Visible light image distance measuring method based on monocular vision

The invention discloses a visible light image distance measuring method based on monocular vision. The visible light image distance measuring method comprises the following steps: firstly, collecting an image by using a camera with a fixed angle; then, establishing a one-to-one correspondence relation of vertical and horizontal distances of each two adjacent pixels in the image and an actual space distance; and finally, obtaining an actual distance between any two points in the image through the one-to-one correspondence relation. The visible light image distance measuring method adopts a single camera to work and realizes distance measurement through a computer, so that the equipment complexity is reduced and the equipment cost is effectively reduced; the actual height and the horizontal distance of each pixel point in the image are calculated and the actual horizontal distance and height are measured so that the calculation complexity is reduced.