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    • 11. 发明申请
    • METHOD AND APPARATUS FOR MOTION VECTOR ENCODING/DECODING USING SPATIAL DIVISION, AND METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING USING SAME
    • 使用空间分割的运动矢量编码/解码的方法和装置,以及使用其进行图像编码/解码的方法和装置
    • WO2011052897A3
    • 2011-09-09
    • PCT/KR2010006738
    • 2010-10-01
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONCHOE YOONSIKCHOI YUNGHOKIM YONGGOO
    • KIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONCHOE YOONSIKCHOI YUNGHOKIM YONGGOO
    • H04N7/32H04N7/24
    • H04N19/567H04N19/52
    • The present invention relates to a method and apparatus for motion vector encoding/decoding using spatial division, and to a method and apparatus for image encoding/decoding using same. The present invention provides a motion vector encoding method comprising: collecting predictor motion vector candidates of the current block into a plurality of groups; selecting, as a representative predictor motion vector, one predictor motion vector candidate from among the predictor motion vector candidates in each group, such that representative predictor motion vectors for respective groups can be selected; selecting, as a predictor motion vector, one representative predictor motion vector from among the representative predictor motion vectors of the groups; and encoding a differential vector which is a difference between the current motion vector and the selected predictor motion vector of the current block. According to the present invention, an increase in bit rate, caused by encoding side information for indicating which predictor motion vector is selected, can be suppressed while reducing the size of the differential vector to be encoded, thus improving motion vector encoding efficiency and ultimately improving image compression efficiency.
    • 本发明涉及使用空间划分的运动矢量编码/解码的方法和装置,以及涉及使用其进行图像编码/解码的方法和装置。 本发明提供了一种运动矢量编码方法,包括:将当前块的预测器运动矢量候选收集到多个组中; 从每组中的预测器运动矢量候选中选择一个预测器运动矢量作为代表预测器运动矢量,使得可以选择各组的代表性预测器运动矢量; 从所述组的代表性预测器运动矢量中选择一个代表性预测器运动矢量作为预测器运动矢量; 以及编码作为当前块的当前运动矢量和所选择的预测器运动矢量之间的差的差分矢量。 根据本发明,可以抑制由编码侧信息引起的用于指示哪个预测器运动矢量被选择的比特率的增加,同时减小要编码的差分矢量的大小,从而提高运动矢量编码效率并最终改善 图像压缩效率。
    • 12. 发明申请
    • METHOD AND APPARATUS FOR ENCODING/DECODING A MOTION VECTOR BY SELECTING A SET OF PREDICTED CANDIDATE MOTION VECTORS, AND METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING USING THE SAME
    • 通过选择一组预测候选运动向量对编码/解码运动向量进行编码/解码的方法和装置,以及使用该编码/解码进行图像编码/解码的方法和装置
    • WO2011062392A2
    • 2011-05-26
    • PCT/KR2010007839
    • 2010-11-08
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONKIM YONGGOOCHOE YOONSIKCHOI YUNGHO
    • KIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONKIM YONGGOOCHOE YOONSIKCHOI YUNGHO
    • H04N7/32H04N7/24
    • H04N19/52H04N19/13H04N19/176H04N19/70
    • The present invention relates to a method and apparatus for encoding/decoding a motion vector by selecting a set of predicted candidate motion vectors, and a method and apparatus for image encoding/decoding using the same. The method for encoding a motion vector according to the present invention comprises: selecting one set of predicted candidate motion vectors among plural sets of predicted candidate motion vectors by using information about motions of neighboring blocks of a current block; selecting one of the predicted candidate motion vectors in the selected set of predicted candidate motion vectors as a predicted motion vector; encoding a differential vector which represents the difference between the current motion vector as a motion vector of the current block and the predicted motion vector being selected; and encoding a predicted motion vector index that represents the predicted motion vector being selected. According to the present invention, as a motion vector is encoded by selecting an efficient set of predicted candidate motion vectors, the magnitude of a differential vector to be encoded can be reduced without necessarily encoding additional information to indicate which set of predicted candidate motion vectors has been selected. In result, the compression efficiency of a motion vector and further the compression efficiency of an image can be improved.
    • 本发明涉及一种通过选择一组预测候选运动矢量来编码/解码运动矢量的方法和设备,以及使用该方法和设备进行图像编码/解码的方法和设备。 根据本发明的用于编码运动矢量的方法包括:通过使用关于当前块的相邻块的运动的信息,在多组预测候选运动矢量中选择一组预测候选运动矢量; 选择所选择的一组预测候选运动矢量中的一个预测候选运动矢量作为预测运动矢量; 编码表示作为当前块的运动矢量的当前运动矢量与被选择的预测运动矢量之间的差值的差分矢量; 并且编码表示被选择的预测运动矢量的预测运动矢量索引。 根据本发明,由于通过选择有效的一组预测候选运动矢量来编码运动矢量,所以可以减小待编码的差分矢量的大小,而不必编码附加信息以指示哪组预测候选运动矢量具有 已被选中。 结果,可以提高运动矢量的压缩效率并进一步提高图像的压缩效率。
    • 16. 发明申请
    • APPARATUS AND METHOD FOR ENCODING IMAGES, AND APPARATUS AND METHOD FOR DECODING IMAGES
    • 用于编码图像的装置和方法,以及用于解码图像的装置和方法
    • WO2011105849A3
    • 2012-01-12
    • PCT/KR2011001329
    • 2011-02-25
    • SK TELECOM CO LTDLIM JEONGYEONKIM SUNYEONLEE GYUMINCHOI JAEHOONHAN JONGKILEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOYOO YOUNGJOE
    • LIM JEONGYEONKIM SUNYEONLEE GYUMINCHOI JAEHOONHAN JONGKILEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOYOO YOUNGJOE
    • H04N7/32H04N7/34
    • H04N19/00278G06K9/36H04N19/176H04N19/50H04N19/51H04N19/593
    • Disclosed are an apparatus and method for encoding images, and an apparatus and method for decoding images. The image-encoding apparatus according to one embodiment of the present invention comprises: a target block dividing unit which divides a target block of an input image to be encoded into a plurality of sub-blocks in accordance with the positions of pixels; a key block encoding unit which selects a random key block, the size of which is larger than that of at least one pixel, from among the plurality of sub-blocks divided by the target block dividing unit, and performs intra-prediction or inter-prediction on the selected key block; and a non-key block encoding unit which designates the rest of the divided sub-blocks, except for the selected key block, as a non-key block, and performs intra-prediction on the designated non-key block using values of peripheral pixels of the key block decoded on the basis of the key block encoding unit, and values of peripheral pixels of the current block. According to the present invention, spatial redundancy in a block can be efficiently removed, even when the size of a basic block for encoding increases in a high-resolution image-encoding process.
    • 公开了一种用于编码图像的装置和方法,以及用于对图像进行解码的装置和方法。 根据本发明的一个实施例的图像编码装置包括:目标块划分单元,其根据像素的位置将要编码的输入图像的目标块划分为多个子块; 键区块编码单元,从由所述目标块分割单元划分的所述多个子块中选择其尺寸大于至少一个像素的随机密钥块,并且执行帧内预测或帧间预测, 对所选关键块的预测; 以及非密钥块编码单元,其将除了所选择的密钥块之外的其余分割子块指定为非密钥块,并且使用周边像素的值对所指定的非密钥块执行帧内预测 基于密钥块编码单元解码的密钥块和当前块的周边像素的值。 根据本发明,即使当用于编码的基本块的大小在高分辨率图像编码处理中增加时,也可以有效地去除块中的空间冗余。
    • 19. 发明申请
    • VIDEO ENCODING DEVICE AND ENCODING METHOD THEREOF, VIDEO DECODING DEVICE AND DECODING METHOD THEREOF, AND DIRECTIONAL INTRA-PREDICTION METHOD TO BE USED THERETO
    • 视频编码设备及其编码方法,视频解码设备及其解码方法,以及使用的方向预测方法
    • WO2011068331A2
    • 2011-06-09
    • PCT/KR2010008387
    • 2010-11-25
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONJEONG JECHANG
    • KIM SUNYEONLIM JEONGYEONLEE GYUMINCHOI JAEHOONJEONG JECHANG
    • H04N7/24H04N7/32
    • H04N19/11H04N19/593
    • The present invention relates to a video encoding device and an encoding method thereof, a video decoding device and a decoding method thereof, and a directional intra-prediction method to be used thereto. The video encoding device according to embodiments of the present invention comprises: a main mode search unit for searching a main mode for a present block of directional intra prediction modes; a sub mode search unit for searching a sub mode in which a direction of the main mode searched through the main mode search unit is tilted in a predetermined offset in clockwise and counterclockwise directions; a prediction block generation unit for generating a prediction block for the present block from peripheral blocks of the present block on the basis of the main mode searched through the main mode search unit and the sub mode searched through the sub mode search unit; a differentiator for calculating a difference between the present block and the prediction block; and an encoding unit for encoding the difference calculated through the differentiator. The present invention can enhance the accuracy and efficiency of the intra prediction and can minimize an increase of overhead in the video encoding.
    • 视频编码装置及其编码方法技术领域本发明涉及一种视频编码装置及其编码方法,其视频解码装置及其解码方法以及其中使用的定向帧内预测方法。 根据本发明的实施例的视频编码装置包括:主模式搜索单元,用于搜索主模式用于当前块的定向帧内预测模式; 子模式搜索单元,用于搜索通过主模式搜索单元搜索的主模式的方向以顺时针和逆时针方向倾斜预定偏移的子模式; 预测块生成单元,其基于通过主模式搜索单元搜索的主模式和通过子模式搜索单元搜索的子模式,从当前块的周边块生成用于当前块的预测块; 用于计算当前块和预测块之间的差的微分器; 以及编码单元,用于对通过微分器计算的差进行编码。 本发明可以提高帧内预测的准确性和效率,并且可以最小化视频编码中的开销增加。