公开(公告)号：US20160100171A1

公开(公告)日：2016-04-07

申请号：US14876495

申请日：2015-10-06

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/13 ,  H04N19/50 ,  H04N19/70 ,  H04N19/176 ,  H04N19/136

CPC classification number: H04N19/13 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70

Abstract: An example method of coding video data includes determining, for a current block of video data, a palette that includes a plurality of entries that each corresponds to a respective color value; determining a particular entry in the palette that is predicted to correspond to a color value of a current pixel of the current block; selecting a binarization from a plurality of binarizations; and coding, using the selected binarization, an index that indicates which entry in the palette corresponds to a color value for a current pixel of the current block, wherein coding the index using a first binarization of the plurality of binarizations comprises coding a syntax element that indicates whether the index is equal to the particular entry, and wherein coding the index using a second binarization of the plurality of binarizations comprises coding the index using a variable length code without coding the syntax element.

Abstract translation: 对视频数据进行编码的示例方法包括：对于当前视频数据块，确定包括多个条目的调色板，每个条目对应于相应的颜色值; 确定所述调色板中被预测为对应于当前块的当前像素的颜色值的特定条目; 从多个二值化中选择二值化; 以及使用所选择的二值化编码指示所述调色板中的哪个条目对应于当前块的当前像素的颜色值的索引，其中使用所述多个二进制化的第一二进制对所述索引进行编码包括编码语法元素， 指示索引是否等于特定条目，并且其中使用多个二进制化的第二二进制对索引进行编码包括使用可变长度代码对索引进行编码，而不对语法元素进行编码。

公开(公告)号：US20160094851A1

公开(公告)日：2016-03-31

申请号：US14864331

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Joel Sole Rojals ,  Marta Karczewicz ,  Rajan Laxman Joshi ,  Cheng-Teh Hsieh ,  Vadim Seregin

IPC: H04N19/186 ,  H04N19/93 ,  H04N19/103 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/186 ,  H04N19/103 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593 ,  H04N19/91 ,  H04N19/93

Abstract: In an example, a method of processing video data includes determining an input parameter for a truncated binary code that represents a palette index for a pixel of a block of video data based on a number of indices in a palette for the block. The method also includes coding a prefix of the truncated binary code, and determining a palette coding mode for the pixel from a first palette coding mode and a second palette coding mode based only on the prefix of the truncated binary code.

Abstract translation: 在一个示例中，处理视频数据的方法包括基于块的调色板中的索引数量，确定代表视频数据块的像素的调色板索引的截断的二进制代码的输入参数。 该方法还包括对截断的二进制码的前缀进行编码，并且仅基于截断的二进制码的前缀，从第一调色板编码模式和第二调色板编码模式确定该像素的调色板编码模式。

公开(公告)号：US20160057447A1

公开(公告)日：2016-02-25

申请号：US14818134

申请日：2015-08-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/593 ,  H04N19/159 ,  H04N19/85 ,  H04N19/186 ,  H04N19/182 ,  H04N19/105 ,  H04N19/167

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/159 ,  H04N19/167 ,  H04N19/182 ,  H04N19/186 ,  H04N19/27 ,  H04N19/85 ,  H04N19/93

Abstract: Methods incorporating extensions to copy-above mode for palette mode coding are disclosed. In one aspect, the method includes coding a current pixel of a current block of video data in copy-previous mode via coding a previous line index. The coding of the current pixel in copy-previous mode further including identifying a number of candidate values for the previous line index, identifying a number of escape pixels in a column of pixels above the current pixel in the current block, and reducing a number of candidate values of the previous line index by the number of identified escape pixels.

Abstract translation: 公开了将调色板模式编码的复制上述模式的扩展结合起来的方法。 一方面，该方法包括通过对前一行索引进行编码来对上一个模式中的当前视频数据块进行编码。 复制先前模式中的当前像素的编码还包括识别前一行索引的候选值的数量，识别当前块中当前像素上方的像素列中的转义像素的数量，并减少 前一行索引的候选值除以确定的转义像素的数量。

公开(公告)号：US20150341673A1

公开(公告)日：2015-11-26

申请号：US14719222

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/93 ,  H04N19/129 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/70 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/91 ,  H04N19/93

Abstract: In an example, a method of coding video data includes determining, for a pixel associated with a palette index that relates a value of the pixel to a color value in a palette of colors used for coding the pixel, a run length of a run of palette indices being coded with the palette index of the pixel, the method also includes determining a maximum run length for a maximum run of palette indices able to be coded with the palette index of the pixel, and coding data that indicates the run length based on the determined maximum run length.

Abstract translation: 在一个示例中，视频数据的编码方法包括：将与调色板索引相关联的像素与将所述像素的值相关联的颜色值确定为用于对所述像素进行编码的颜色调色板中的颜色值， 调色板索引用像素的调色板索引编码，该方法还包括确定能够用像素的调色板索引编码的调色板索引的最大运行的最大游程长度，以及基于像素的调色板索引的编码数据，其基于 确定最大行程长度。

公开(公告)号：US20150341655A1

公开(公告)日：2015-11-26

申请号：US14719228

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/50 ,  H04N19/186 ,  H04N19/115 ,  H04N19/159

Abstract: In an example, a method of processing video data includes coding at least one of data that indicates a maximum palette size of a palette of color values for coding a block of video data or data that indicates a maximum palette predictor size of a palette predictor for determining the palette of color values. The method also includes coding the block of video data in accordance with the data.

Abstract translation: 在一个示例中，处理视频数据的方法包括编码指示用于编码视频数据块的颜色值的调色板的最大调色板尺寸的数据中的至少一个或指示调色板预测器的最大调色板预测器尺寸的数据 确定色彩值的调色板。 该方法还包括根据数据对视频数据块进行编码。

公开(公告)号：US20150296209A1

公开(公告)日：2015-10-15

申请号：US14685479

申请日：2015-04-13

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/176 ,  H04N19/186 ,  H04N19/182 ,  H04N19/60 ,  H04N19/18

CPC classification number: H04N19/176 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14

Abstract: A system and method for flatness detection for display stream compression (DSC) is disclosed. In one aspect, the method includes determining a first complexity value for a previous block of video data, a second complexity value for a current block of the video data, and a third complexity value for a next block of the video data. The method also includes determining whether the current block includes a transition from a complex region to a flat region based at least in part on the first, second, and third complexity values.

Abstract translation: 公开了用于显示流压缩（DSC）的平坦度检测的系统和方法。 在一个方面，该方法包括确定视频数据的先前块的第一复杂度值，视频数据的当前块的第二复杂度值和视频数据的下一个块的第三复杂度值。 该方法还包括至少部分地基于第一，第二和第三复杂度值来确定当前块是否包括从复杂区到平坦区的过渡。

公开(公告)号：US20150281728A1

公开(公告)日：2015-10-01

申请号：US14667411

申请日：2015-03-24

Applicant: Qualcomm Incorporated

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

IPC: H04N19/52 ,  H04N19/433 ,  H04N19/93 ,  H04N19/44 ,  H04N19/513

CPC classification number: H04N19/93 ,  H04N19/176 ,  H04N19/27 ,  H04N19/593

Abstract: Techniques for encoding a binary prediction vector for predicting a palette for palette-based video coding is described. In one example, a method of decoding video comprises receiving an encoded binary prediction vector for a current block of video data, decoding the encoded binary prediction vector using a run-length decoding technique, generating a palette for the current block of video data based on the binary prediction vector, the binary prediction vector comprising entries indicating whether or not previously-used palette entries are reused for the palette for the current block of video data, and decoding the current block of video data using the palette.

Abstract translation: 描述了用于编码用于基于调色板的视频编码的用于预测调色板的二进制预测向量的技术。 在一个示例中，解码视频的方法包括：接收用于当前视频数据块的编码二进制预测向量，使用游程长度解码技术对编码的二进制预测向量进行解码，基于对视频数据的当前块生成调色板 二进制预测向量，二进制预测向量包括指示先前使用的调色板条目是否被再次用于当前视频数据块的调色板的条目，以及使用调色板解码当前视频数据块。

公开(公告)号：US20150281703A1

公开(公告)日：2015-10-01

申请号：US14667900

申请日：2015-03-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/176

CPC classification number: H04N19/94 ,  H04N19/80

Abstract: Techniques are described for palette-based coding. In palette-based coding, a video coder may form a palette as a table of colors for representing video data of a given block. Palette-based coding may be useful for coding blocks of video data having a relatively small number of colors. 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 whether to disable filtering, such as deblocking filtering or sample adaptive offset (SAO) filtering, of palette coded blocks at a video encoder or a video decoder. Techniques are also described for modify a palette size and palette entries of a palette at the video encoder based on rate-distortion costs.

Abstract translation: 技术描述为基于调色板的编码。 在基于调色板的编码中，视频编码器可以形成调色板作为表示给定块的视频数据的颜色表。 基于调色板的编码对于具有相对较少颜色的视频数据的块的编码可能是有用的。 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。 描述了用于确定是否禁用在视频编码器或视频解码器处的调色板编码块的滤波，例如去块滤波或采样自适应偏移（SAO）滤波）的技术。 还描述了基于速率失真成本来修改视频编码器上的调色板尺寸和调色板条目的技术。

公开(公告)号：US20150264376A1

公开(公告)日：2015-09-17

申请号：US14659358

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Zou ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Chao Pang ,  Marta Karczewicz

IPC: H04N19/463 ,  H04N19/196 ,  H04N19/126

CPC classification number: H04N19/463 ,  H04N19/126 ,  H04N19/157 ,  H04N19/197

Abstract: In an example, system and method for coding encoded video data. A quantized residue differences block associated with a current block of a picture is generated and a reconstructed prediction residue for each quantized residue difference in the block of quantized residue differences is generated. Each reconstructed prediction residue is added to its corresponding original prediction value to produce a current block of a picture. Generating the reconstructed prediction residue includes performing inverse quantization on blocks of quantized residue differences, wherein the inverse quantization reconstructs data to which uniform quantization residue differential pulse code modulation (RDPCM) has been applied and wherein the quantization is of the form: ΔXq=floor((X+αQ)/Q) where Q is quantization step and α is quantization offset.

Abstract translation: 在一个例子中，用于编码编码视频数据的系统和方法。 产生与图像的当前块相关联的量化残差差分块，并且生成量化残差差分块中每个量化残差差的重构预测残差。 将每个重建的预测残差加到其对应的原始预测值以产生图像的当前块。 生成重建的预测残差包括对量化残差差分块执行逆量化，其中逆量化重建已应用均匀量化残差差分脉冲编码调制（RDPCM）的数据，其中量化形式为：＆D​​gr; Xq = （（X +αQ）/ Q）其中Q是量化步长，α是量化偏移。

公开(公告)号：US09055290B2

公开(公告)日：2015-06-09

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 ,  H03M7/40 ,  H03M7/30 ,  H04N19/176 ,  H04N19/70 ,  H04N19/61 ,  H04N19/436 ,  H04N19/91

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。