DISPLACEMENT MEASURING MARK FOR ROTATING OBJECT BY USING LINE SCAN CAMERA AND MEASURING METHOD THEREOF

摘要

PURPOSE: A displacement measuring mark for a rotating object by using a line scan camera and a method for measuring the displacement are provided to measure a 2-D rotation motion of an object from 1-D linear image data and precisely measure the motion of a high speed rotating object. CONSTITUTION: A displacement measuring mark for a rotating object is measured by using a line scan camera. The mark includes two concentric circles between inner and outer circles having different radius from each other, and a spiral connecting the two concentric circles and rotating between the two concentric circles by 720deg.. The inner circle having a smaller radius is black, and the center(C) of the displacement measuring mark is equal to the center of the object.