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    • 5. 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。