The 3D modeling of coal mine laneway is the core issue of constructing coal virtual environment

but the work of the existing laneway modeling method is large

and its unable to realize fast modeling.This paper investigates digital image-based three-dimensional reconstruction method

and applies to the fast three-dimensional modeling of laneway

obtains matching points of laneway images by corner detection and matching

and calculates the coordinates of space points

ultimately implements surface restoration by the Delaunay triangulation technology

and gives the experimental results of a laneway three-dimensional reconstruction system using OpenCV.