The scanning measurement in optical CT calculates the length of ray across the pixel rapidly and accurately by using the coordinate intersected by the ray and the parallel to the reference frame.

• 摘要 改进的光学CT扫描测量方法利用扫描线与平行于两坐标轴的平行线束交点坐标，快速精确计算出扫描线穿过每个像素格子的长度。