A new method for the estimation of maximum instantaneous distortion contour maps is proposed based on the FletcherReeves nonlinear optimum theory in this paper.

The image distortion in the vision system of Microsot Robot Soccer was analyzed.

The principle and the rectifying method of strap-down line scanning image distortion are introdued.

Calibration of graphic distortion and compensation of exposure for dual galvanometer scanning;

According to the graphic distortion of the laser galvanom, a kind of conic calibration model was put forward based on post-validation of geometry distortion caused by the imaging system.

In order to improve scan precision of the laser galvanometer scan system,especially when scan area is large,the reasons of graphic distortion are analyzed in this paper when the laser galvanometer scan system is running,and the whole bag of compensating tricks are put forward for every reason of corresponding graphic distortion.