Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer
    12.
    发明授权
    Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer 有权
    基于多层视频编码器有效压缩运动矢量的方法和装置

    公开(公告)号:US08520962B2

    公开(公告)日:2013-08-27

    申请号:US13355619

    申请日:2012-01-23

    IPC分类号: G06K9/36 G06K9/46

    摘要: A method and apparatus of improving the compression efficiency of a motion vector is provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

    摘要翻译: 提供了提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量,从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量,第二帧速率大于 第一帧速率,如果在相同时刻没有基本层帧的情况下,通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧,并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差,以及所获得的基本层中的运动矢量。

    METHOD AND APPARATUS FOR ENCODING VIDEO USING ADJUSTABLE LOOP FILTERING, AND METHOD AND APPARATUS FOR DECODING VIDEO USING ADJUSTABLE LOOP FILTERING
    13.
    发明申请
    METHOD AND APPARATUS FOR ENCODING VIDEO USING ADJUSTABLE LOOP FILTERING, AND METHOD AND APPARATUS FOR DECODING VIDEO USING ADJUSTABLE LOOP FILTERING 审中-公开
    使用可调节环路滤波编码视频的方法和装置,以及使用可调节环路滤波来解码视频的方法和装置

    公开(公告)号:US20130156111A1

    公开(公告)日:2013-06-20

    申请号:US13809388

    申请日:2011-07-07

    IPC分类号: H04N7/26

    摘要: Provided is a method of decoding a video by using a video decoding processor, the method including: extracting encoding information and encoded video data by receiving and parsing a bit stream of a video; decoding the encoded video data for each coding unit which is a data unit for decoding the video data, by using the encoding information; performing loop filtering on the coding unit with respect to the decoded video data by using internal pixels of the coding unit based on a minimum distance between a pixel on which loop filtering is to be performed and a border of the coding unit; and restoring the video by combining the decoded video data and data on which the loop filtering is performed, for each coding unit.

    摘要翻译: 提供了一种通过使用视频解码处理器对视频进行解码的方法,所述方法包括:通过接收和解析视频的比特流来提取编码信息和编码视频数据; 通过使用编码信息对作为用于解码视频数据的数据单元的每个编码单元的编码视频数据进行解码; 根据要进行环路滤波的像素与编码单元的边界之间的最小距离,通过使用编码单元的内部像素,对编码单元对编码单元执行环路滤波; 并且对于每个编码单元,通过组合解码的视频数据和执行了环路滤波的数据来恢复视频。

    METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING A TRANSFORM COEFFICIENT
    14.
    发明申请
    METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING A TRANSFORM COEFFICIENT 有权
    用于篡改编码/解码变换系数的方法和装置

    公开(公告)号:US20130114731A1

    公开(公告)日:2013-05-09

    申请号:US13809375

    申请日:2011-07-08

    IPC分类号: H04N7/26

    摘要: A method and apparatus for entropy coding and decoding a transformation block are provided. The method of entropy coding a transformation block includes:determining, according to a certain scan order, a location of a last significant transformation coefficient having a non-zero value from among transformation coefficients included in a transformation block having a certain size; and coding information about the determined location of the last significant transformation coefficient by using a horizontal axis direction location of the last significant transformation coefficient and a vertical axis direction location in the transformation block of the last significant transformation coefficient.

    摘要翻译: 提供了一种用于熵编码和解码变换块的方法和装置。 对变换块进行熵编码的方法包括:根据特定扫描顺序,从包含在具有一定大小的变换块中的变换系数中,确定具有非零值的最后有效变换系数的位置; 以及通过使用最后一个有效变换系数的水平轴方向位置和最后一个有效变换系数的变换块中的垂直轴方向位置来编码关于最后的有效变换系数的确定位置的信息。

    Method and apparatus for enhancing performance of entropy coding, and video coding method and apparatus using the entropy coding performance enhancing method
    17.
    发明申请
    Method and apparatus for enhancing performance of entropy coding, and video coding method and apparatus using the entropy coding performance enhancing method 有权
    用于增强熵编码性能的方法和装置,以及使用熵编码性能增强方法的视频编码方法和装置

    公开(公告)号:US20070069926A1

    公开(公告)日:2007-03-29

    申请号:US11486175

    申请日:2006-07-14

    IPC分类号: H03M7/40

    摘要: A method and apparatus for enhancing the performance of entropy coding in a multilayer-based codec system are provided. In a variable length coding method for lossless-coding first coefficients among coefficients of a discrete layer and one or more fine granular scalability (FGS) layers, the variable length coding method includes determining a proportion of zeros included in a predetermined unit region to which the first coefficients belong, selecting one of a plurality of grouping units depending on whether or not the proportion exceeds a predetermined threshold, grouping absolute values of the first coefficients using the selected grouping unit, and transforming the grouped absolute values into a code word mapped thereto by referring to a VLC table corresponding to the selected group unit.

    摘要翻译: 提供了一种用于在基于多层的编解码系统中增强熵编码性能的方法和装置。 在可变长度编码方法中,对离散层和一个或多个细粒度可伸缩性(FGS)层的系数中的第一系数进行无损编码,所述可变长度编码方法包括确定包括在预定单位区域中的零比例, 第一系数属于,根据比例是否超过预定阈值来选择多个分组单元之一,使用所选择的分组单元分组第一系数的绝对值,并将分组的绝对值转换成由 参考对应于所选择的组单元的VLC表。

    Method and apparatus for enhancing performance of entropy coding, video coding method and apparatus using the method
    18.
    发明申请
    Method and apparatus for enhancing performance of entropy coding, video coding method and apparatus using the method 失效
    用于增强熵编码性能的方法和装置,使用该方法的视频编码方法和装置

    公开(公告)号:US20070053426A1

    公开(公告)日:2007-03-08

    申请号:US11509579

    申请日:2006-08-25

    IPC分类号: H04B1/66

    摘要: An apparatus for enhancing the performance of entropy coding in a multilayer-based codec and an entropy coding method includes obtaining a distribution of a second coefficient included in an area of a base layer corresponding to the block, selecting a lookup table which is appropriate to the obtained distribution among a plurality of lookup tables, and transforming the first coefficient into a value mapped to the selected lookup table.

    摘要翻译: 一种用于增强基于多层的编解码器中的熵编码的性能的装置和熵编码方法,包括获得包括在与该块对应的基本层的区域中的第二系数的分布,选择适合于该块的查找表 在多个查找表中获得分布,并将第一系数变换成映射到所选择的查找表的值。

    Method and apparatus for encoding and decoding FGS layer using reconstructed data of lower layer
    19.
    发明申请
    Method and apparatus for encoding and decoding FGS layer using reconstructed data of lower layer 审中-公开
    使用下层重建数据对FGS层进行编码和解码的方法和装置

    公开(公告)号:US20070014351A1

    公开(公告)日:2007-01-18

    申请号:US11484645

    申请日:2006-07-12

    IPC分类号: H04N11/04 H04B1/66

    CPC分类号: H04N19/34 H04N19/61

    摘要: A method and apparatus for encoding and decoding a fine granularity scalable (FGS) layer using reconstructed data of a lower layer. The method includes encoding the FGS layer in a multilayer video signal includes reconstructing original data of the lower layer that corresponds to a low-pass frame represented by the FGS layer, obtaining a residual between original data of the enhancement layer and the reconstructed original data of the lower layer, and generating an FGS layer bitstream through the processes of quantizing the residual and performing an entropy coding of the quantized residual.

    摘要翻译: 一种使用下层的重建数据对精细粒度可伸缩(FGS)层进行编码和解码的方法和装置。 该方法包括在多层视频信号中对FGS层进行编码,包括重建与由FGS层表示的低通帧相对应的下层的原始数据,获得增强层的原始数据与重构的原始数据之间的残差 并且通过量化残差并执行量化残差的熵编码的处理来生成FGS层比特流。