里面有3篇关于GIS地图校准的算法论文，具有一定的实用价值，可以应用与各种场合，对于需要校准建模也具有一定的参考价值！-There are three on the GIS map calibration algorithm papers, has a certain practical value, can be applied with a variety of occasions, the need for calibration modeling also has some refere