The paper introduces a number of navigation line image detection methods, including rice transplanting, paddy field manage, sowing wheat and wheat field managing. And it exhibites various navigation line detection results including farming, seeding corn, sowing cotton, wheat harvest, corn harvest and cotton harvesting. A developed prototype machine is also reported on its test in the cotton spraying field. The test result shows that at a speed of 4.7 km/h, the following error of cotton seedling column is 2cm, which proves the vision navigation is practical.

field work  /  visual navigation  /  image detection of navigation line  /  field-edge detection  /  performance detection