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    NON-ZERO ROUNDING AND PREDICTION MODE SELECTION TECHNIQUES IN VIDEO ENCODING
    642.
    发明申请
    NON-ZERO ROUNDING AND PREDICTION MODE SELECTION TECHNIQUES IN VIDEO ENCODING 有权
    视频编码中的非零圆和预测模式选择技术

    公开(公告)号：US20160037181A1

    公开(公告)日：2016-02-04

    申请号：US14880500

    申请日：2015-10-12

    Applicant: QUALCOMM Incorporated

    Inventor： Marta Karczewicz ,  Peisong Chen ,  Yan Ye

    IPC: H04N19/577 ,  H04N19/176 ,  H04N19/44 ,  H04N19/124 ,  H04N19/105 ,  H04N19/91

    CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/91

    Abstract: In one aspect of this disclosure, rounding adjustments to bi-directional predictive data may be purposely eliminated to provide predictive data that lacks any rounding bias. In this case, rounded and unrounded predictive data may both be considered in a rate-distortion analysis to identify the best data for prediction of a given video block. In another aspect of this disclosure, techniques are described for selecting among default weighted prediction, implicit weighted prediction, and explicit weighted prediction. In this context, techniques are also described for adding offset to prediction data, e.g., using the format of explicit weighted prediction to allow for offsets to predictive data that is otherwise determined by implicit or default weighted prediction.

    Abstract translation: 在本公开的一个方面，可以有意地消除对双向预测数据的舍入调整，以提供缺少任何舍入偏差的预测数据。 在这种情况下，可以在速率失真分析中考虑四舍五入和未包围的预测数据，以识别用于预测给定视频块的最佳数据。 在本公开的另一方面，描述了用于在默认加权预测，隐式加权预测和显式加权预测之间进行选择的技术。 在这种情况下，还描述了用于将偏移量添加到预测数据的技术，例如使用显式加权预测的格式来允许否则由隐含或默认加权预测确定的预测数据的偏移。

    SUB-BLOCK PALETTE MODE
    643.
    发明申请
    SUB-BLOCK PALETTE MODE 审中-公开
    小块PALETTE模式

    公开(公告)号：US20160029028A1

    公开(公告)日：2016-01-28

    申请号：US14807687

    申请日：2015-07-23

    Applicant: QUALCOMM Incorporated

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

    IPC: H04N19/176 ,  H04N19/463 ,  H04N19/186

    CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/129 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93 ,  H04N19/94

    Abstract: Video data may comprise one or more blocks, each block being associated with a block palette comprising one or more palette entries specifying pixel values used in the block. A block is further divided into a plurality of sub-blocks. A sub-block scanning order for the block and pixel scanning orders for the sub-blocks are adaptively selected, based upon a distribution of pixel values within the block and sub-blocks. Sub-blocks may be associated with sub-block palettes, specifying pointers to palette entries of the block palette. Some sub-blocks may be encoded based upon pixel values of neighboring sub-blocks.

    Abstract translation: 视频数据可以包括一个或多个块，每个块与块调色板相关联，所述块调色板包括指定在该块中使用的像素值的一个或多个调色板条目。 块被进一步分成多个子块。 基于块和子块内的像素值的分布，自适应地选择用于子块的块和像素扫描顺序的子块扫描顺序。 子块可以与子块调色板相关联，指定指向块调色板的调色板条目的指针。 可以基于相邻子块的像素值来编码一些子块。

    Non-square transforms in intra-prediction video coding
    644.
    发明授权
    Non-square transforms in intra-prediction video coding 有权
    帧内预测视频编码中的非平方变换

    公开(公告)号：US09247254B2

    公开(公告)日：2016-01-26

    申请号：US13659546

    申请日：2012-10-24

    Applicant: Qualcomm Incorporated

    Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

    IPC: H04N11/02 ,  H04N11/04 ,  H04N19/11 ,  H04N19/70 ,  H04N19/46 ,  H04N19/122

    CPC classification number: H04N19/11 ,  H04N19/122 ,  H04N19/46 ,  H04N19/70

    Abstract: This disclosure describes techniques for determining transform partitions in video encoding processes that allow for non-square transform partitions in intra-coded blocks. According to one example of the disclosure, a video coding method comprise partitioning a coding unit into multiple prediction units, and determining a transform partition for each of the prediction units, wherein at least one transform partition is a non-square partition.

    Abstract translation: 本公开描述了用于确定允许帧内编码块中的非平方变换分区的视频编码处理中的变换分区的技术。 根据本公开的一个示例，视频编码方法包括将编码单元划分为多个预测单元，以及为每个预测单元确定变换分区，其中至少一个变换分区是非方形分区。

    METHOD FOR PALETTE MODE CODING
    645.
    发明申请
    METHOD FOR PALETTE MODE CODING 有权
    PALETTE模式编码方法

    公开(公告)号：US20160007042A1

    公开(公告)日：2016-01-07

    申请号：US14754577

    申请日：2015-06-29

    Applicant: QUALCOMM Incorporated

    Inventor： Wei Pu ,  Rajan Laxman Joshi ,  Jianle Chen ,  Marta Karczewicz ,  Cheng-Teh Hsieh ,  Feng Zou ,  Joel Sole Rojals

    IPC: H04N19/593 ,  H04N19/91 ,  H04N19/176

    CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91

    Abstract: A method for decoding video data provided in a bitstream, where the bitstream includes a coding unit (CU) coded in palette mode, includes: parsing a palette associated with the CU provided in the bitstream; parsing one or more run lengths provided in the bitstream that are associated with the CU; parsing one or more index values provided in the bitstream that associated with the CU; and parsing one or more escape pixel values provided in the bitstream that are associated with the CU. The escape pixel values may be parsed from consecutive positions in the bitstream, the consecutive positions being in the bitstream after all of the run lengths and the index values associated with the CU. The method may further include decoding the CU based on the parsed palette, parsed run lengths, parsed index values, and parsed escape values.

    Abstract translation: 一种用于对比特流中提供的视频数据进行解码的方法，其中所述比特流包括以调色板模式编码的编码单元（CU），包括：解析与所述比特流中提供的CU相关联的调色板; 解析与所述CU相关联的位流中提供的一个或多个游程长度; 解析与所述CU相关联的所述比特流中提供的一个或多个索引值; 以及解析与所述CU相关联的位流中提供的一个或多个逃逸像素值。 可以从比特流中的连续位置解析逃逸像素值，连续的位置在所有游程长度和与CU相关联的索引值之后在比特流中。 该方法还可以包括基于解析的调色板，解析的运行长度，解析的索引值和解析的转义值来解码CU。

    BLOCK ADAPTIVE COLOR-SPACE CONVERSION CODING
    646.
    发明申请
    BLOCK ADAPTIVE COLOR-SPACE CONVERSION CODING 审中-公开
    块自适应颜色空间转换编码

    公开(公告)号：US20150373327A1

    公开(公告)日：2015-12-24

    申请号：US14743776

    申请日：2015-06-18

    Applicant: QUALCOMM Incorporated

    Inventor： Li Zhang ,  Jianle Chen ,  Joel Sole Rojals ,  Marta Karczewicz

    IPC: H04N19/124 ,  H04N19/70 ,  H04N19/176

    CPC classification number: H04N19/124 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    Abstract: A device for decoding video data includes a memory configured to store video data and one or more processors configured to: receive a first block of the video data; determine a quantization parameter for the first block; in response to determining that the first block is coded using a color-space transform mode for residual data of the first block, modify the quantization parameter for the first block; perform a dequantization process for the first block based on the modified quantization parameter for the first block; receive a second block of the video data; receive a difference value indicating a difference between a quantization parameter for the second block and the quantization parameter for the first block; determine the quantization parameter for the second block based on the received difference value and the quantization parameter for the first block; and decode the second block based on the determined quantization parameter.

    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和配置成：接收视频数据的第一块的一个或多个处理器; 确定第一块的量化参数; 响应于确定使用用于第一块的残差数据的颜色空间变换模式对第一块进行编码，修改第一块的量化参数; 基于修改的第一块的量化参数对第一块执行去量化处理; 接收第二个视频数据块; 接收指示第二块的量化参数与第一块的量化参数之间的差的差值; 基于接收到的差值和第一块的量化参数来确定第二块的量化参数; 并且基于所确定的量化参数来解码所述第二块。

    DETERMINING APPLICATION OF DEBLOCKING FILTERING TO PALETTE CODED BLOCKS IN VIDEO CODING
    647.
    发明申请
    DETERMINING APPLICATION OF DEBLOCKING FILTERING TO PALETTE CODED BLOCKS IN VIDEO CODING 有权
    决定在视频编码中对PALETTE编码块进行解码过滤的应用

    公开(公告)号：US20150365695A1

    公开(公告)日：2015-12-17

    申请号：US14736102

    申请日：2015-06-10

    Applicant: QUALCOMM Incorporated

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

    IPC: H04N19/517 ,  H04N19/182 ,  H04N19/124 ,  H04N19/176

    CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/186 ,  H04N19/82

    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。

    Harmonized scan order for coding transform coefficients in video coding
    650.
    发明授权
    Harmonized scan order for coding transform coefficients in video coding 有权
    用于视频编码中的编码变换系数的统一扫描顺序

    公开(公告)号：US09197890B2

    公开(公告)日：2015-11-24

    申请号：US14270162

    申请日：2014-05-05

    Applicant: QUALCOMM Incorporated

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

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

    CPC classification number: H04N19/129 ,  H04N19/00109 ,  H04N19/13 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/436 ,  H04N19/463 ,  H04N19/60 ,  H04N19/61 ,  H04N19/619 ,  H04N19/70 ,  H04N19/91

    Abstract: 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.

    Abstract translation: 本公开描述了用于编码与视频编码过程中的残留视频数据块相关联的变换系数的装置和方法。 本公开的方面包括选择重要性地图编码和级别编码的扫描顺序，以及与所选择的扫描顺序一致的用于熵编码的上下文的选择。 本公开提出了对扫描顺序进行协调以编码变换系数的重要性图以及对变换系数的等级进行编码。 提出，显着图的扫描顺序应该在相反方向（即，从较高频率到较低频率）。 本公开还提出了与固定子块相反的子集中的变换系数的扫描。 具体地，根据扫描顺序，在由多个连续系数组成的子集中扫描变换系数。

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