公开(公告)号：US20160301939A1

公开(公告)日：2016-10-13

申请号：US15092407

申请日：2016-04-06

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Natan Haim Jacobson ,  Rajan Laxman Joshi

IPC: H04N19/196 ,  H04N19/176 ,  H04N19/16 ,  H04N19/137 ,  H04N19/152 ,  H04N19/124 ,  H04N19/184

CPC classification number: H04N19/197 ,  H04N19/124 ,  H04N19/136 ,  H04N19/137 ,  H04N19/14 ,  H04N19/152 ,  H04N19/16 ,  H04N19/176 ,  H04N19/184

Abstract: Quantization parameter (QP) update classification techniques for display stream compression (DSC) are disclosed. In one aspect, a method for determining a quantization parameter (QP) value includes determining whether a current block includes a transition from a flat region to a complex region or is a flat block and determining whether a previous block includes a transition from a flat region to a complex region or is a flat block. The method may also include selecting a default technique or an alternative technique for calculating a QP adjustment value for the current block based on whether the previous and current blocks include a transition from a flat region to a complex region or are flat blocks.

Abstract translation: 公开了用于显示流压缩（DSC）的量化参数（QP）更新分类技术。 一方面，一种用于确定量化参数（QP）值的方法包括确定当前块是否包括从平坦区域到复杂区域的过渡，或者是平坦块，并且确定先前块是否包括从平坦区域 到一个复杂的区域或是一个平坦的块。 该方法还可以包括基于先前和当前块是否包括从平坦区域到复杂区域的过渡来选择用于计算当前块的QP调整值的默认技术或替代技术，或者是平坦块。

公开(公告)号：US09363510B2

公开(公告)日：2016-06-07

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: H04B1/66 ,  H04N19/129 ,  H04N19/13 ,  H04N19/18 ,  H04N19/134 ,  H04N19/436

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：US20160014407A1

公开(公告)日：2016-01-14

申请号：US14795734

申请日：2015-07-09

Applicant: Qualcomm Incorporated

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

IPC: H04N19/105 ,  H04N19/167 ,  H04N19/56 ,  H04N19/186 ,  H04N19/176 ,  H04N19/513 ,  H04N19/159 ,  H04N19/182

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/513 ,  H04N19/56 ,  H04N19/593 ,  H04N19/70 ,  H04N19/90

Abstract: A video coder may determine a palette predictor list comprising one or more candidates. Each respective candidate in the palette predictor list specifies a value of a different respective reconstructed neighboring pixel from among one or more reconstructed neighboring pixels. Each of the one or more reconstructed neighboring pixels is in a line above or a column left of a current block of the video data. The video coder may include, in a palette for the current block, at least one candidate in the palette predictor list.

Abstract translation: 视频编码器可以确定包括一个或多个候选的调色板预测器列表。 调色板预测器列表中的每个候选项从一个或多个重建的相邻像素中指定不同的相应重建的相邻像素的值。 一个或多个重建的相邻像素中的每一个在视频数据的当前块的上方或左侧的列中。 视频编码器可以在调色板预测器列表中的当前块的调色板中包括至少一个候选。

公开(公告)号：US20150373325A1

公开(公告)日：2015-12-24

申请号：US14743829

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Wei Pu ,  Vadim Seregin ,  Li Zhang ,  Joel Sole Rojals ,  Feng Zou ,  Rajan Laxman Joshi

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/587 ,  H04N19/107

CPC classification number: H04N19/593 ,  H04N19/503

Abstract: Techniques are described for palette-based video coding. In palette-based coding, a video coder may form a “palette” as a table of colors for representing video data of a particular area (e.g., a given block). Rather than coding actual pixel values (or their residuals), the video coder may code palette index values for one or more of the pixels that correspond to entries in the palette representing the colors of the pixels. A palette may be explicitly encoded, predicted from previous palette entries, or a combination thereof. In this disclosure, techniques are described for coding a block of video data that has a single color value using a single color mode as a sub-mode of a palette coding mode. The disclosed techniques enable a block having a single color value to be coded with a reduced number of bits compared to a normal mode of the palette coding mode.

Abstract translation: 描述了基于调色板的视频编码技术。 在基于调色板的编码中，视频编码器可以形成“调色板”作为用于表示特定区域（例如给定块）的视频数据的颜色表。 视频编码器不必对实际像素值（或其残差）进行编码，而是可以对与表示像素的颜色的调色板中的条目相对应的一个或多个像素编码调色板索引值。 调色板可以被显式编码，从先前调色板条目预测或其组合。 在本公开中，描述了用于使用单色模式将具有单一颜色值的​​视频数据块编码为调色板编码模式的子模式的技术。 与调色板编码模式的正常模式相比，所公开的技术使具有单个颜色值的块以减少的位数被编码。

公开(公告)号：US20150365671A1

公开(公告)日：2015-12-17

申请号：US14736111

申请日：2015-06-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/186 ,  H04N19/117 ,  H04N19/80 ,  H04N19/126 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/117 ,  H04N19/124 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/86

Abstract: Techniques are described for palette-based video coding. In palette-based coding, a video coder may form a so-called “palette” as a table of colors for representing video data of a given block of video data. Rather than coding actual pixel values or their residuals for the given block, the video coder may code index values for one or more of the pixels. The index values map the pixels to entries in the palette representing the colors of the pixels. Techniques are described for determining the application of deblocking filtering for pixels of palette coded blocks at a video encoder or a video decoder. In addition, techniques are described for determining quantization parameter (QP) values and delta QP values used to quantize escape pixel values of palette coded blocks at the video encoder or the video decoder.

Abstract translation: 描述了基于调色板的视频编码技术。 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”作为用于表示给定的视频数据块的视频数据的颜色表。 视频编码器不需要为给定块编码实际像素值或其残差，而是可以对一个或多个像素的索引值进行编码。 索引值将像素映射到调色板中表示像素颜色的条目。 描述了用于确定在视频编码器或视频解码器处调色板编码块的像素的去块滤波的应用的技术。 此外，描述了用于确定用于量化视频编码器或视频解码器处的调色板编码块的转义像素值的量化参数（QP）值和ΔQP值的技术。

公开(公告)号：US20150358645A1

公开(公告)日：2015-12-10

申请号：US14733722

申请日：2015-06-08

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Natan Haim Jacobson ,  Rajan Laxman Joshi

IPC: H04N19/91 ,  H04N19/119 ,  H04N19/186 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105 ,  H04N19/13

CPC classification number: H04N19/91 ,  H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

Abstract: Entropy coding techniques for display stream compression (DSC) are disclosed. In one aspect, a method of entropy coding video data includes partitioning a block of the video data into a plurality of groups of samples based at least in part on a coding mode of the block. The method further includes entropy coding the block via performing a group-wise skip on at least one of the groups in response to all of the samples in the at least one group being equal to a predetermined value.

Abstract translation: 公开了用于显示流压缩（DSC）的熵编码技术。 一方面，视频数据的熵编码方法包括至少部分地基于块的编码模式将视频数据的块划分成多个采样组。 所述方法还包括响应于所述至少一个组中的所有样本等于预定值而对所述组中的至少一个组执行基于组的跳跃来对所述块进行熵编码。

公开(公告)号：US20150341674A1

公开(公告)日：2015-11-26

申请号：US14719265

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/93 ,  H04N19/176

CPC classification number: H04N19/93 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: In an example a method of processing video data includes determining palette indices of a first row of a block of video data, wherein the palette indices correspond to a palette of one or more colors for coding the block of video data, and wherein the palette indices of the first row include one or more indices that are associated with a color value in the palette and a syntax element that is not associated with a color value in the palette. The method also includes coding a run of palette indices of a second row of the block of video data relative to the palette indices of the first row, wherein the run includes the one or more indices that are associated with a color value in the palette and the syntax element that is not associated with a color value in the palette.

Abstract translation: 在一个示例中，处理视频数据的方法包括确定视频数据块的第一行的调色板索引，其中调色板索引对应于用于编码视频数据块的一种或多种颜色的调色板，并且其中调色板索引 的第一行包括与调色板中的颜色值相关联的一个或多个索引和与调色板中的颜色值不相关联的语法元素。 该方法还包括编码相对于第一行的调色板索引的视频数据块的第二行的调色板索引的运行，其中运行包括与调色板中的颜色值相关联的一个或多个索引，以及 与调色板中的颜色值不相关联的语法元素。

公开(公告)号：US20150341656A1

公开(公告)日：2015-11-26

申请号：US14719260

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/50 ,  H04N19/96 ,  H04N19/119 ,  H04N19/105 ,  H04N19/176

Abstract: In an example a method of processing video data includes determining a first palette for a first block of video data that is located in a first row of blocks, generating a predictor palette for constructing at least one second palette of at least one second block of video data in the first row of blocks coded, reinitializing the predictor palette for determining a third palette of a third block of video data that is located in a second row of blocks, wherein re-initializing the predictor palette comprises re-initializing the predictor palette based on the one or more palette entries of the first palette or an initial predictor palette generated after coding the first block, determining the third palette of the third block based on the re-initialized predictor palette, and coding the third block using the third palette.

Abstract translation: 在一个示例中，处理视频数据的方法包括确定位于第一行块中的第一视频数据块的第一调色板，产生用于构建至少一个第二视频块的至少一个第二调色板的预测器调色板 编码的第一行块中的数据，重新初始化预测器调色板，用于确定位于第二行块中的第三视频数据块的第三调色板，其中重新初始化预测器调色板包括基于预测器调色板重新初始化 在第一调色板的一个或多个调色板条目或在编码第一块之后生成的初始预测器调色板，基于重新初始化的预测器调色板确定第三块的第三调色板，并使用第三调色板对第三块进行编码。

公开(公告)号：US20150256857A1

公开(公告)日：2015-09-10

申请号：US14638965

申请日：2015-03-04

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Xiang Li ,  Marta Karczewicz ,  Krishnakanth Rapaka

IPC: H04N19/86 ,  H04N19/154 ,  H04N19/463 ,  H04N19/14 ,  H04N19/13 ,  H04N19/172

CPC classification number: H04N19/86 ,  H04N19/11 ,  H04N19/13 ,  H04N19/14 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/27 ,  H04N19/463

Abstract: A device configured to code video data includes: a memory configured to store video data, and at least one processor. The at least one processor is configured to: code information indicating whether a block from a current picture will flicker. A determination of whether the block from the current picture will flicker is based on the block in the current picture in a display order and a collocated block from a next picture in the display order.

Abstract translation: 被配置为对视频数据进行编码的设备包括：被配置为存储视频数据的存储器和至少一个处理器。 所述至少一个处理器被配置为：编码指示来自当前图片的块是否闪烁的信息。 确定来自当前图片的块是否闪烁是基于显示顺序中当前图片中的块和来自下一图像的并置块。

公开(公告)号：US20150189319A1

公开(公告)日：2015-07-02

申请号：US14586820

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: H04N19/583 ,  H04N19/124 ,  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 palette for a block of video data, identifying escape pixel(s) not associated with any palette entries, identifying a single quantization parameter (QP) value for all escape pixels of the block for a given color channel using a QP value for non-palette based coding of transform coefficients, dequantizing each escape pixel using the identified QP value, and determining pixel values of the block using the dequantized escape pixels and index values for any pixel(s) associated with any 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。 一种方法包括确定用于视频数据块的调色板，识别与任何调色板条目不相关联的转义像素，使用QP来识别给定颜色通道的块的所有转义像素的单个量化参数（QP）值 变换系数的基于非调色板的编码的值，使用所识别的QP值去量化每个逸出像素，以及使用去量化的转义像素和与任何调色板条目相关联的任何像素的索引值来确定块的像素值。