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    • 1. 发明授权
    • Pattern recognition system
    • 模式识别系统
    • US4769850A
    • 1988-09-06
    • US917583
    • 1986-10-10
    • Shoji ItohHideo Suzuki
    • Shoji ItohHideo Suzuki
    • A61B6/00G06K9/46G06Q50/22G06Q50/24G06T7/00
    • G06K9/4609
    • The present invention relates to apparatus for separately extracting circular and linear components in a complex image, the apparatus comprising: (a) a circular filter means for covering a portion of the complex image by filter blocks, wherein the filter blocks comprise a center block and at least one set of blocks angularly disposed to encircle the center block; (b) a first calculator element for computing average image concentration value for each of a plurality of directions with said circular filter means covering a subject portion of the complex image, wherein the concentration value for one directional component is a maximum; (c) a second calculator element for computing a first feature S in which the values of the directional components are evaluated with maximum directional component being enhanced; (d) a third calculator element for computing a second feature value S' in which the values of the directional components are evaluated with the maximum directional component being weakened; and (e) a mode selector for selectively applying (i) the first feature value S to detect linear image components and (ii) the second feature value S' to detect circular image components.
    • 本发明涉及用于在复杂图像中单独提取圆形和线性分量的装置,该装置包括:(a)圆形滤波器装置,用于通过滤波器块覆盖复数图像的一部分,其中滤波器块包括中心块和 至少一组块,其角度地设置成环绕中心块; (b)第一计算器元件,用于利用覆盖复合图像的对象部分的所述圆形滤波器装置计算多个方向中的每一个的平均图像浓度值,其中一个方向分量的浓度值是最大值; (c)用于计算第一特征S的第二计算器元件,其中以最大方向分量被增强来评估方向分量的值; (d)用于计算第二特征值S'的第三计算器元件,其中以最大方向分量被削弱来评估方向分量的值; 和(e)用于选择性地应用(i)第一特征值S以检测线性图像分量的模式选择器,以及(ii)第二特征值S'以检测圆形图像分量。