3D Modeling of Highway Based on Section Plans

3D models of highway play an important role in engineering calculation,management of highway,project auditing and 3d presentation.An approach to 3d modeling of highways was proposed based on section plans.First,section plan files were read and segmented into several cross sections according to figure legends.Then,the cross sections along the center line of the highway were translated into the same coordinate frame.Finally,triangular surface were constructed with the shortest diagonal method.The proposed method improves the efficiency and accuracy of 3d modeling of highway.