一种标定摄影测量系统中基准尺长度的方法

摘要

介绍了一种简易标定数字近景摄影测量系统中基准尺实际长度的方法.即以检定合格的游标卡尺作为尺寸基准,利用游标卡尺拨动长度与基准尺长度的比例关系,来计算基准尺实际长度.实验结果表明,使用该方法标定具有速度快、精度高、成本低的优点,非常适合车间内基准尺长度标定.%An easy method is introduced to measure the length of the scale-bar which is used in digital close range photogrammetry.In the measurement, a certified vernier caliper is used as a length reference.The length of the scale-bar is calculated by the proportional relationship between the displacement of the vernier caliper and the length of the scale-bar.An experiment is carried out to check this method and the result shows the length of the scale-bar could be measured rapidly and precisely with low cost.Meanwhile this proposed method is very suitable for the workshop operation.