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    • 8. 发明授权
    • Motion vector detection using hierarchical calculation
    • 运动矢量检测采用分层计算
    • US5610658A
    • 1997-03-11
    • US380557
    • 1995-01-30
    • Masashi UchidaTetsujiro KondoHideo NakayaTakashi HorishiToshihiro Ishizaka
    • Masashi UchidaTetsujiro KondoHideo NakayaTakashi HorishiToshihiro Ishizaka
    • H04N11/04H04N19/423H04N19/50H04N19/51H04N19/523H04N19/533H04N19/80H04N7/32
    • H04N19/53
    • An amount-of-movement detection device which is capable of detecting the amount of movement with a high degree of accuracy when the amount of movement of an image is detected by hierarchical block matching method. An amount-of-movement detection device 1 forms image data S2.sub.n and S3.sub.n of plural hierarchies having different resolutions from each other, by input image S1.sub.n input at a first point in time, and forms multiplexed image data S2.sub.n-1 and S3.sub.n-1 of a higher hierarchy of low resolution, based on an input image S1.sub.n-1 input at a second point in time, by selecting pixels overlapping with each other from the image data of the lower hierarchy having higher resolution and reducing them in size, in order to detect a motion vector by block matching at a predetermined block unit for each of the hierarchies corresponding to the hierarchized image data S2.sub.n and S3.sub.n and the multiplexed and hierarchized image data S2.sub.n-1 and S3.sub.n-1. Thus, the accuracy in the detection of an amount of movement can be greatly enhanced.
    • 一种移动量检测装置,其能够通过分层块匹配方法检测图像的移动量​​时以高精度检测移动量。 移动量检测装置1通过在第一时间点输入的输入图像S1n形成具有不同分辨率的多个层次的图像数据S2n和S3n,并且形成多个图像数据S2n-1和S3n-1 基于在第二时间点输入的输入图像S1n-1,通过从具有较高分辨率的较低层次的图像数据中选择彼此重叠的像素并将其尺寸减小,从而更低层次的低分辨率,以便 对于与分级图像数据S2n和S3n以及多路复用和分层图像数据S2n-1和S3n-1相对应的每个层级,以预定块单位的块匹配来检测运动矢量。 因此,可以大大提高检测移动量的精度。