Method for enhancing performance of residual prediction and video encoder and decoder using the same
    63.
    发明申请
    Method for enhancing performance of residual prediction and video encoder and decoder using the same 审中-公开
    用于增强残差预测性能的方法及使用其的视频编码器和解码器

    公开(公告)号:US20070047644A1

    公开(公告)日:2007-03-01

    申请号:US11508951

    申请日:2006-08-24

    IPC分类号: H04B1/66 H04N11/04

    摘要: A method and apparatus for enhancing the performance of residual prediction in a multi-layered video codec are provided. A residual prediction method includes calculating a first residual signal for a current layer block; calculating a second residual signal for a lower layer block corresponding to the current layer block; performing scaling by multiplying the second residual signal by a scaling factor; and calculating a difference between the first residual signal and the scaled second residual signal.

    摘要翻译: 提供了一种用于增强多层视频编解码器中的残差预测性能的方法和装置。 残差预测方法包括:计算当前层块的第一残差信号; 计算对应于当前层块的下层块的第二残差信号; 通过将所述第二残差信号乘以缩放因子来执行缩放; 以及计算所述第一残差信号和所述缩放的第二残差信号之间的差。

    Image encoding and decoding method and apparatus using motion compensation filtering
    65.
    发明授权
    Image encoding and decoding method and apparatus using motion compensation filtering 有权
    使用运动补偿滤波的图像编码和解码方法和装置

    公开(公告)号:US08045813B2

    公开(公告)日:2011-10-25

    申请号:US11958493

    申请日:2007-12-18

    IPC分类号: G06K9/36 G06K9/40 G06K9/46

    CPC分类号: H04N19/82

    摘要: Provided are an image encoding method and apparatus for encoding image data, in which compression efficiency is further improved by filtering motion-compensated image data, thereby reducing errors with respect to original image data, and an image decoding method and apparatus for decoding encoded image data. A filter is generated using previously decoded surrounding pixels of a current frame and surrounding pixels of a reference frame, and prediction data is then filtered using the generated filter. Therefore, it is possible to decrease a size of residual data to be encoded.

    摘要翻译: 提供了一种用于对图像数据进行编码的图像编码方法和装置,其中通过对运动补偿图像数据进行滤波来进一步提高压缩效率,从而减少关于原始图像数据的误差,以及用于对编码图像数据进行解码的图像解码方法和装置 。 使用先前解码的当前帧的周围像素和参考帧的周围像素来生成滤波器,然后使用所生成的滤波器对预测数据进行滤波。 因此,可以减少要编码的残留数据的大小。

    Motion vector compression method, video encoder, and video decoder using the method
    67.
    发明申请
    Motion vector compression method, video encoder, and video decoder using the method 审中-公开
    运动矢量压缩方法,视频编码器和视频解码器采用该方法

    公开(公告)号:US20070160143A1

    公开(公告)日:2007-07-12

    申请号:US11646264

    申请日:2006-12-28

    申请人: Kyo-hyuk Lee

    发明人: Kyo-hyuk Lee

    IPC分类号: H04N11/04 H04N11/02

    摘要: Provided are a method and apparatus for increasing the compression efficiency of a motion vector by efficiently predicting a motion vector of a frame that is located in a current temporal level of multiple temporal levels using a motion vector of a frame that is located in a next temporal level. The method includes selecting a second frame that exists in a low temporal level of a first frame and is nearest to the first frame, where the first frame exists in a current temporal level of the multiple temporal levels; generating a prediction motion vector for the first frame from a motion vector of the second frame; and subtracting the generated prediction motion vector from the motion vector of the first frame.

    摘要翻译: 提供了一种用于通过使用位于下一时间的帧的运动矢量来有效地预测位于多个时间级别的当前时间水平的帧的运动矢量来增加运动矢量的压缩效率的方法和装置 水平。 该方法包括选择存在于第一帧的低时间级并且最接近第一帧的第二帧,其中第一帧存在于多个时间级别的当前时间级别中; 从第二帧的运动矢量生成第一帧的预测运动矢量; 以及从所述第一帧的运动矢量中减去所生成的预测运动矢量。