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    • 31. 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。
    • 33. 发明申请
    • VIDEO ENCODING/DECODING APPARATUS AND METHOD
    • 视频编码/解码设备和方法
    • WO2011129672A2
    • 2011-10-20
    • PCT/KR2011002762
    • 2011-04-18
    • SK TELECOM CO LTDSONG JINHANLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIPARK HYOUNGMEELEE JUOCK
    • SONG JINHANLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOHAN JONGKIPARK HYOUNGMEELEE JUOCK
    • H04N7/24
    • H04N19/61
    • The present invention relates to a video encoding/decoding apparatus and method. The video encoding/decoding apparatus according to one embodiment of the present invention comprises: a video encoder that generates predicted sub-blocks by predicting sub-blocks into which a macro block is divided, generates residual sub-blocks by subtracting the sub-blocks and the predicted sub-blocks, generates quantized transform coefficients by transforming and quantizing the residual sub-blocks using a transformation scheme which is selected by the size of the sub-block, generates video data encoded by encoding the quantized transform coefficients, and selectively calculates and obtains an encoding cost when an encoding mode is determined for at least one of the block type, prediction mode, transformation type and motion vector for the divided sub-blocks; and a video decoder that restores information about the division type, motion and transformation type as well as the quantized transform coefficients, restores the residual sub-blocks by performing the inverse-quantization and inverse-transformation on the quantized transform coefficients following a transformation scheme which is identified by the transformation type information having been restored, generates predicted sub-blocks, on the basis of the motion information having been restored, by predicting sub-blocks which are identified by the division type information having been restored, and restores sub-blocks by subtracting the predicted sub-blocks and residual sub-blocks.
    • 本发明涉及视频编码/解码装置和方法。 根据本发明的一个实施例的视频编码/解码装置包括:视频编码器,通过预测划分出宏块的子块来产生预测子块,通过减去子块产生残余子块, 预测子块通过使用由子块的大小选择的变换方案来变换和量化残差子块来生成量化变换系数,生成通过对量化的变换系数进行编码而编码的视频数据,并选择性地计算和 当为分割子块的块类型,预测模式,变换类型和运动矢量中的至少一个确定编码模式时,获得编码成本; 以及视频解码器,其恢复关于分割类型,运动和变换类型以及量化变换系数的信息,通过对变换方案之后的量化变换系数执行逆量化和逆变换来恢复残留子块, 由已经恢复的变换类型信息识别,通过预测由已经被恢复的分割类型信息识别的子块,基于已经恢复的运动信息生成预测子块,并且恢复子块 通过减去预测的子块和残余子块。
    • 35. 发明申请
    • IMAGE ENCODING/DECODING APPARATUS AND METHOD USING MULTI-DIMENSIONAL INTEGER TRANSFORM
    • 图像编码/解码装置和使用多维整数变换的方法
    • WO2010151018A3
    • 2011-03-31
    • PCT/KR2010004015
    • 2010-06-22
    • SK TELECOM CO LTDKIM SUNYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOPARK MINCHEOLKIM DONGWON
    • KIM SUNYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOPARK MINCHEOLKIM DONGWON
    • H04N7/24
    • H04N19/61H04N19/122H04N19/147
    • The present invention relates to an image encoding/decoding apparatus and method using a multi-dimensional integer transform. The image encoding method of the present invention comprises: dividing a sub-block into rectangular block units and encoding the units stepwise so as to output a rectangular encoded bitstream for each sub-block, and encoding a sub-block into square block units so as to output a square encoded bitstream for each sub-block; and computing the encoding cost for a case where at least one rectangular encoded bitstream is included and the encoding cost for a case where no rectangular encoded bitstream is included and then, based on the costs, generating and outputting a bitstream for a macro block by using at least one of the square and rectangular encoded bitstream. According to the present invention, since a high-efficiency encoding scheme is selectively determined when encoding or decoding an image the prediction accuracy may be increased, and this in turn can improve the image encoding efficiency.
    • 本发明涉及使用多维整数变换的图像编码/解码装置和方法。 本发明的图像编码方法包括:将子块划分为矩形块单元,并逐步编码单元,以输出每个子块的矩形编码比特流,并将子块编码为方块单位,以便 输出每个子块的平方编码比特流; 以及在包括至少一个矩形编码比特流的情况下计算编码成本,并且对于不包括矩形编码比特流的情况下的编码成本,然后基于成本,通过使用生成并输出宏块的比特流 至少一个正方形和矩形编码比特流。 根据本发明,由于在对图像进行编码或解码时选择性地确定高效编码方案,所以可以提高预测精度,进而可以提高图像编码效率。