Method and device for converting number of frames of image signals
    22.
    发明授权
    Method and device for converting number of frames of image signals 有权
    用于转换图像信号帧数的方法和装置

    公开(公告)号:US06611294B1

    公开(公告)日:2003-08-26

    申请号:US09720327

    申请日:2000-12-22

    IPC分类号: H04N701

    摘要: The present invention provides a movement correction frame count transformation apparatus for carrying out frame count transformation processing on a picture signal. In the apparatus, an input picture signal (S1) of interlaced scanning is converted into a signal (S2) of sequential scanning by an IP conversion unit (1). A movement detecting unit (3) detects movement detection signals (MD1 and MD2). A block unit movement vector searching unit (4) detects a block unit movement vector (BMV) by carrying out block matching processing. A movement vector correcting unit (5) carries out miniblock division processing to generate a movement vector (BV) if a movement correction error is equal to or greater than a threshold value. A pixel unit movement vector generating unit (6) generates a movement vector with a smallest error component between a frame signal of a current frame and a frame signal of an immediately preceding frame as a movement vector of a pixel. An MC interpolation frame signal generating unit (7) generates an interpolation frame in movement correction processing carried out by a median filter in order to produce a signal (S4) of sequential scanning as a result of frame count transformation based on movement correction.

    摘要翻译: 本发明提供一种用于对图像信号执行帧计数变换处理的移动校正帧计数变换装置。 在该装置中,隔行扫描的输入图像信号(S1)被IP转换单元(1)转换成顺序扫描的信号(S2)。 移动检测单元(3)检测移动检测信号(MD1和MD2)。 块单元移动向量搜索单元(4)通过执行块匹配处理来检测块单元移动向量(BMV)。 如果移动校正误差等于或大于阈值,则运动矢量校正单元(5)执行小块分割处理以生成运动矢量(BV)。 像素单元移动向量生成单元(6)生成当前帧的帧信号与前一帧的帧信号之间的最小误差分量的运动矢量作为像素的运动矢量。 MC内插帧信号生成单元(7)生成由中值滤波器执行的移动校正处理中的内插帧,以便基于移动校正产生作为帧计数变换的结果的顺序扫描的信号(S4)。