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    Image encoder, image decoder, image encoding method, image decoding method and image encoding/decoding system
    23.
    发明授权
    Image encoder, image decoder, image encoding method, image decoding method and image encoding/decoding system 有权
    图像编码器，图像解码器，图像编码方法，图像解码方法和图像编码/解码系统

    公开(公告)号：US06404815B1

    公开(公告)日：2002-06-11

    申请号：US09180188

    申请日：1999-01-19

    申请人： Shunichi Sekiguchi ,  Kohtaro Asai ,  Tokumichi Murakami ,  Hirofumi Nishikawa ,  Shinichi Kuroda ,  Yoshimi Isu ,  Yuri Hasegawa

    发明人： Shunichi Sekiguchi ,  Kohtaro Asai ,  Tokumichi Murakami ,  Hirofumi Nishikawa ,  Shinichi Kuroda ,  Yoshimi Isu ,  Yuri Hasegawa

    IPC分类号： H04N712

    CPC分类号： H04N19/523 ,  H04N19/53 ,  H04N19/537 ,  H04N19/61

    摘要： An efficient video encoder and a 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 and a motion compensator. The motion detector includes an image transforming unit that transforms a reference picture portion into a picture portion having a predefined shape. The motion compensator includes a pel determinator for determining integer pels of real sample points of the transformed reference picture portion that corresponds 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 and a decoder having a motion compensator that performs operations similar to the video encoder are combined to form a video encoding and decoding system.

    摘要翻译： 有效的视频编码器和输入图像的压缩编码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和运动补偿器。 运动检测器包括将参考图像部分变换为具有预定形状的图像部分的图像变换单元。 运动补偿器包括：像素确定器，用于根据由运动检测器提供的运动参数作为比较的结果，确定变换的参考图像部分的实际采样点的整数像素对应于输入图像块的整数像素，以便 以提供预测图像数据。 视频编码器和具有执行与视频编码器类似的操作的运动补偿器的解码器被组合以形成视频编码和解码系统。