may be required to be the same as when the residual block is generated from intra-predicting the current block and when the residual block is generated from inter-predicting or intra block copy predicting the current block.

公开(公告)号：US10812820B2

公开(公告)日：2020-10-20

申请号：US15826549

申请日：2017-11-29

申请人： QUALCOMM Incorporated

发明人： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Joel Sole Rojals

IPC分类号： H04N19/50 ,  H04N1/64 ,  H04N19/17 ,  H04N19/70 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/12 ,  H04N19/136 ,  H04N19/46 ,  H04N21/431 ,  H04N5/445 ,  H04N19/39 ,  H04N19/52

摘要： Provided are methods, apparatus, and computer-readable medium for processing video data by a video coding system that implements ST 2094-10. Video data can include at least two video signals, which can be displayed at the same time in different display regions of a video frame. In various implementations, various techniques can be used to determine an association between a set of color volume parameters and a video signal, and this association can be encoded into a bitstream. Upon decoding of the bitstream, the set of color volume parameters associated with a particular video signal can be used to compress the color volume of the video signal into a range that can be displayed by a particular display device.