Robot visual servo system involves a wide range of content, for example image processing, kinematics, dynamics, control theory, real-time calculation and so on.

The main technologies it involves including TV video image imitate; exterior ballistic simulation, waterspout coordinate processing; range bearing spotting imitate and real-time calculating.

It is proved that this method ensures the advantages of real-time processing and simple algorithm while improving the accuracy of the Two-point correction and enlarging dynamic range.