Video encoding and decoding method and apparatus using weighted prediction
    61.
    发明授权
    Video encoding and decoding method and apparatus using weighted prediction 有权
    视频编码和解码方法及装置采用加权预测

    公开(公告)号:US08208557B2

    公开(公告)日:2012-06-26

    申请号:US12132637

    申请日:2008-06-04

    申请人: Tammy Lee Woo-jin Han

    发明人: Tammy Lee Woo-jin Han

    IPC分类号: H04N7/12

    摘要: Provided is a video encoding and decoding method and apparatus. The video encoding method includes selecting a plurality of reference blocks based on a plurality of motion vectors and setting weights assigned to the plurality of reference blocks independently for each of a plurality of regions of a current block in order to predict and encode the current block, thereby providing a new encoding mode allowing accurate prediction of the current block and thus improving the compression rate of video encoding.

    摘要翻译: 提供了一种视频编码和解码方法和装置。 视频编码方法包括:基于多个运动矢量选择多个参考块,并且为当前块的多个区域中的每个区域独立地分配给多个参考块的设置权重,以便预测和编码当前块, 从而提供新的编码模式,允许对当前块的精确预测,从而提高视频编码的压缩率。

    Method and apparatus for encoding and decoding image using modification of residual block
    63.
    发明授权
    Method and apparatus for encoding and decoding image using modification of residual block 有权
    使用修改残差块对图像进行编码和解码的方法和装置

    公开(公告)号:US08194989B2

    公开(公告)日:2012-06-05

    申请号:US12032056

    申请日:2008-02-15

    IPC分类号: G06K9/36

    摘要: Provided are a method and apparatus for encoding and decoding an image. In the encoding method, a residual block of a current block is transformed using a predicted block of the current block so as to increase the spatial correlation among residual values, and DCT is performed on the transformed residual block, thus improving the efficiency of transforming a block having a region that is difficult to precisely predict.

    摘要翻译: 提供了一种用于对图像进行编码和解码的方法和装置。 在编码方法中,使用当前块的预测块来变换当前块的残差块,以增加残差值之间的空间相关性,并且对变换的残差块执行DCT,从而提高变换效率 块具有难以精确预测的区域。

    Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer
    64.
    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:US08116578B2

    公开(公告)日:2012-02-14

    申请号:US13005990

    申请日:2011-01-13

    IPC分类号: G06K9/46

    摘要: A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are 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: 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来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 effectively compressing motion vectors in video coder based on multi-layer
    65.
    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:US07889793B2

    公开(公告)日:2011-02-15

    申请号:US11254051

    申请日:2005-10-20

    IPC分类号: H04N7/12 H04N11/02 H04N11/04

    摘要: A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are 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: 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来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。

    Video coding and decoding methods with hierarchical temporal filtering structure, and apparatus for the same
    66.
    发明授权
    Video coding and decoding methods with hierarchical temporal filtering structure, and apparatus for the same 有权
    具有分层时间滤波结构的视频编码和解码方法,以及相同的装置

    公开(公告)号:US07885327B2

    公开(公告)日:2011-02-08

    申请号:US11353130

    申请日:2006-02-14

    申请人: Woo-jin Han

    发明人: Woo-jin Han

    摘要: A method and apparatus for video coding and decoding with hierarchical temporal filtering structure are disclosed. A video encoding method in a temporal level having a hierarchical temporal filtering structure, includes generating prediction frames from two or more reference frames that temporally precede the current frame; generating a residual frame by subtracting the prediction frames from the current frame; and encoding and transmitting the residual frame.

    摘要翻译: 公开了一种具有分级时间滤波结构的视频编码和解码方法和装置。 一种具有分级时间滤波结构的时间级视频编码方法,包括:从时间上在当前帧之前的两个或更多个参考帧产生预测帧; 通过从当前帧减去预测帧来产生残差帧; 并编码和发送剩余帧。

    Method and apparatus for encoding image and method and apparatus for decoding image using human visual characteristics
    67.
    发明授权
    Method and apparatus for encoding image and method and apparatus for decoding image using human visual characteristics 失效
    用于编码图像的方法和装置以及使用人类视觉特征对图像进行解码的方法和装置

    公开(公告)号:US07680346B2

    公开(公告)日:2010-03-16

    申请号:US11590784

    申请日:2006-11-01

    申请人: Woo-jin Han

    发明人: Woo-jin Han

    IPC分类号: G06K9/36

    摘要: An image encoding method and apparatus capable of improving image compression efficiency by using human psycho-visual characteristics are provided. In the image encoding method and apparatus, an image signal component of which amplitude is equal to or less than a just noticeable distortion (JND) that is a minimum limit of a visually noticeable image is not encoded according to image characteristics by using the masking effect of the human visual system (HVS), thereby improving an image compression rate without visible deterioration of image quality.

    摘要翻译: 提供了能够通过使用人心理视觉特性来提高图像压缩效率的图像编码方法和装置。 在图像编码方法和装置中,其幅度等于或小于作为视觉上可见图像的最小限度的正常可见失真(JND)的图像信号分量不会根据图像特性通过使用掩蔽效应 的人视觉系统(HVS),从而提高图像压缩率而不会使图像质量下降。

    VIDEO ENCODING AND DECODING METHOD AND APPARATUS
    69.
    发明申请
    VIDEO ENCODING AND DECODING METHOD AND APPARATUS 审中-公开
    视频编码和解码方法和设备

    公开(公告)号:US20080240246A1

    公开(公告)日:2008-10-02

    申请号:US12027410

    申请日:2008-02-07

    IPC分类号: H04N7/12

    摘要: Provided are a video encoding and decoding method and apparatus, in which a current block is divided into partitions based on an edge in the current block, and motion estimation is performed on the divided partitions. Video encoding efficiency can be improved by encoding partitions that are obtained by dividing the current block along a predetermined line passing through pixels belonging to an edge around the current block from among neighboring pixels around the current block.

    摘要翻译: 提供了一种视频编码和解码方法和装置,其中当前块基于当前块中的边缘被划分成分区,并且对划分的分区执行运动估计。 可以通过对通过当前块周围的相邻像素中沿着属于当前块周围的边缘的像素的预定线分割当前块而获得的分区来提高视频编码效率。

    METHOD OF AND APPARATUS FOR VIDEO ENCODING AND DECODING BASED ON MOTION ESTIMATION
    70.
    发明申请
    METHOD OF AND APPARATUS FOR VIDEO ENCODING AND DECODING BASED ON MOTION ESTIMATION 有权
    基于运动估计的视频编码和解码的方法和装置

    公开(公告)号:US20080107181A1

    公开(公告)日:2008-05-08

    申请号:US11936128

    申请日:2007-11-07

    IPC分类号: H04N7/26

    摘要: Provided is a method of and apparatus for video encoding and decoding based on motion estimation. The method includes generating a motion vector by searching a reference picture using pixels of a current block, generating a prediction motion vector that is a prediction value of the motion vector by searching the reference picture using previously encoded pixels located adjacent to the current block, and encoding the current block based on the motion vector and the prediction motion vector. By accurately predicting the motion vector of the current block, the number of bits required for encoding the motion vector can be reduced, thereby improving the compression rate of video data.

    摘要翻译: 提供了一种基于运动估计的用于视频编码和解码的方法和装置。 该方法包括通过使用当前块的像素搜索参考图像来生成运动矢量,通过使用与当前块相邻的先前编码的像素搜索参考图像来生成作为运动矢量的预测值的预测运动矢量,以及 基于运动矢量和预测运动矢量对当前块进行编码。 通过精确地预测当前块的运动矢量,可以减少编码运动矢量所需的位数,从而提高视频数据的压缩率。