METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO SIGNAL OF FGS LAYER BY REORDERING TRANSFORM COEFFICIENTS
    41.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO SIGNAL OF FGS LAYER BY REORDERING TRANSFORM COEFFICIENTS 审中-公开
    通过修改变换系数编码和解码FGS层的视频信号的方法和装置

    公开(公告)号:US20080013624A1

    公开(公告)日:2008-01-17

    申请号:US11777563

    申请日:2007-07-13

    申请人: Woo-jin HAN

    发明人: Woo-jin HAN

    IPC分类号: H04B1/66 H04N11/04

    CPC分类号: H04N19/34 H04N19/59 H04N19/61

    摘要: A method of encoding a video signal of an FGS layer by reordering transform coefficients includes classifying transform coefficients of blocks in a current layer to be encoded into significant coefficients and refinement coefficients, reordering the significant coefficients and the refinement coefficients according to the classifications, and coding the reordered significant coefficients and refinement coefficients.

    摘要翻译: 通过重新排序变换系数对FGS层的视频信号进行编码的方法包括将要编码的当前层中的块的变换系数分类为有效系数和细化系数,根据分类重新排序有效系数和细化系数,以及编码 重新排序的有效系数和细化系数。

    VIDEO ENCODING/DECODING METHOD AND APPARATUS IN TEMPORAL DIRECT MODE IN HIERARCHICAL STRUCTURE
    42.
    发明申请
    VIDEO ENCODING/DECODING METHOD AND APPARATUS IN TEMPORAL DIRECT MODE IN HIERARCHICAL STRUCTURE 审中-公开
    视频编码/解码方法和设备在分层结构中的时间直接模式

    公开(公告)号:US20120314769A1

    公开(公告)日:2012-12-13

    申请号:US13588396

    申请日:2012-08-17

    IPC分类号: H04N7/36

    CPC分类号: H04N19/31 H04N19/52 H04N19/61

    摘要: A video encoding/decoding method and apparatus in a temporal direct mode in a hierarchical structure. The video encoding method in the temporal direct mode in the hierarchical structure includes calculating a temporal position of a forward reference frame or a backward reference frame of a high-pass frame; searching for frames that exist at the temporal position and have motion vector information; if there is a plurality of frames searched for, selecting as a co-located frame a frame, among the plurality of frames, having a motion vector of which an interval is closest to a difference in interval between the forward reference frame and the backward reference frame of the high-pass frame, and extracting the motion vector of the selected frame; and encoding information on the selected frame so that the high-pass frame can use the extracted motion vector.

    摘要翻译: 在分层结构中的时间直接模式的视频编码/解码方法和装置。 分级结构中的时间直接模式中的视频编码方法包括计算高通帧的前向参考帧或后向参考帧的时间位置; 搜索存在于时间位置的帧并具有运动矢量信息; 如果存在搜索到的多个帧,则在多个帧中选择具有间隔最接近正向参考帧和后向参考之间的间隔差的运动矢量作为同位置帧的帧 帧,并提取所选择的帧的运动矢量; 并且对所选择的帧进行编码信息,使得高通帧可以使用所提取的运动矢量。

    METHOD AND APPARATUS FOR ENCODING VIDEO SIGNAL AND METHOD AND APPARATUS FOR DECODING VIDEO SIGNAL
    44.
    发明申请
    METHOD AND APPARATUS FOR ENCODING VIDEO SIGNAL AND METHOD AND APPARATUS FOR DECODING VIDEO SIGNAL 有权
    用于编码视频信号的方法和装置以及用于解码视频信号的方法和装置

    公开(公告)号:US20110280302A1

    公开(公告)日:2011-11-17

    申请号:US13108188

    申请日:2011-05-16

    IPC分类号: H04N7/30 H04N7/26

    摘要: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

    摘要翻译: 提供了一种用于对视频信号进行编码的方法和装置以及用于对视频信号进行解码的方法和装置。 视频信号的编码方法包括:考虑在视频信号的变换期间获得的中间值的最大位数和视频信号的最大位精度,确定视频信号的最佳缩放比特深度; 根据与确定的最佳缩放比特深度和视频信号的原始比特深度之间的差对应的本地移位值对视频信号进行缩放; 并转换缩放的视频信号。

    METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO
    45.
    发明申请
    METHOD AND APPARATUS FOR ENCODING VIDEO, AND METHOD AND APPARATUS FOR DECODING VIDEO 审中-公开
    用于编码视频的方法和装置,以及用于解码视频的方法和装置

    公开(公告)号:US20110134999A1

    公开(公告)日:2011-06-09

    申请号:US12963746

    申请日:2010-12-09

    IPC分类号: H04N7/50

    摘要: A method and apparatus for encoding a video, and a method and apparatus for decoding a video, for increasing image compression efficiency by spatially transforming, scaling and frequency-transforming residual image data. The method of encoding an image includes spatially transforming a residual block through performing wavelet transformation or downsampling on the residual block to have a size that is equal to or smaller than a maximum size of a transformation unit when the size of the residual block is larger than the maximum size of the transformation unit, and transforming the spatially transformed residual block to a frequency domain.

    摘要翻译: 用于对视频进行编码的方法和装置,以及用于对视频进行解码的方法和装置,用于通过空间变换,缩放和频率变换残差图像数据来提高图像压缩效率。 编码图像的方法包括:当残留块的大小大于等于或小于变换单元的最大大小时,通过对残差块执行小波变换或下采样来对残差块进行空间变换 变换单元的最大大小,以及将空间变换的残差块变换为频域。

    VIDEO CODING AND DECODING METHODS WITH HIERARCHICAL TEMPORAL FILTERING STRUCTURE, AND APPARATUS FOR THE SAME
    46.
    发明申请
    VIDEO CODING AND DECODING METHODS WITH HIERARCHICAL TEMPORAL FILTERING STRUCTURE, AND APPARATUS FOR THE SAME 失效
    具有分层时间滤波结构的视频编码和解码方法及其相关设备

    公开(公告)号:US20110096841A1

    公开(公告)日:2011-04-28

    申请号:US12983599

    申请日:2011-01-03

    申请人: Woo-jin HAN

    发明人: Woo-jin HAN

    IPC分类号: H04N7/32 H04N7/36

    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 SCALABLE VIDEO ENCODING AND DECODING
    47.
    发明申请
    METHOD AND APPARATUS FOR SCALABLE VIDEO ENCODING AND DECODING 审中-公开
    用于可扩展视频编码和解码的方法和装置

    公开(公告)号:US20100142615A1

    公开(公告)日:2010-06-10

    申请号:US12705384

    申请日:2010-02-12

    申请人: Woo-jin HAN

    发明人: Woo-jin HAN

    IPC分类号: H04N11/04 H04N11/02

    摘要: Disclosed is a scalable video coding algorithm. A method for video coding includes temporally filtering frames in the same sequence to a decoding sequence thereof to remove temporal redundancy, obtaining and quantizing transformation coefficients from frames whose temporal redundancy is removed, and generating bitstreams. A video encoder comprises a temporal transformation unit, a spatial transformation unit, a quantization unit and a bitstream generation unit to perform the method. A method for video decoding is basically reverse in sequence to the video coding. A video decoder extracts information necessary for video decoding by interpreting the received bitstream and decoding it. Thus, video streams may be generated by allowing a decoder to decode the generated bitstreams, while maintaining the temporal scalability on an encoder-side.

    摘要翻译: 公开了一种可扩展的视频编码算法。 一种用于视频编码的方法包括以与其解码序列相同的顺序对帧进行时间滤波,以去除时间冗余,从其时间冗余被去除的帧获得和量化变换系数,并生成比特流。 视频编码器包括时间变换单元,空间变换单元,量化单元和比特流生成单元,以执行该方法。 视频解码的方法基本上与视频编码相反。 视频解码器通过解释所接收的比特流并解码来提取视频解码所需的信息。 因此,可以通过允许解码器解码生成的比特流,同时保持编码器侧的时间可扩展性来生成视频流。

    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING MODIFICATION OF RESIDUAL BLOCK
    48.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING MODIFICATION OF RESIDUAL BLOCK 有权
    使用修改块编码和解码图像的方法和装置

    公开(公告)号:US20080247658A1

    公开(公告)日:2008-10-09

    申请号:US12032056

    申请日:2008-02-15

    IPC分类号: G06K9/46

    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 ENCODING AND DECODING BASED ON INTER PREDICTION
    49.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING BASED ON INTER PREDICTION 失效
    基于帧间预测的编码和解码的方法和装置

    公开(公告)号:US20080187044A1

    公开(公告)日:2008-08-07

    申请号:US12019747

    申请日:2008-01-25

    IPC分类号: H04N7/26

    摘要: A method and apparatus for encoding and decoding based on inter prediction are provided. In the encoding method, a current block is encoded by respectively performing intra prediction on the current block and a reference block in a reference picture which corresponds to the current block, and performing inter prediction on the current block based on the results of performing intra prediction. Accordingly, it is possible to reduce the size of data regarding the current block, which is generated as a result of performing inter prediction, thereby improving the compression rate of video data.

    摘要翻译: 提供了一种基于帧间预测的编码和解码方法和装置。 在编码方法中,通过对当前块和对应于当前块的参考图像中的参考块分别执行帧内预测和对当前块执行帧间预测来编码当前块,并且基于执行帧内预测的结果 。 因此,可以减少作为执行帧间预测的结果而生成的当前块的数据的大小,从而提高视频数据的压缩率。

    METHOD AND APPARATUS FOR TRANSFORMING AND INVERSE-TRANSFORMING IMAGE
    50.
    发明申请
    METHOD AND APPARATUS FOR TRANSFORMING AND INVERSE-TRANSFORMING IMAGE 有权
    用于变换和逆变换图像的方法和装置

    公开(公告)号:US20080049854A1

    公开(公告)日:2008-02-28

    申请号:US11844782

    申请日:2007-08-24

    IPC分类号: H04B1/69

    摘要: Provided are a method and apparatus for transforming an image, in which an input image is transformed into a frequency domain by selectively using a plurality of frequency transform algorithms according to a frequency characteristic of the input image. The method includes: selecting a frequency transform algorithm to be used for a current block from a plurality of frequency transform algorithms according to a result obtained by transforming frequencies of peripheral blocks adjacent to the current block; and transforming the current block into a frequency domain by using the selected frequency transform algorithm.

    摘要翻译: 提供了一种用于变换图像的方法和装置,其中通过根据输入图像的频率特性选择性地使用多个频率变换算法将输入图像变换为频域。 该方法包括:根据通过变换与当前块相邻的外围块的频率获得的结果,从多个频率变换算法中选择要用于当前块的频率变换算法; 并通过使用所选择的频率变换算法将当前块变换成频域。