Track detection is the basic protection of the railway and the subway development in China. In order to finish the track detecting work better,firstly introduce the developing trends and up to date method used in the track detection. Then based on the binocular vision system in computer vision technology,build a image collecting system. Aiming at the two images collected of a same track from two different angles,have done researches on track surface image process algorithm. Compare and analyze the Otsu algo...