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    • 41. 发明申请
    • MOTION VECTOR ENCODING/DECODING METHOD AND DEVICE AND IMAGE ENCODING/DECODING METHOD AND DEVICE USING SAME
    • 运动矢量编码/解码方法和设备和图像编码/解码方法和使用其的设备
    • WO2011031030A3
    • 2011-06-16
    • PCT/KR2010005878
    • 2010-08-31
    • SK TELECOM CO LTDKIM SUNYEONLIM JEONGYEONJEON BYEUNGWOOMOON JOOHEELEE YUNGLYULKIM HAEKWANGHAN JONGKIYANG JUNGYOUPWON KWANGHYUN
    • KIM SUNYEONLIM JEONGYEONJEON BYEUNGWOOMOON JOOHEELEE YUNGLYULKIM HAEKWANGHAN JONGKIYANG JUNGYOUPWON KWANGHYUN
    • H04N7/32
    • H04N19/52H04N19/124H04N19/132H04N19/176H04N19/182H04N19/56H04N19/57H04N19/61
    • The present invention relates to a motion vector encoding/decoding method and device and an image encoding/decoding method and device using the same. The invention provides the motion vector encoding method comprising the steps of: selecting a predictive motion vector candidate set which includes one or more predictive motion vector candidates for a block; determining a search range for the predictive motion vector candidate set; selecting one predictive motion vector candidate of the one or more predictive motion vector candidates as a predictive motion vector candidate in accordance with each search point, according to the image decoding device and a first determination standard which is previously appointed for each search point within the search range; determining a predictive motion vector, a differential motion vector, and a current motion vector by selecting one predictive motion vector candidate of the predictive motion vector candidates in accordance with each search point, according to the image decoding device and a second determination standard which is not previously appointed; and generating and encoding the differential motion vector as motion information. According to the present invention, motion vectors are encoded by using more accurate predictive motion vectors, and there is no need to add information for identifying the predictive motion vectors to the encoded data, thereby improving the motion vector encoding efficiency.
    • 运动矢量编码/解码方法和装置及其图像编码/解码方法和装置技术领域本发明涉及运动矢量编码/解码方法和装置以及使用该方法和装置的图像编码/解码方法和装置。 本发明提供了一种运动矢量编码方法,包括以下步骤:选择包括块的一个或多个预测运动矢量候选的预测运动矢量候选组; 确定预测运动矢量候选组的搜索范围; 根据图像解码装置选择一个或多个预测运动矢量候选的一个预测运动矢量候选作为根据每个搜索点的预测运动矢量候选,以及先前为搜索内的每个搜索点指定的第一确定标准 范围; 根据所述图像解码装置,根据所述图像解码装置选择所述预测运动矢量候补的一个预测运动矢量候选,并且根据所述图像解码装置选择第二判定基准,来确定预测运动矢量,差分运动矢量和当前运动矢量 以前任命 并且将差分运动矢量生成和编码为运动信息。 根据本发明,通过使用更准确的预测运动矢量来编码运动矢量,并且不需要向编码数据添加用于识别预测运动矢量的信息,从而提高运动矢量编码效率。
    • 42. 发明申请
    • IMAGE ENCODING/DECODING METHOD AND DEVICE USING COEFFICIENTS OF ADAPTIVE INTERPOLATION FILTER
    • 图像编码/解码方法和使用自适应滤波器的系数的设备
    • WO2010047498A3
    • 2010-08-05
    • PCT/KR2009005963
    • 2009-10-16
    • SK TELECOM CO LTDKIM HAYOONHAN DONGHOONKIM KIOHKIM DAEYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOO
    • KIM HAYOONHAN DONGHOONKIM KIOHKIM DAEYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOO
    • H04N7/24
    • H04N19/117H04N19/139H04N19/14H04N19/172H04N19/176H04N19/523H04N19/61
    • The present invention relates to an image encoding/decoding method and device using coefficients of an adaptive interpolation filter. The image encoding device of the present invention comprises: a coefficient calculator for calculating coefficients of an adaptive interpolation filter of a current frame; an image encoder for interpolating a reference frame by using the coefficients of the adaptive interpolation filter, and for encoding the current frame by using the interpolated reference frame; a filter flag encoder for generating and encoding a flag with/without a coefficient inserted as a filter flag, based on the coefficient of the adaptive interpolation filter of the current frame; a coefficient encoder for encoding the coefficient of the adaptive interpolation filter of the current frame, if the flag with a coefficient inserted is the filter flag; and a bit-stream generator for generating and outputting a bit stream, the bit stream including the encoded current frame, the encoded filter flag and additionally the coefficient of the adaptive interpolation filter of the encoded current frame. According to the present invention, encoding efficiency or compression efficiency can be improved by reducing a bit amount for the adaptively determined coefficient of a filter, while encoding an image through the adaptive determination of the coefficient of an interpolation filter.
    • 本发明涉及使用自适应内插滤波器的系数的图像编码/解码方法和装置。 本发明的图像编码装置包括:用于计算当前帧的自适应内插滤波器的系数的系数计算器; 图像编码器,用于通过使用自适应内插滤波器的系数来内插参考帧,并且通过使用内插参考帧对当前帧进行编码; 滤波器标志编码器​​,用于基于当前帧的自适应内插滤波器的系数,生成和编码具有/不具有插入的系数作为滤波器标志的标志; 用于对当前帧的自适应内插滤波器的系数进行编码的系数编码器,如果具有插入系数的标志是滤波器标志; 以及比特流生成器,用于生成和输出比特流,比特流包括编码的当前帧,编码的滤波器标志以及另外的编码的当前帧的自适应内插滤波器的系数。 根据本发明,通过减少滤波器的自适应确定系数的比特量,通过内插滤波器的系数的自适应确定对图像进行编码,可以提高编码效率或压缩效率。
    • 46. 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。
    • 48. 发明申请
    • METHOD AND APPARATUS FOR SELECTING A PREDICTION MODE, AND IMAGE ENCODING/DECODING METHOD AND APPARATUS USING SAME
    • 用于选择预测模式的方法和装置,以及使用其的图像编码/解码方法和装置
    • WO2010120113A3
    • 2011-01-06
    • PCT/KR2010002307
    • 2010-04-14
    • SK TELECOM CO LTDKIM SUNYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOKIM DAEYEON
    • KIM SUNYEONLEE YUNGLYULMOON JOOHEEKIM HAEKWANGJEON BYEUNGWOOKIM DAEYEON
    • H04N7/32
    • H04N19/11H04N19/14H04N19/61
    • The present invention relates to a method and apparatus for selecting a prediction mode, and to an image encoding/decoding method and apparatus using same. The image encoding apparatus according to the present invention comprises a bit stream generator for: selecting an intra-prediction mode of a current block based on a variation in pixel values of adjacent pixels of the current block to be encoded in an input image, performing intra-prediction of the current block according to the intra-prediction mode of the selected current block, encoding generated remaining blocks, and generating encoded coefficient bits; generating and outputting a bitstream including the encoded coefficient bits and prediction mode bits indicating the intra-prediction mode of the selected current block in macroblock units or sub-block units; and selectively including the prediction mode bits in the bitstream based on the variation. According to the present invention, the selection process of a prediction mode for image compression can be simplified, the compression rate can be increased, and the size of compressed data can be reduced, to improve compression efficiency.
    • 本发明涉及一种用于选择预测模式的方法和装置,以及涉及使用它的图像编码/解码方法和装置。 根据本发明的图像编码装置包括:位流发生器,用于:基于要在输入图像中编码的当前块的相邻像素的像素值的变化来选择当前块的帧内预测模式,执行帧内预测模式 根据所选择的当前块的帧内预测模式预测当前块,编码所产生的剩余块并生成编码系数比特; 以宏块单位或子块单位生成并输出包括编码的系数比特和指示所选择的当前块的帧内预测模式的预测模式比特; 并且基于所述变化选择性地将所述预测模式位包括在所述比特流中。 根据本发明,可以简化用于图像压缩的预测模式的选择处理,可以提高压缩率,并且可以减小压缩数据的大小,以提高压缩效率。