“…The black and white checkered board has three inner corner points, respectively, P 1 , P 2 , and P 3 ; the coordination record under CCS P 1 , P 2 , and P 3 is recorded as P 1 ðx 1 , y 1 , z 1 Þ, P 2 ðx 2 , y 2 , z 2 Þ, and P 3 ðx 3 , y 3 , z 3 Þ. The space vector under CCS is constructed according to the space coordinates of three points, with point P 1 as the common point, and points P 2 and points P 3 , respectively, form vectors, and the two vectors are perpendicular to each other to form the X-Y axis of SCS, as shown in Formula ( 6) and (7). The Z-axis is determined according to the right rectangular coordinate system, as shown in Formula (8).…”