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    • 3. 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。