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热词
    • 10. 发明授权
    • Method of recognizing a circular arc segment for an image processing
apparatus
    • 识别图像处理装置的圆弧段的方法
    • US4969201A
    • 1990-11-06
    • US254846
    • 1988-10-07
    • Naruto TakasakiNobuyuki ShimizuYutaka Tanaka
    • Naruto TakasakiNobuyuki ShimizuYutaka Tanaka
    • G06F17/50G06K9/46G06T7/60
    • G06K9/4604
    • A method of recognizing an arcuate or circular arc segment is used with an image processing apparatus. In a first step, two arbitray image structuring points are selected as segmenting end points from the dot-line image data. next, an image structuring point among the image structuring points present within a segment divided by the segment end points that is located furthest from and in a direction perpendicular to a straight line connecting the given structuring points and within a distance which is equal to or larger than a constant distance is extracted. The, three consecutive, adjacent polygonal-line structuring points are recognized as an arcuate or circular arc segment when a distance between a virtual circle passing through the three adjacent points and a median point of two line segments formed by the three consecutive points is equal to or less than the constant distance.
    • 与图像处理装置一起使用识别弓形或圆弧段的方法。 在第一步中,从点线图像数据中选择两个仲裁图像结构点作为分割结束点。 接下来,存在于由分段端点分割的图像结构点内的图像结构点,所述段终点位于与连接给定结构点的直线垂直的方向上并且在垂直于等于或大于其的距离的直线的方向 比提取恒定距离。 当通过三个相邻点的虚拟圆与由三个连续点形成的两个线段的中点之间的距离等于三个相邻的多边形线结构点时,三个相邻的多边形线结构点被识别为弧形或圆弧段 或小于恒定距离。