Target spatialization algorithm based on single image

This paper presents a target spatialization algorithm based on a two-dimensional image,without knowing the parameters of the camera.It is on the basis of four coplanar lines on the object matching with their perspective image.The basic steps include image preprocessing,edge detection by using Prewitt operator,determination of the image region based on contour feature and the topological relations,demarcation of the parameters of the camera and realization of the two-dimensional spatial location.Experimental results show that the method is faster and has higher precision.