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    • 2. 发明申请
    • Contour Standard Having A Rotationally Symmetrical Calibration Region, Use Of The Standard and Method For Calibrating And/Or Monitoring A Contour Measuring Instrument
    • 具有旋转对称校准区域的轮廓标准,使用标准和校准和/或监视轮廓测量仪的方法
    • US20140144203A1
    • 2014-05-29
    • US14113067
    • 2011-12-23
    • Thomas KohlerGerhard Wolf
    • Thomas KohlerGerhard Wolf
    • G01B5/20
    • G01B5/20G01B3/14G01B3/30G01B21/042
    • The invention is a contour standard, which consists of a body having a rotationally symmetrical calibration region. The rotationally symmetrical calibration region encompasses a plurality of non-cylindrical axial sections, which can be concave, convex, by forming a predefined angle as radial projection or as radial depression. The calibration region has at least one measuring section, which runs parallel to the longitudinal axis of the body and which provides for axial calibration variables, as well as radial calibration variables. These calibration variables are compared with the sensed values to the calibration of a measuring instrument and the measuring instrument is adjusted based on the basis of the determined deviation. Due to the rotationally symmetrical calibration region, the contour standard is suitable both for the calibration of touch contour measuring instruments and also for the calibration of contour measuring instruments, which measure optically.
    • 本发明是轮廓标准,其包括具有旋转对称的校准区域的主体。 旋转对称的校准区域包括多个非圆柱形轴向部分,其可以通过形成预定角度作为径向突出部或径向凹陷部而凹入,凸起。 校准区域具有至少一个测量部分,该测量部分平行于主体的纵向轴线延伸并且提供轴向校准变量以及径向校准变量。 将这些校准变量与测量仪器的校准的检测值进行比较,并根据确定的偏差的基础来调整测量仪器。 由于旋转对称的校准区域,轮廓标准适用于触摸轮廓测量仪器的校准,也适用于光学测量的轮廓测量仪器的校准。
    • 6. 发明授权
    • Computerized tomography method with helical relative movement and conical beam
    • 具有螺旋相对运动和锥形束的计算机断层扫描方法
    • US07430270B2
    • 2008-09-30
    • US11570101
    • 2005-06-09
    • Claas BontusThomas Kohler
    • Claas BontusThomas Kohler
    • H05G1/60
    • A61B6/4042A61B6/027A61B6/032A61B6/4035A61B6/4085G06T11/005
    • The invention relates to a computerized tomography method, wherein a radiation source executes an nPi relative movement along a helix with respect to an object. Acquired measured values are partially derived according to the angular position of the radiation source on the helix and intermediate filter values are generated by filtering the derived measured values along the filter lines with a k filter. Each intermediate filter value is multiplied by a filter factor, where the filter factor for intermediate filter values that have been generated by filtering the derived measured values along filter lines, which run exclusively within the Pi window, is greater than or equal to those filter factors by which the intermediate filter values are multiplied, which have been generated by filtering the derived measured values along filter lines, which run inside as well as outside the Pi window. The intermediate filter values assigned to a measured value are added to a filter value and the filter values are back-projected for reconstruction of a CT image.
    • 本发明涉及一种计算机断层摄影方法,其中辐射源相对于物体沿螺旋线执行nPi相对运动。 获得的测量值根据辐射源在螺旋上的角位置被部分地导出,并且通过用k滤波器对沿滤波器线的导出的测量值进行滤波来生成中间滤波器值。 每个中间滤波器值乘以一个滤波器因子,其中通过滤波器线产生的中间滤波器值的滤波因子,该滤波器值仅在Pi窗口内运行,大于或等于那些滤波器因子 通过它们乘以中间滤波器值,其通过沿着沿窗口内部以及外部的滤波器线过滤导出的测量值而产生。 分配给测量值的中间滤波器值被添加到滤波器值,并且滤波器值被反投影用于重建CT图像。