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    • 2. 发明授权
    • Method and device for calibrating a gravity-sensitive image pick-up device and for imaging by means of such an image pick-up device
    • 用于校准重力敏感图像拾取装置并通过这种图像拾取装置进行成像的方法和装置
    • US06739752B2
    • 2004-05-25
    • US10294293
    • 2002-11-14
    • Joerg SabczynskiWaldemar Zylka
    • Joerg SabczynskiWaldemar Zylka
    • G01D1800
    • A61B6/583A61B6/4441G06T5/006
    • A description is given of a method and a device for the calibration of an image pick-up device which is sensitive to gravity. Also described are a method and a device for imaging by means of such an image pick-up device; they are used in particular in X-ray systems, for example, systems provided with a C-arm. Calibration is performed essentially by forming and storing a look-up table whereby the calibration data required for the correction of distortions due to the supporting construction is associated with a plurality of position data of the supporting construction. During imaging the direction of the force of gravity relative to the supporting construction is measured; therefrom the position data is calculated and the calibration data associated with this data in the table is read out and used for the correction of the acquired image.
    • 给出了对重力敏感的图像拾取装置的校准方法和装置的描述。 还描述了通过这种图像拾取装置进行成像的方法和装置; 它们特别用于X射线系统,例如具有C臂的系统。 基本上通过形成和存储查找表来执行校准,由此由于支撑结构而校正失真所需的校准数据与支撑结构的多个位置数据相关联。 在成像期间测量重力相对于支撑结构的方向; 从而计算位置数据,并且读出与表中的该数据相关联的校准数据,并用于校正所获取的图像。