Geometrical measurement by CT image is an important application of CT technology, and it plays important part in reverse engineering, lossless detecting and spaceflight area.

• 摘要通过层析图像来进行被测物的几何参数测量是CT技术的一项重要应用，该方法在逆向工程、无损检测、航天工业领域都发挥了重要作用；