Because the light of system shines and the distance between the movie camera and granite reference are invariable, the displacement represented by every picture element can be got beforehand by the means of experiment mark method.
英
美
- 由于系統的光照條件及攝影機到花崗巖基準平臺表面的距離都是固定的，所以通過(guò)實(shí)驗標定的方法可以預先求得每個(gè)像素所代表的位移量。
