Image coded data re-encoding apparatus
    3.
    发明公开
    Image coded data re-encoding apparatus 失效
    Vorrichtung zur Umkodierung von kodierten Bilddaten

    公开(公告)号:EP0710030A1

    公开(公告)日:1996-05-01

    申请号:EP95108784.0

    申请日:1995-06-07

    IPC分类号: H04N7/26

    CPC分类号: H04N19/40

    摘要: A image coded data re-encoding apparatus for regenerated image coded data for transmission or storing by re-encoding decoded image data according to the present invention comprises an image decoder for decoding image coded data, an object for re-encoding, and an image coder for re-encoding the decoded image data, and corresponds to the configuration of international standardizing system MPEG1. The quantizer (4) executes quantization using decoded parameters for quantization from the variable length decoder (11) and transform coefficient inverse quantized by the inverse quantizer (12). The variable length coder (5) outputs image coded data not decoded by the variable length decoder as it is. The motion compensation predictor (10) predicts motion compensation using motion vectors decoded by the variable length decoder.

    摘要翻译: 根据本发明的用于通过重新编码解码图像数据进行发送或存储的再生图像编码数据的图像编码数据重新编码装置包括用于解码图像编码数据的图像解码器,用于重新编码的对象和图像编码器 用于重新编码解码的图像数据,并且对应于国际标准化系统MPEG1的配置。 量化器(4)使用来自可变长度解码器(11)的量化解码参数和由逆量化器(12)逆量化的变换系数执行量化。 可变长度编码器(5)原样输出未被可变长度解码器解码的图像编码数据。 运动补偿预测器(10)使用由可变长度解码器解码的运动矢量来预测运动补偿。

    Method and apparatus for the motion compensated predictive coding of an image signal
    10.
    发明公开
    Method and apparatus for the motion compensated predictive coding of an image signal 失效
    对于具有运动补偿的图像信号的预测编码方法和装置。

    公开(公告)号:EP0508351A2

    公开(公告)日:1992-10-14

    申请号:EP92105930.9

    申请日:1992-04-06

    IPC分类号: H04N7/137

    摘要: 7 A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector. The motion vector is indicative of the displacement differences between the image signal and the previous image signal. The image signal may be organized into blocks of pixel data for a single field or for multiple fields when motion detection is performed on the image signal by the motion detector. A subtracter generates a prediction compensation error signal by subtracting the pixel data in the previous image signal from the pixel data of the image signal. A coder receives the prediction compensation error signal and generates an appropriate coded output. The apparatus may also include an adaptive blocking mechanism for receiving the prediction compensation error signal and organizing the data in the signal into blocks into one of several fashions as dictated by the motion vector.

    摘要翻译: 运动补偿预测编码装置包括用于在图像信号与先前图像信号的像素数据进行比较的像素数据,以产生运动矢量的运动检测器。 的运动矢量指示的图像信号和先前图像信号之间的位移的差异。 的图像信号可以为单个场或用于当运动检测由所述运动检测器的图像信号上执行多个字段被组织成像素数据块。 减法器基因费率通过从图像信号的像素数据之前的图像信号中减去该像素的数据的预测误差信号的补偿。 的编码器接收关于适当的编码输出的预测误差信号的补偿和基因率。 因此,该装置可以包括在自适应阻挡机构,用于接收所述预测误差信号和补偿在信号中的数据组织成块成几个时装之一由运动矢量所指示的。