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    • 1. 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。