Method of assigning priority for controlling bit rate of bitstream, method of controlling bit rate of bitstream, video decoding method, and apparatus using the same
    31.
    发明授权
    Method of assigning priority for controlling bit rate of bitstream, method of controlling bit rate of bitstream, video decoding method, and apparatus using the same 有权
    分配用于控制比特流比特率的优先级的方法,控制比特流的比特率的方法,视频解码方法以及使用该比特率的装置

    公开(公告)号:US08406294B2

    公开(公告)日:2013-03-26

    申请号:US11708336

    申请日:2007-02-21

    IPC分类号: H04N7/12

    摘要: A method of assigning a priority for controlling a bit rate of a bitstream having a plurality of quality layers is provided. The method includes composing first quality layers for a reference picture, composing second quality layers for a current picture that is encoded with reference to the reference picture, and assigning a priority each of the first and second quality layers, wherein a low priority is assigned to a quality layer having a small influence on a video quality reduction of the current picture when the quality layer is truncated.

    摘要翻译: 提供了一种分配用于控制具有多个质量层的比特流的比特率的优先级的方法。 该方法包括:为参考图像组合第一质量层,为参照参考图像编码的当前图像构成第二质量层,以及分配第一和第二质量层的优先级,其中低优先级被分配给 质量层在质量层被截断时对当前图像的视频质量降低具有小的影响。

    Method of and apparatus for video encoding and decoding based on motion estimation
    32.
    发明授权
    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方法和装置

    公开(公告)号:US08275039B2

    公开(公告)日:2012-09-25

    申请号:US11936128

    申请日:2007-11-07

    IPC分类号: H04N7/12

    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。

    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING
    33.
    发明申请
    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING 有权
    视频编码和解码的方法和装置

    公开(公告)号:US20080240248A1

    公开(公告)日:2008-10-02

    申请号:US12031847

    申请日:2008-02-15

    IPC分类号: H04N7/26

    摘要: A method and apparatus for encoding a skip macroblock by dividing the skip macroblock into smaller skip sub blocks and using predictive motion vectors predicted from motion vectors of blocks adjacent to the skip sub blocks, and a method and apparatus for decoding the skip macroblock is provided. Accordingly, by adding predetermined binary information indicating whether the skip macroblock is divided to the skip macroblock that generally transmits only prediction mode information, division of the skip macroblock can be adaptively applied, or all skip macroblocks can be divided into sub-blocks to be processed, so that pixel values in the skip macroblock can be predicted by using motion vectors of spatially adjacent blocks. Therefore, prediction efficiency increases.

    摘要翻译: 提供一种通过将跳过宏块划分为更小的跳跃子块并使用从与跳过子块相邻的块的运动矢量预测的预测运动矢量来对跳过宏块进行编码的方法和装置,以及用于对跳过宏块进行解码的方法和装置。 因此,通过将表示跳过宏块是否被划分为通常只发送预测模式信息的跳跃宏块的预定二进制信息,可以自适应地应用跳过宏块的划分,或者所有跳过宏块可以被划分为要被处理的子块 ,使得可以通过使用空间相邻块的运动矢量来预测跳跃宏块中的像素值。 因此,预测效率提高。

    Method of encoding flag, method of decoding flag, and apparatus thereof
    34.
    发明申请
    Method of encoding flag, method of decoding flag, and apparatus thereof 有权
    编码标志的方法,标志的解码方法及其装置

    公开(公告)号:US20070160302A1

    公开(公告)日:2007-07-12

    申请号:US11599484

    申请日:2006-11-15

    IPC分类号: G06K9/46

    摘要: A method of encoding flags, a method of decoding flags and an apparatus thereof, in which flag encoding and decoding can be efficiently performed by using spatial correlation between various flags included a plurality of blocks are provided. The method includes collecting flag values respectively allocated to groups of the plurality of blocks according to spatial correlation of blocks to create a flag bit-string, dividing the flag bit-string into a plurality of divided bit-strings using a group size, setting a pattern bit indicating whether all bits included in the divided bit-strings are 0 or not, and performing entropy coding on the divided bit-strings according to the set pattern bit.

    摘要翻译: 提供一种编码标志的方法,一种解码标志的方法及其装置,其中可以通过使用包括多个块的各种标志之间的空间相关性来有效地执行标志编码和解码。 该方法包括根据块的空间相关性分别分配分配给多个块的组的标志值,以创建标志位串,使用组大小将标志位串划分成多个划分的位串,将 模式比特,指示分割的比特串中包含的所有比特是否为0,并根据所设置的模式比特对分割的比特串进行熵编码。

    Method and apparatus for motion prediction using inverse motion transform
    35.
    发明申请
    Method and apparatus for motion prediction using inverse motion transform 审中-公开
    使用逆运动变换的运动预测方法和装置

    公开(公告)号:US20070160136A1

    公开(公告)日:2007-07-12

    申请号:US11650519

    申请日:2007-01-08

    IPC分类号: H04B1/66 H04N11/02

    摘要: A method and apparatus for performing a motion prediction using an inverse motion transformation are provided. The method includes generating a second motion vector by inverse-transforming a first motion vector of a second block in a lower layer, the second block corresponding to a first block in a current layer; predicting a motion vector of the first block using the second motion vector; and encoding the first block using the predicted motion vector. The apparatus includes a motion vector inverse-transforming unit that generates a second motion vector by inverse-transforming a first motion vector of a second block in a lower layer corresponding to a first block in a current layer; a predicting unit that predicts a motion vector of the first block using the second motion vector; and an inter-prediction encoding unit that encodes the first block using the predicted motion vector.

    摘要翻译: 提供了一种使用逆运动变换进行运动预测的方法和装置。 该方法包括通过对下层中的第二块的第一运动矢量进行逆变换来生成第二运动矢量,第二块对应于当前层中的第一块; 使用所述第二运动矢量预测所述第一块的运动矢量; 以及使用预测的运动矢量对第一块进行编码。 该装置包括:运动矢量反变换单元,其通过对与当前层中的第一块对应的下层中的第二块的第一运动矢量进行逆变换来生成第二运动矢量; 预测单元,其使用所述第二运动矢量来预测所述第一块的运动矢量; 以及帧间预测编码单元,其使用所述预测运动矢量对所述第一块进行编码。

    Video encoding/decoding method and apparatus in temporal direct mode in hierarchical structure
    36.
    发明申请
    Video encoding/decoding method and apparatus in temporal direct mode in hierarchical structure 有权
    视频编码/解码方法和装置在时间直接模式下的分层结构

    公开(公告)号:US20070019730A1

    公开(公告)日:2007-01-25

    申请号:US11476080

    申请日:2006-06-28

    IPC分类号: H04N11/04 H04N11/02 H04B1/66

    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 for compressing/decompressing motion vectors of unsynchronized picture and apparatus using the same
    38.
    发明申请
    Method for compressing/decompressing motion vectors of unsynchronized picture and apparatus using the same 有权
    用于压缩/解压缩不同步图像的运动矢量和使用其的装置的方法

    公开(公告)号:US20060221418A1

    公开(公告)日:2006-10-05

    申请号:US11393755

    申请日:2006-03-31

    IPC分类号: H04N1/46

    摘要: A method and apparatus are provided for improving the compression efficiency of motion vectors of an unsynchronized picture by efficiently predicting the motion vectors using motion vectors of a lower layer. The method compresses motion vectors of an unsynchronized picture belonging to a current layer in a video encoder based on a multilayer having at least the current layer and a lower layer of the current layer. The method includes selecting a base picture for the unsynchronized picture, generating a predicted motion vector of the current layer from a motion vector of the base picture, subtracting the predicted motion vector from a motion vector of the unsynchronized picture, and encoding the result of subtraction.

    摘要翻译: 提供一种方法和装置,用于通过使用下层的运动矢量有效地预测运动矢量来提高非同步图像的运动矢量的压缩效率。 该方法基于至少具有当前层的当前层和下层的多层压缩视频编码器中属于当前层的不同步图像的运动矢量。 该方法包括:选择用于非同步图像的基本图像,从基本图像的运动矢量生成当前图层的预测运动矢量,从非同步图像的运动矢量中减去预测运动矢量,并对相减结果进行编码 。

    Method and apparatus for video encoding and decoding
    40.
    发明授权
    Method and apparatus for video encoding and decoding 有权
    用于视频编码和解码的方法和装置

    公开(公告)号:US08873633B2

    公开(公告)日:2014-10-28

    申请号:US12031847

    申请日:2008-02-15

    摘要: A method and apparatus for encoding a skip macroblock by dividing the skip macroblock into smaller skip sub blocks and using predictive motion vectors predicted from motion vectors of blocks adjacent to the skip sub blocks, and a method and apparatus for decoding the skip macroblock is provided. Accordingly, by adding predetermined binary information indicating whether the skip macroblock is divided to the skip macroblock that generally transmits only prediction mode information, division of the skip macroblock can be adaptively applied, or all skip macroblocks can be divided into sub-blocks to be processed, so that pixel values in the skip macroblock can be predicted by using motion vectors of spatially adjacent blocks. Therefore, prediction efficiency increases.

    摘要翻译: 提供一种通过将跳过宏块划分为更小的跳跃子块并使用从与跳过子块相邻的块的运动矢量预测的预测运动矢量来对跳过宏块进行编码的方法和装置,以及用于对跳过宏块进行解码的方法和装置。 因此,通过将表示跳过宏块是否被划分为通常只发送预测模式信息的跳跃宏块的预定二进制信息,可以自适应地应用跳过宏块的划分,或者所有跳过宏块可以被划分为要被处理的子块 ,使得可以通过使用空间相邻块的运动矢量来预测跳跃宏块中的像素值。 因此,预测效率提高。