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    • 6. 发明公开
    • Video decoder and video decoding method
    • Videodekoder和Videodekodierverfahren
    • EP2252067A2
    • 2010-11-17
    • EP10008596.8
    • 1997-10-23
    • MITSUBISHI DENKI KABUSHIKI KAISHA
    • Sekiguchi, ShunichiArai, ShintaroMurakami, TokumichiNishikawa, HirofumiKuroda, ShinichiIsu, YoshimiHasegawa, Yuri
    • H04N7/32H04N7/26
    • H04N19/523H04N19/53H04N19/537H04N19/61
    • It is an object of the invention to obtain a video decoder performing a highly accurate prediction of a picture, transformed by other than translation, within a short processing time in a small-scaled circuit. A video encoder for performing compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector including a transformed block matching unit for transforming a reference picture portion into a picture portion having a predefined shape for performing motion detection and a motion compensator including a corresponding pel determinator for determining integer pels of real sample points of the transformed reference picture portion corresponding to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder can be combined with a video decoder having a motion compensator which performs the same operations as those in the video encoder to configure a video encoding and decoding system. The video decoder uses half-pels of the reference picture in the motion compensator as well as integer pels, computes pel positions using plural motion vectors, and transforms the obtained pel value into a predefined form by the transformation pattern.
    • 本发明的一个目的是在小规模电路的短处理时间内,获得一个视频译码器,该视频解码器在短时间内对除了转换之外的图像进行高精度预测。 用于执行输入图像的压缩编码的视频编码器包括用于执行帧间运动检测的运动补偿预测装置。 运动补偿预测装置具有运动检测器,其包括用于将参考图像部分变换成具有用于执行运动检测的预定形状的图像部分的变换块匹配单元和包括用于确定实际采样点的整数像素的对应像素确定器的运动补偿器 根据由运动检测器提供的运动参数作为比较结果,对应于输入图像块的整数的变换的参考图像部分,以提供预测图像数据。 视频编码器可以与具有运动补偿器的视频解码器组合,运动补偿器执行与视频编码器相同的操作以配置视频编码和解码系统。 视频解码器使用运动补偿器中的参考图像的半像素以及整数像素,使用多个运动矢量计算像素位置,并且通过变换图案将获得的像素值变换为预定义的形式。