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    • 3. 发明授权
    • Optical measuring method
    • 光学测量方法
    • US5608817A
    • 1997-03-04
    • US338193
    • 1994-11-09
    • Naoji YamaokaKoji Oda
    • Naoji YamaokaKoji Oda
    • G01B11/02G06T5/00G06T7/00G06K9/00G01B11/24
    • G06T7/0083G01B11/028G06T7/004G06T2207/30164
    • An optical measuring method for measuring a position of an edge portion of a workpiece uses an optical measuring apparatus having a projector for radiating a slit light on the workpiece and an image sensing device for picturing an optical cutting image drawn by the slit light radiated on the workpiece. The measuring is made from a pictured optical cutting image on a screen of the image sensing device. In the method, coordinates of an end point on a side of an edge portion of the pictured optical cutting image are obtained. Windows are set in predetermined two positions in that portion of the pictured optical cutting image which extends straight. Coordinates of respective centers of gravity of the pictured optical cutting image inside both the windows are obtained. An equation of a first straight line which passes through both the centers of gravity and an equation of a second straight line which crosses the first straight line at right angles and which passes through the end point are obtained. Coordinates of a crossing point of both the straight lines are obtained.
    • 用于测量工件的边缘部分的位置的光学测量方法使用具有用于在工件上照射狭缝光的投影仪的光学测量装置,以及用于对由辐射在该工件上的狭缝光绘制的光学切割图像进行图像的图像感测装置 工件。 该测量由图像感测装置的屏幕上的图像光学切割图像进行。 在该方法中,获得图像光学切割图像的边缘部分的端点的坐标。 Windows被设置在直线延伸的图像光学切割图像的那部分中的预定的两个位置。 获得在两个窗口内的图像光学切割图像的各个重心的坐标。 获得通过重心的第一直线的方程式,并且获得直角穿过第一直线并通过终点的第二直线的方程式。 获得两条直线的交叉点的坐标。
    • 4. 发明授权
    • Picture processing method in optical measuring apparatus
    • 光学测量仪器中的图像处理方法
    • US5311289A
    • 1994-05-10
    • US936301
    • 1992-08-28
    • Naoji YamaokaManabu TuchidaYukihiro Yaguchi
    • Naoji YamaokaManabu TuchidaYukihiro Yaguchi
    • G06T7/00G01B11/24
    • G06T7/004G06T2207/30164
    • An optical measuring apparatus for use in this method has a projector for radiating a slit light on a workpiece and an image sensing device for picturing an optically cross-sectional image drawn by the slit light radiated on the workpiece. An optical axis of the slit light and an optical axis of the image sensing device cross each other at an oblique angle. Setting windows are set at predetermined positions of the optically cross-sectional image on a screen of the image sensing device. A position of center of gravity of each optically cross-sectional image in each of the windows is measured. An amount of displacement in an X-axis direction of the optically cross-sectional image on the screen is measured. A rate of magnification of the optically cross-sectional image in a Y-axis direction is calculated from the amount of displacement. Setting positions of the windows in the Y-axis direction and sizes thereof in the Y-axis direction are changed depending on the rate of magnification.
    • 在该方法中使用的光学测量装置具有用于在工件上照射狭缝光的投影仪和用于绘制由辐射在工件上的狭缝光绘制的光学截面图像的图像感测装置。 狭缝光的光轴和图像感测装置的光轴以倾斜角彼此交叉。 设置窗口设置在图像感测装置的屏幕上的光学截面图像的预定位置处。 测量每个窗口中每个光学横截面图像的重心位置。 测量屏幕上的光学横截面图像的X轴方向上的位移量。 根据位移量计算光学截面图像在Y轴方向上的倍率。 Y轴方向上的窗口的设定位置和Y轴方向的尺寸根据倍率而变化。