Video coding and decoding method using weighted prediction and apparatus for the same
    41.
    发明授权
    Video coding and decoding method using weighted prediction and apparatus for the same 有权
    视频编码和解码方法采用加权预测和装置相同

    公开(公告)号:US08396123B2

    公开(公告)日:2013-03-12

    申请号:US13183049

    申请日:2011-07-14

    IPC分类号: H04N7/12

    摘要: A video coding and decoding method using a weighted prediction and an apparatus for the same are provided. The video coding method includes generating a predicted image for a present block; generating a weighted prediction factor which is a scaling factor of the predicted image that minimizes the difference between the present block and the predicted image; generating a weighted prediction image by multiplying the predicted image by the weighted prediction factor; and coding a residual signal generated by subtracting the weighted prediction image from the present block.

    摘要翻译: 提供了使用加权预测的视频编码和解码方法及其装置。 视频编码方法包括生成当前块的预测图像; 产生加权预测因子,其是使所述当前块与所述预测图像之间的差最小化的所述预测图像的缩放因子; 通过将预测图像乘以加权预测因子来生成加权预测图像; 以及对从当前块中减去加权预测图像而产生的残差信号进行编码。

    Method and apparatus for encoding and decoding based on intra prediction
    42.
    发明授权
    Method and apparatus for encoding and decoding based on intra prediction 有权
    基于帧内预测的编码和解码方法和装置

    公开(公告)号:US08374243B2

    公开(公告)日:2013-02-12

    申请号:US12016554

    申请日:2008-01-18

    IPC分类号: H04N7/12

    摘要: Methods and apparatuses for encoding and decoding based on intra prediction. The method of encoding an image based on intra prediction comprises dividing a current block into a plurality of sub blocks so that a plurality of unit blocks adjacent to each other are included in one of the sub blocks based on an intra prediction direction of each of the unit blocks included in the current block, and performing intra prediction encoding on each of the sub blocks so that only information about one intra prediction direction is encoded in each of the sub blocks.

    摘要翻译: 基于帧内预测的编码和解码方法和装置。 基于帧内预测对图像进行编码的方法包括将当前块划分为多个子块,使得相邻的多个单位块基于每个子块的帧内预测方向包括在子块之一中 包括在当前块中的单元块,并且对每个子块执行帧内预测编码,使得仅在每个子块中编码关于一个帧内预测方向的信息。

    METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING A MOTION VECTOR OF A PREVIOUS BLOCK AS A MOTION VECTOR FOR THE CURRENT BLOCK
    43.
    发明申请
    METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING A MOTION VECTOR OF A PREVIOUS BLOCK AS A MOTION VECTOR FOR THE CURRENT BLOCK 有权
    使用先前块的运动矢量作为电流块的运动矢量来编码/解码图像的方法和装置

    公开(公告)号:US20120294363A1

    公开(公告)日:2012-11-22

    申请号:US13574110

    申请日:2011-01-19

    申请人: Tammy Lee Woo-jin Han

    发明人: Tammy Lee Woo-jin Han

    IPC分类号: H04N7/32

    摘要: An encoding method and apparatus and a decoding method and apparatus for determining a motion vector of a current block based on a motion vector of at least one previously-encoded or previously-decoded block are provided. The decoding method includes: decoding information regarding a prediction direction from among a first direction, a second direction, and bi-directions, and information regarding pixel values of the current block; determining the prediction direction in which the current block is to be predicted, based on the decoded information regarding the prediction direction, and determining a motion vector for predicting the current block in the determined prediction direction; and restoring the current block, based on the determined motion vector and the decoded information regarding the pixel values, wherein the first direction is a direction from a current picture to a previous picture, and the second direction is a direction from the current picture to a subsequent picture.

    摘要翻译: 提供了一种用于基于至少一个先前编码或先前解码的块的运动矢量来确定当前块的运动矢量的编码方法和装置以及解码方法和装置。 解码方法包括:从第一方向,第二方向和双向解码关于预测方向的信息,以及关于当前块的像素值的信息; 基于关于预测方向的解码信息,确定当前块要预测的预测方向,并且确定用于在确定的预测方向上预测当前块的运动矢量; 并且基于所确定的运动矢量和关于像素值的解码信息来恢复当前块,其中第一方向是从当前图像到先前图像的方向,并且第二方向是从当前图像到 后续图片。

    Method and apparatus for encoding/decoding motion vector
    44.
    发明授权
    Method and apparatus for encoding/decoding motion vector 有权
    用于编码/解码运动矢量的方法和装置

    公开(公告)号:US08311118B2

    公开(公告)日:2012-11-13

    申请号:US13403476

    申请日:2012-02-23

    IPC分类号: H04N7/12

    摘要: Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.

    摘要翻译: 提供了用于对运动矢量进行编码和解码的方法和装置。 对运动矢量进行编码的方法包括:作为对当前块的运动矢量预测器的信息进行编码的模式,选择对从至少一个运动矢量预测器中的运动矢量预测器进行编码的信息进行编码的第一模式, 第二模式,其中编码基于与当前块相邻的先前编码区域中包括的块或像素的运动矢量预测器的生成的信息; 根据所选择的模式确定当前块的运动矢量预测器,并对关于当前块的运动矢量预测器的信息进行编码; 并且对当前块的运动矢量与当前块的运动矢量预测器之间的差矢量进行编码。

    Method and apparatus for encoding and decoding image
    45.
    发明授权
    Method and apparatus for encoding and decoding image 有权
    图像编码和解码的方法和装置

    公开(公告)号:US08306115B2

    公开(公告)日:2012-11-06

    申请号:US12396582

    申请日:2009-03-03

    IPC分类号: H04B1/66 H04N7/12

    摘要: Provided are a method and apparatus for encoding an image capable of improving compression efficiency of the image by compensating for a loss due to quantization of a residual block in the frequency domain, and a method and apparatus for decoding the image. The method of encoding an image includes: generating a prediction macro block for a current macro block; generating a first residual block which is a difference between the prediction macro block and the current macro block; generating a compensation residual block by compensating for a quantization loss of the first residual block in the frequency domain; compensating for the prediction macro block by adding the compensation residual block and the prediction macro block.

    摘要翻译: 提供了一种通过补偿由于频域中的残差块的量化造成的损失而能够提高图像的压缩效率的图像的方法和装置,以及用于对图像进行解码的方法和装置。 编码图像的方法包括:产生用于当前宏块的预测宏块; 产生作为预测宏块与当前宏块之间的差的第一残差块; 通过补偿频域中的第一残差块的量化损耗来产生补偿残差块; 通过添加补偿残差块和预测宏块来补偿预测宏块。

    Multilayer-based video encoding method and apparatus thereof
    46.
    发明授权
    Multilayer-based video encoding method and apparatus thereof 有权
    多层视频编码方法及其装置

    公开(公告)号:US08155181B2

    公开(公告)日:2012-04-10

    申请号:US11709124

    申请日:2007-02-22

    IPC分类号: H04N11/02

    摘要: A method and apparatus are provided for reducing the inter-layer redundancy of a difference signal obtained from an intra-prediction when coding a video using multi-layer structure supporting intra-prediction. The method includes obtaining a first difference block between a block of a first layer and a first prediction block which is used to perform an intra-prediction on the block, obtaining a second difference block between a block of a second layer corresponding to the block of the first layer and a second prediction block which is used to perform an intra-prediction on the block, and obtaining a final difference block between the first difference block and the second difference block.

    摘要翻译: 提供一种方法和装置,用于在使用支持帧内预测的多层结构对视频进行编码时,减少从帧内预测中获得的差分信号的层间冗余。 该方法包括获得第一层的块和用于对块执行帧内预测的第一预测块之间的第一差分块,获得与块的块对应的第二层的块之间的第二差分块 第一层和第二预测块,用于对块执行帧内预测,​​并获得第一差分块和第二差分块之间的最终差分块。

    Method for compressing/decompressing motion vectors of unsynchronized picture and apparatus using the same
    47.
    发明授权
    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:US08085847B2

    公开(公告)日:2011-12-27

    申请号:US11393755

    申请日:2006-03-31

    IPC分类号: H04N7/12

    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 predecoding and decoding bitstream including base layer
    48.
    发明授权
    Method and apparatus for predecoding and decoding bitstream including base layer 有权
    用于对包括基本层的比特流进行预解码和解码的方法和装置

    公开(公告)号:US08031776B2

    公开(公告)日:2011-10-04

    申请号:US11180634

    申请日:2005-07-14

    申请人: Woo-jin Han

    发明人: Woo-jin Han

    IPC分类号: H04N7/12

    摘要: A method and apparatus for extracting a higher quality video stream for a given bit-rate by replacing a specific frame by a base layer frame at a predecoder are provided. A predecoding method performed by the predecoder includes selecting a mode by determining frames to be skipped according to a predetermined criterion among frames located at positions where the base layer exists, and extracting a portion of the bitstream according to the selected mode and extraction conditions.

    摘要翻译: 提供了一种用于通过在预解码器处由基本层帧替换特定帧来为给定比特率提取较高质量视频流的方法和装置。 由预解码器执行的预解码方法包括:通过根据位于基层存在的位置的帧中的预定标准来确定要跳过的帧来选择模式,并且根据所选择的模式和提取条件提取比特流的一部分。

    Method of encoding flag, method of decoding flag, and apparatus thereof
    50.
    发明授权
    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:US07840083B2

    公开(公告)日:2010-11-23

    申请号:US11599484

    申请日:2006-11-15

    IPC分类号: G06K9/36 G06K9/46 G06K9/00

    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 模式位,指示分割的位串中包括的所有比特是否为0,以及根据所设置的模式比特对分割的比特串进行熵编码。