ABSTRACT
With the increase of the computer's image processing ability, the development of the vision navigation system of intelligent agricultural mobile robot is becoming one of the international research orientations. The navigation system can be either wireless or wired. In the early research of the vision navigation system, Nohsoh adopted the white strips paved on the road as the signposts; during its walk, the robot would continuously detect the signposts and adjust the deviation between its route and the signposts; when encountering obstacles, the robot would wait or steer clear of them before it would return to the original route according to the signposts and eventually arrive at the appointed destination. This kind of wired vision navigation system features simple and reliable signposts, low cost, good flexibility, smooth control and easy realization of image processing technology. But it requires regular working environment and fixed pavement, which is not quite applicable to the agricultural robot in complex working environment.
