A plane calibration board with tessellated pattern is placed on the rotating stage, the calibration board was recorded at every point when the stage was rotated.

• 将一个绘制有棋盘格图案的靶标倾斜地放在旋转平台上,控制旋转平台任意旋转几个角度,并拍摄下每个位置处靶标的图片。