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    • 2. 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。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGES USING ADAPTIVE MOTION VECTOR RESOLUTION
    • 使用自适应运动矢量分辨率编码/解码图像的方法和装置
    • WO2011021915A3
    • 2011-06-16
    • PCT/KR2010005572
    • 2010-08-23
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOLEE JUOCKKIM DONGWON
    • KIM SUNYEONLIM JEONGYEONMOON JOOHEELEE YUNGLYULKIM HAEKWANGJEON BYEUNGWOOLEE JUOCKKIM DONGWON
    • H04N7/32H04N7/36
    • H04N19/523H04N19/56H04N19/61
    • The present invention relates to an apparatus and a method for determining a motion vector. The apparatus for determining the motion vector according to an embodiment of the present invention comprises: a block identification unit for identifying a same position block included in a reference picture as a block which is at the same position as a present block; a motion block determination unit for determining whether the present block is a motion block on the basis of the motion vector of the same position block; a motion vector decision unit for deciding the motion vector of the present block according to the determined result; and a resolution conversion unit for converting the resolution of the motion vector of the same position block. According to the present invention, the motion vector resolution is decided in each image region or each motion vector. Inter-prediction encoding or decoding is performed by using the motion vector having the motion vector resolution which is adaptively decided with respect to images. In addition, the present invention enables efficient encoding by adaptively changing the motion vector resolution in predetermined region units of the images and performing the inter-prediction encoding for the images.
    • 本发明涉及用于确定运动矢量的装置和方法。 根据本发明的实施例的用于确定运动矢量的装置包括:块识别单元,用于将包括在参考图片中的相同位置块识别为与当前块位于相同位置的块; 运动块确定单元,用于基于相同位置块的运动矢量来确定当前块是否是运动块; 运动矢量决定单元,用于根据确定的结果来决定当前块的运动矢量; 以及分辨率转换单元,用于转换相同位置块的运动矢量的分辨率。 根据本发明,在每个图像区域或每个运动矢量中确定运动矢量分辨率。 通过使用具有相对于图像自适应地决定的运动矢量分辨率的运动矢量来执行帧间预测编码或解码。 另外,本发明能够通过在图像的预定区域单位中自适应地改变运动矢量分辨率并执行图像的帧间预测编码来实现高效编码。