Structured Line and Plane Feature Reconstruction Method of Urban Mesh Model

Abstract:

To improve blurred edges in the real three-dimensional model， a curvature-guided structured line and plane feature reconstruction method was proposed. The meshes were divided into the plane， developable concave， developable convex， and non-developable surface according to curvature characteristics. The plane was extracted from the plane segmentation results， and the straight line was extracted from the developable concave and convex segmentation results. The non-developable area was reserved. Finally， a hybrid mesh model containing geometric features was formed. The results show that the potential range of geometric features is preset in combination with the curvature information， which makes the extracted structured line and plane feature more accurate than other methods. Furthermore， the hybrid model ensures that the complex tree structure in the city scene is not mistakenly extracted as a plane.

Key words:real three-dimensional model;three-dimensional reconstruction;mesh;line feature;plane feature;Markov random field (MRF);simplification