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    • 36. 发明申请
    • THREE-DIMENSIONAL COMPUTED TOMOGRAPHY GAUGE
    • 三维计算机层析成像仪
    • WO2017070442A1
    • 2017-04-27
    • PCT/US2016/058067
    • 2016-10-21
    • HEXAGON METROLOGY, INC.
    • O'HARE, Jonathan J.
    • G01N23/04G01T7/00G06T11/00A61B6/00
    • A61B6/584A61B6/032G01B15/00G01N23/046G01T7/005
    • A method of calibrating an x-ray computed tomography machine provides an x-ray computed tomography machine having calibration settings, and uses the x-ray computed tomography machine to produce a gauge reconstruction. The gauge has a first base (20) supporting two or more objects (22), and a second base (21) supporting two or more objects (22). The first base and the second base form a perpendicular configuration, and each of the plurality of objects is secured on at least one of the first base and the second base. Each of the objects has a center, and the distance between the centers of each object is known. The method then measures the distance between at least two objects to produce measured center distance values, compares the measured center distance values against the known center distance values, and uses the comparison to determine if there is a distance error in the gauge reconstruction.
    • 校准X射线计算机断层摄影机的方法提供了具有校准设置的X射线计算机断层摄影机,并且使用该X射线计算机断层摄影机来产生规则重建。 量规具有支撑两个或多个物体(22)的第一基座(20)和支撑两个或多个物体(22)的第二基座(21)。 第一基部和第二基部形成垂直构造,并且多个物体中的每一个固定在第一基部和第二基部中的至少一个上。 每个对象都有一个中心,并且每个对象的中心之间的距离是已知的。 该方法然后测量至少两个物体之间的距离以产生测量的中心距离值,将测量的中心距离值与已知的中心距离值进行比较,并且使用该比较来确定在规则重建中是否存在距离误差。 p>
    • 38. 发明申请
    • SYSTEM AND METHOD FOR MEASURING AN OBJECT USING X-RAY PROJECTIONS
    • 使用X射线投影测量对象的系统和方法
    • WO2016053677A1
    • 2016-04-07
    • PCT/US2015/051383
    • 2015-09-22
    • HEXAGON METROLOGY, INC.
    • O'HARE, Jonathan J.
    • G01B15/00G06T17/00G01N23/203
    • G01N23/046G01B15/00G01N2223/645G06T17/20
    • An apparatus and method of measuring an object (having at least two edges) projects a plurality of x-ray images of the object. At least two of the plurality of x-ray images are projected from different directions relative to the object. The apparatus and method also locate the at least two edges in the x-ray images, and ray trace a plurality of lines. Each ray traced line is tangent to at least one point on at least one of the located edges. Next, the apparatus and method reconstruct at least a partial wireframe model of the object from the tangent points of the ray traced lines. The wireframe model includes the at least two edges. Finally, the apparatus and method measure between the at least two edges of the at least partial wireframe model.
    • 测量物体(具有至少两个边缘)的装置和方法投射物体的多个x射线图像。 多个x射线图像中的至少两个相对于物体从不同的方向投影。 该装置和方法还将X射线图像中的至少两个边缘定位,并且射线追踪多条线。 每条光线跟踪线与至少一个定位边缘上的至少一个点相切。 接下来,该装置和方法从光线跟踪线的切点重建物体的至少部分线框模型。 线框模型包括至少两个边缘。 最后,所述装置和方法测量所述至少部分线框模型的所述至少两个边缘之间。