公开(公告)号：US20150023405A1

公开(公告)日：2015-01-22

申请号：US14334496

申请日：2014-07-17

Applicant: QUALCOMM INCORPORATED

Inventor： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz ,  Jewon Kang ,  Woo-Shik Kim

IPC: H04N19/593 ,  H04N19/82 ,  H04N19/70

CPC classification number: H04N19/593 ,  H04N19/117 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

Abstract: A video decoder may adaptively disable, based on a syntax element, one or more filters used for intra-prediction. In addition, the video decoder may perform intra-prediction to generate prediction data for a current block of a current video slice. Furthermore, a video encoder may adaptively disable one or more filters used for intra-prediction. Furthermore, the video encoder may signal a syntax element that controls the one or more filters. In addition, the video encoder may perform intra prediction to generate prediction data for a current video block the video data.

Abstract translation: 视频解码器可以基于语法元素自适应地禁用用于帧内预测的一个或多个滤波器。 此外，视频解码器可以执行帧内预测，​​以生成当前视频片段的当前块的预测数据。 此外，视频编码器可以自适应地禁用用于帧内预测的一个或多个滤波器。 此外，视频编码器可以发送控制一个或多个滤波器的语法元素。 此外，视频编码器可以执行帧内预测，​​以产生视频数据的当前视频块的预测数据。

公开(公告)号：US20150016501A1

公开(公告)日：2015-01-15

申请号：US14328502

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/50

CPC classification number: G06T9/00 ,  H04N1/644 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/593 ,  H04N19/70 ,  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. According to the techniques, a video coder determines one or more palette entries in a predictive palette that are copied to the current palette, and a number of new palette entries not in the predictive palette that are included in the current palette. The video coder calculates a size of the current palette equal to the sum of the number of the copied palette entries and the number of the new palette entries, and generates the current palette including the copied palette entries and the new palette entries.

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。 根据这些技术，视频编码器确定预测调色板中复制到当前调色板中的一个或多个调色板条目，以及不在预览调色板中的当前调色板中的多个新调色板条目。 视频编码器计算当前调色板的大小等于复制的调色板条目的数量和新调色板条目的数量的总和，并且生成包括复制的调色板条目和新调色板条目的当前调色板。

公开(公告)号：US20140362917A1

公开(公告)日：2014-12-11

申请号：US14295540

申请日：2014-06-04

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04N19/91 ,  H04N19/129 ,  H04N19/44 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

Abstract: 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.

Abstract translation: 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

Applicant: QUALCOMM Incorporated

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

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

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

Abstract: 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.

Abstract translation: 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

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04N19/467 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

Abstract: 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.

Abstract translation: 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：US20130259120A1

公开(公告)日：2013-10-03

申请号：US13793942

申请日：2013-03-11

Applicant: QUALCOMM INCORPORATED

Inventor： Geert Van der Auwera ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/126 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86

Abstract: A device may include a video coder configured to determine an equivalent quantization parameter (QP) for a decoded block of video data using a quantization matrix for the decoded block of video data, determine deblocking parameters based on the determined equivalent QP, and deblock an edge of the decoded block based on the determined deblocking parameters. In particular, the video coder may determine equivalent QPs for two neighboring blocks defining a common edge, and deblock the common edge based on the equivalent QPs. The video coder may determine deblocking parameters, such as β and tc values, based on the equivalent QPs. The video coder may then deblock the common edge based on the deblocking parameters, e.g., determine whether to deblock the common edge, determine whether to apply a strong or a weak filter to the common edge, and determine a width (in number of pixels) for a weak filter.

Abstract translation: 设备可以包括视频编码器，其被配置为使用用于解码的视频数据块的量化矩阵来确定解码的视频数据块的等效量化参数（QP），基于所确定的等效QP来确定解块参数，并且去边缘 基于所确定的去块参数。 特别地，视频编码器可以确定定义公共边缘的两个相邻块的等效QP，并且基于等效QP去除公共边缘。 视频编码器可以基于等效的QP来确定去块参数，诸如β和tc值。 然后，视频编码器可以基于去块参数去除公共边缘，例如，确定是否去除公共边缘，确定是否对公共边缘应用强或弱滤波器，以及确定宽度（以像素数量计） 用于弱过滤器。

公开(公告)号：US20130230097A1

公开(公告)日：2013-09-05

申请号：US13780846

申请日：2013-02-28

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N7/26

CPC classification number: H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/18 ,  H04N19/436 ,  H04N19/91

Abstract: 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.

Abstract translation: 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：US11838548B2

公开(公告)日：2023-12-05

申请号：US17810725

申请日：2022-07-05

Applicant: QUALCOMM Incorporated

Inventor： Peisong Chen ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/60 ,  H04N19/46 ,  H04N19/129 ,  H04N19/176 ,  H04N19/159 ,  H04N19/147 ,  H04N19/122

CPC classification number: H04N19/60 ,  H04N19/122 ,  H04N19/129 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A video encoder may transform residual data by using a transform selected from a group of transforms. The transform is applied to the residual data to create a two-dimensional array of transform coefficients. A scanning mode is selected to scan the transform coefficients in the two-dimensional array into a one-dimensional array of transform coefficients. The combination of transform and scanning mode may be selected from a subset of combinations that is based on an intra-prediction mode. The scanning mode may also be selected based on the transform used to create the two-dimensional array. The transforms and/or scanning modes used may be signaled to a video decoder.

公开(公告)号：US11785222B2

公开(公告)日：2023-10-10

申请号：US16867294

申请日：2020-05-05

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Wei Pu ,  Vadim Seregin ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/136 ,  H04N19/176 ,  H04N19/44 ,  H04N19/182 ,  H04N19/70 ,  H04N19/129 ,  H04N19/463 ,  H04N19/186 ,  H04N19/93

CPC classification number: H04N19/136 ,  H04N19/129 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/44 ,  H04N19/463 ,  H04N19/70 ,  H04N19/93

Abstract: In an example, a method of processing video data may include inferring a pixel scan order for a first palette mode encoded block of video data without receiving a block-level syntax element having a value representative of the pixel scan order for the first palette mode encoded block. The method may include decoding the first palette mode encoded block of video data using the inferred pixel scan order. The method may include receiving a block-level syntax element having a value representative of a pixel scan order for a second palette mode encoded block of video data. The method may include determining the pixel scan order for the second palette mode encoded block of video data based on the received block-level syntax element. The method may include decoding the second palette mode encoded block of video data using the determined pixel scan order.

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.