Interframe wavelet video coding method
    51.
    发明申请
    Interframe wavelet video coding method 有权
    帧间小波视频编码方法

    公开(公告)号:US20050013371A1

    公开(公告)日:2005-01-20

    申请号:US10892447

    申请日:2004-07-16

    IPC分类号: H04N7/26 H04N7/12

    摘要: An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.

    摘要翻译: 提供了将平均时间距离(ATD)最小化的帧间小波视频编码(IWVC)方法。 IWVC方法包括:接收一组帧,并将该组帧分解为第一前向和后向方向上的帧之间的差分帧和第一平均帧,小波分解第一差分帧和 第一平均帧和由小波分解产生的量化系数以产生比特流。 IWVC方法提供了改进的视频编码性能。

    Interframe wavelet video coding method
    52.
    发明授权
    Interframe wavelet video coding method 有权
    帧间小波视频编码方法

    公开(公告)号:US07292635B2

    公开(公告)日:2007-11-06

    申请号:US10892447

    申请日:2004-07-16

    IPC分类号: H04B1/66

    摘要: An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.

    摘要翻译: 提供了将平均时间距离(ATD)最小化的帧间小波视频编码(IWVC)方法。 IWVC方法包括:接收一组帧,并将该组帧分解为第一前向和后向方向上的帧之间的差分帧和第一平均帧,小波分解第一差分帧和 第一平均帧和由小波分解产生的量化系数以产生比特流。 IWVC方法提供了改进的视频编码性能。

    Scalable video coding and decoding methods, and scalable video encoder and decoder
    53.
    发明申请
    Scalable video coding and decoding methods, and scalable video encoder and decoder 审中-公开
    可扩展的视频编码和解码方法,以及可扩展的视频编码器和解码器

    公开(公告)号:US20050047509A1

    公开(公告)日:2005-03-03

    申请号:US10925013

    申请日:2004-08-25

    IPC分类号: H04N7/32 H04N7/12 H04N7/26

    摘要: Scalable video coding and decoding methods, a scalable video encoder, and a scalable video decoder. The scalable video coding method includes receiving a GOP, performing temporal filtering and spatial transformation thereon, quantizing and generating a bitstream. The scalable video encoder for performing the scalable video coding method includes a weight determination block which determines a weight for scaling. The scalable video decoding method includes dequantizing the coded image information obtained from a received bitstream, performing descaling, inverse spatial transformation, and inverse temporal filtering on the scaled transform coefficients, thereby recovering video frames. The scalable video decoder for performing the scalable video decoding method includes an inverse weighting block. The standard deviation of Peak Signal to Noise Ratios (PSNRs) of frames included in a group of pictures (GOP) is reduced so that video coding performance can be increased.

    摘要翻译: 可扩展视频编码和解码方法,可分级视频编码器和可伸缩视频解码器。 可分级视频编码方法包括接收GOP,对其进行时间滤波和空间变换,量化和生成比特流。 用于执行可伸缩视频编码方法的可分级视频编码器包括确定缩放权重的权重确定块。 可分级视频解码方法包括对从接收到的比特流获得的编码图像信息进行去量化,对经缩放的变换系数执行除鳞,逆空间变换和逆时间滤波,从而恢复视频帧。 用于执行可分级视频解码方法的可分级视频解码器包括反向加权块。 降低包括在一组图像(GOP)中的帧的峰值信号与噪声比(PSNR)的标准偏差,从而可以增加视频编码性能。

    Video encoding and decoding methods and video encoder and decoder
    54.
    发明申请
    Video encoding and decoding methods and video encoder and decoder 审中-公开
    视频编解码方式及视频编解码器

    公开(公告)号:US20060013309A1

    公开(公告)日:2006-01-19

    申请号:US11181803

    申请日:2005-07-15

    申请人: Ho-jin Ha Woo-jin Han

    发明人: Ho-jin Ha Woo-jin Han

    摘要: Video coding and decoding methods capable of providing motion scalability and video encoder and decoder are provided. The video coding method includes estimating a base layer motion vector and an enhancement layer motion vector for each block in a video frame, removing temporal redundancies in the video frame using the enhancement layer motion vectors, spatially transforming the video frame in which the temporal redundancies have been removed and quantizing the spatially transformed video frame to obtain texture information, selecting one of the estimated base layer motion vector and the estimated enhancement layer motion vector for each block, and generating a bitstream containing the motion vector selected for each block and the texture information.

    摘要翻译: 提供了能够提供运动可扩展性的视频编码和解码方法以及视频编码器和解码器。 视频编码方法包括估计视频帧中每个块的基本层运动矢量和增强层运动矢量,使用增强层运动矢量消除视频帧中的时间冗余,对时间冗余具有的视频帧进行空间变换 去除和量化空间变换的视频帧以获得纹理信息,为每个块选择估计的基本层运动矢量和估计的增强层运动矢量中的一个,并且生成包含为每个块选择的运动矢量和纹理信息的比特流 。

    Method for motion estimation of video frame and video encoder using the method
    55.
    发明申请
    Method for motion estimation of video frame and video encoder using the method 审中-公开
    使用该方法的视频帧和视频编码器的运动估计方法

    公开(公告)号:US20050232499A1

    公开(公告)日:2005-10-20

    申请号:US11103467

    申请日:2005-04-12

    申请人: Ho-jin Ha Woo-jin Han

    发明人: Ho-jin Ha Woo-jin Han

    IPC分类号: G06K9/36 G06T7/20

    摘要: Provided are a method for motion estimation of a video frame and a video encoder using the method. The method includes providing a low-resolution frame by down-sampling a video frame to be motion estimated, estimating motion vectors for blocks of the low-resolution frame, and creating initial values used to estimate motion vectors for blocks of a high resolution frame by up-sampling the blocks of the low-resolution frame.

    摘要翻译: 提供了一种使用该方法的视频帧和视频编码器的运动估计的方法。 该方法包括:通过对运动估计的视频帧进行下采样来提供低分辨率帧,估计低分辨率帧的块的运动矢量,以及创建用于估计高分辨率帧块的运动矢量的初始值, 对低分辨率帧的块进行上采样。

    Method and apparatus for encoding and decoding an image based on plurality of reference pictures
    60.
    发明授权
    Method and apparatus for encoding and decoding an image based on plurality of reference pictures 有权
    基于多个参考图像对图像进行编码和解码的方法和装置

    公开(公告)号:US08731055B2

    公开(公告)日:2014-05-20

    申请号:US12395977

    申请日:2009-03-02

    IPC分类号: H04N7/12 H04N11/02 H04N7/26

    摘要: A method and apparatus for encoding and decoding an image using a plurality of reference pictures. In an exemplary embodiment, the method of encoding an image comprises: generating information about transforms between a first picture and a second picture; generating a reference picture by transforming the second picture based on the generated information about transforms; predicting a current block of a current picture based on at least one of the reference picture and the first picture; and encoding the current block based on the predicting. Therefore, prediction encoding based on more accurate prediction is possible, thereby increasing a compression ratio of image encoding.

    摘要翻译: 一种使用多个参考图像对图像进行编码和解码的方法和装置。 在示例性实施例中,编码图像的方法包括:产生关于第一图像和第二图像之间的变换的信息; 通过基于生成的关于变换的信息来变换第二画面来生成参考画面; 基于所述参考图像和所述第一图像中的至少一个来预测当前图像的当前块; 并根据预测编码当前块。 因此,可以进行基于更精确的预测的预测编码,从而增加图像编码的压缩率。