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    Systems and methods for low complexity forward transforms using zeroed-out coefficients
    42.
    发明授权
    Systems and methods for low complexity forward transforms using zeroed-out coefficients 有权
    使用零值系数的低复杂度正向变换的系统和方法

    公开(公告)号：US09432696B2

    公开(公告)日：2016-08-30

    申请号：US14216086

    申请日：2014-03-17

    Applicant: QUALCOMM Incorporated

    Inventor： In Suk Chong ,  Yang Yu ,  Xianglin Wang ,  Marta Karczewicz

    IPC: H04N19/61 ,  H04N19/186 ,  H04N19/182 ,  H04N19/176 ,  H04N19/18 ,  H04N19/122 ,  H04N19/132

    CPC classification number: H04N19/61 ,  H04N19/122 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18

    Abstract: Systems and methods for low complexity forward transforms using zeroed-out coefficients are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store a video block. The video encoder further comprises a processor in communication with the memory. The processor is configured to determine a full power value of the video block. The processor is further configured to determine a reduced transform coefficient matrix, wherein the reduced transform coefficient matrix comprises an inner region of zero or non-zero values of the same inner region of a full transform coefficient matrix and an outer region of zero values, wherein the reduced transform coefficient matrix and the full transform coefficient matrix have the same size. The processor is further configured to determine a partial power value of the video block using the reduced transform coefficient matrix. The processor is further configured to transform the video block from a pixel domain to a coefficient domain using the reduced transform coefficient matrix based on the full power value and partial power value. The processor is further configured to encode the transformed video block.

    Abstract translation: 本文描述了使用零缺失系数的低复杂度正向变换的系统和方法。 在本公开中描述的主题的一个方面提供了一种视频编码器，其包括被配置为存储视频块的存储器。 视频编码器还包括与存储器通信的处理器。 处理器被配置为确定视频块的全功率值。 处理器还被配置为确定缩小的变换系数矩阵，其中所述经简化的变换系数矩阵包括全变换系数矩阵和零值的外部区域的相同内部区域的零或非零值的内部区域，其中 减小的变换系数矩阵和全变换系数矩阵具有相同的大小。 处理器还被配置为使用缩减的变换系数矩阵来确定视频块的部分功率值。 处理器还被配置为使用基于全功率值和部分功率值的减小的变换系数矩阵将视频块从像素域变换到系数域。 处理器还被配置为对经变换的视频块进行编码。

    LOW COMPLEXITY SAMPLE ADAPTIVE OFFSET ENCODING
    43.
    发明申请
    LOW COMPLEXITY SAMPLE ADAPTIVE OFFSET ENCODING 有权
    低复杂度自适应偏移编码

    公开(公告)号：US20150215617A1

    公开(公告)日：2015-07-30

    申请号：US14274215

    申请日：2014-05-09

    Applicant: QUALCOMM Incorporated

    Inventor： Athanasios Leontaris ,  Mang Li ,  Sumit Mohan ,  In Suk Chong ,  Hariharan Ganesh Lalgudi

    IPC: H04N19/107 ,  H04N19/14 ,  H04N19/192 ,  H04N19/18 ,  H04N19/91 ,  H04N19/82 ,  H04N19/156

    CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182

    Abstract: At least one processor is configured to encode samples of a largest coding unit (LCU) of a picture using a sample adaptive offset (SAO) mode. To encode the samples of the LCU using SAO, the at least one processor is configured to: calculate differences between corresponding reconstructed samples of the LCU and original samples of the LCU, clip a number of bits from each of the differences to form clipped differences, sum the clipped differences to form a sum of differences, clip the sum of differences to form a clipped sum of differences, calculate a number of the reconstructed samples, clip a number of bits from the number of reconstructed samples to form a dipped number of samples, and divide the clipped sum of differences by the clipped number of samples to produce an offset for the LCU.

    Abstract translation: 至少一个处理器被配置为使用采样自适应偏移（SAO）模式对图像的最大编码单元（LCU）的采样进行编码。 为了使用SAO对LCU的样本进行编码，所述至少一个处理器被配置为：计算LCU的相应重建样本与LCU的原始样本之间的差异，从每个差异剪切位数以形成裁剪的差异， 将剪切的差值相加以形成差值之和，剪除差分之和以形成限幅差值之和，计算重构样本的数量，从重构样本的数量中剪除一些位数以形成浸渍数量的样本 ，并将限制的差值和除以剪切数量的样本，以产生LCU的偏移量。

    OFFSET TYPE AND COEFFICIENTS SIGNALING METHOD FOR SAMPLE ADAPTIVE OFFSET
    44.
    发明申请
    OFFSET TYPE AND COEFFICIENTS SIGNALING METHOD FOR SAMPLE ADAPTIVE OFFSET 有权
    偏移类型和系数自适应偏差的信号方法

    公开(公告)号：US20150172657A1

    公开(公告)日：2015-06-18

    申请号：US14635958

    申请日：2015-03-02

    Applicant: QUALCOMM Incorporated

    Inventor： In Suk Chong ,  Geert Van der Auwera ,  Marta Karczewicz

    IPC: H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/70

    CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/14 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70

    Abstract: This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition.

    Abstract translation: 本公开描述了在视频编码过程中执行采样自适应偏移信令和编码的技术。 本公开的技术包括用于样本自适应偏移信息（即，偏移值和偏移类型）的基于合并和基于预测的信令过程。 所述技术包括确定当前分区的偏移信息，将当前分区的偏移信息与一个或多个相邻分区的偏移信息进行比较，在一个或多个相邻分区之一的偏移信息为 与当前分区的偏移信息相同，并且在一个或多个相邻分区的偏移信息与当前分区的偏移信息不相同的情况下编码多个预测指令之一。

    MULTI-METRIC FILTERING
    45.
    发明申请
    MULTI-METRIC FILTERING 有权
    多重滤波

    公开(公告)号：US20150117555A1

    公开(公告)日：2015-04-30

    申请号：US14592841

    申请日：2015-01-08

    Applicant: QUALCOMM Incorporated

    Inventor： In Suk Chong ,  Marta Karczewicz

    IPC: H04N19/80

    CPC classification number: H04N19/117 ,  H04N7/26255 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

    Abstract: A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels, determine a second metric for the group of pixels, determine a filter based on the first metric and the second metric, and generate a filtered image by applying the filter to the group of pixels. The first metric and second metric can be an activity metric and a direction metric, respectively, or can be other metrics such as an edge metric, horizontal activity metric, vertical activity metric, or diagonal activity metric.

    Abstract translation: 视频编码器或视频解码器的滤波器单元可以确定像素块内的像素组的第一度量，确定该组像素的第二度量，基于第一度量和第二度量来确定滤波器，以及 通过将滤镜应用于像素组来生成滤波图像。 第一度量和第二度量可以分别是活动度量和方向度量，或者可以是其他度量，例如边缘度量，水平活动度量，垂直活动度量或对角活动度量。

    LCU-BASED ADAPTIVE LOOP FILTERING FOR VIDEO CODING
    47.
    发明申请
    LCU-BASED ADAPTIVE LOOP FILTERING FOR VIDEO CODING 有权
    用于视频编码的基于LCU的自适应环路滤波

    公开(公告)号：US20130266059A1

    公开(公告)日：2013-10-10

    申请号：US13858899

    申请日：2013-04-08

    Applicant: QUALCOMM INCORPORATED

    Inventor： In Suk Chong ,  Marta Karczewicz

    IPC: H04N7/26

    CPC classification number: H04N19/169 ,  H04N19/117 ,  H04N19/14 ,  H04N19/147 ,  H04N19/17 ,  H04N19/46 ,  H04N19/82

    Abstract: This disclosure describes techniques associated with filtering reconstructed video data in a video encoding and/or video decoding processes and, more particularly, this disclosure describes techniques related to adaptive loop filtering. According to one technique of this disclosure, instead of implementing region adaptive (RA) classification using a fixed set of regions, a variable number of regions in a picture can be used. According to another technique of this disclosure, a global set of filters can be signaled in a parameter set from an encoder to a decoder, but instead of selecting filters from the global set based on an RA classification or a block adaptive (BA) classification, a filter from the global set can be explicitly signaled, for a given block, using a filter ID associated with the filter.

    Abstract translation: 本公开描述了在视频编码和/或视频解码过程中与重建的视频数据进行滤波相关联的技术，更具体地，本公开描述了与自适应环路滤波有关的技术。 根据本公开的一种技术，代替使用固定的一组区域来实现区域自适应（RA）分类，可以使用图片中的可变数量的区域。 根据本公开的另一技术，可以在从编码器到解码器的参数集中发信号通知全局滤波器集合，而不是基于RA分类或块自适应（BA）分类从全局集合中选择滤波器， 对于给定的块，可以使用与过滤器相关联的过滤器ID来明确地发出来自全局集合的过滤器。

    CODING OF LOOP FILTER PARAMETERS USING A CODEBOOK IN VIDEO CODING
    48.
    发明申请
    CODING OF LOOP FILTER PARAMETERS USING A CODEBOOK IN VIDEO CODING 有权
    使用代码在视频编码中编码环路滤波器参数

    公开(公告)号：US20130215974A1

    公开(公告)日：2013-08-22

    申请号：US13773151

    申请日：2013-02-21

    Applicant: QUALCOMM Incorporated

    Inventor： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

    IPC: H04N7/26

    CPC classification number: H04N19/40 ,  H04N19/463 ,  H04N19/82 ,  H04N19/91

    Abstract: Techniques for coding video data include coding sample adaptive offset (SAO) offset values as part of performing a video coding process. In particular, the techniques include determining the SAO offset values according to a SAO process. The techniques further include storing a codebook defining a plurality of codes for coding different variations of SAO offset values. The techniques also include coding the SAO offset values in accordance with the codebook so as to specify the SAO offset values as one of the plurality of codes defined by the codebook.

    Abstract translation: 用于编码视频数据的技术包括编码样本自适应偏移（SAO）偏移值作为执行视频编码处理的一部分。 特别地，这些技术包括根据SAO过程确定SAO偏移值。 所述技术还包括存储定义用于编码SAO偏移值的不同变化的多个代码的码本。 这些技术还包括根据码本编码SAO偏移值，以便将SAO偏移值指定为由码本定义的多个代码之一。

    LOOP FILTERING CONTROL OVER TILE BOUNDARIES
    49.
    发明申请
    LOOP FILTERING CONTROL OVER TILE BOUNDARIES 审中-公开
    环形过滤控制超过边界

    公开(公告)号：US20130107973A1

    公开(公告)日：2013-05-02

    申请号：US13660789

    申请日：2012-10-25

    Applicant: Qualcomm Incorporated

    Inventor： Ye-Kui Wang ,  In Suk Chong ,  Muhammed Zeyd Coban ,  Marta Karczewicz

    IPC: H04N7/26

    CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/162 ,  H04N19/174 ,  H04N19/70

    Abstract: A video coder can be configured to code a syntax element that indicates if a loop filtering operation, such as deblocking filtering, adaptive loop filtering, or sample adaptive offset filtering, is allowed across a tile boundary. A first value for the syntax element may indicate loop filtering is allowed across the tile boundary, and a second value for the syntax element may indicate loop filtering is not allowed across the tile boundary. If loop filtering is allowed across a tile boundary, additional syntax elements may indicate specifically for which boundaries loop filtering is allowed or disallowed.

    Abstract translation: 视频编码器可以被配置为对语法元素进行编码，该语法元素指示是否允许跨片段边界的循环滤波操作，诸如去块滤波，自适应环路滤波或采样自适应偏移滤波。 语法元素的第一值可以指示跨越块边界的循环滤波，并且语法元素的第二值可以指示不允许跨平铺边界的循环滤波。 如果跨平铺边界允许循环过滤，则附加的语法元素可以专门指示允许或不允许哪个边界环路过滤。

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