METHOD AND APPARATUS FOR CONSTRUCTING A DIGITAL ELEVATION MODEL UTILIZING GROUND POINTS CAPTURED BY GROUND-BASED LiDAR

摘要

A method, apparatus and computer program product are provided to construct a digital elevation model utilizing ground points captured by ground-based light detection and ranging (LiDAR). In the context of a method,a plurality of ground points are extracted from a data set captured by ground-based LiDAR to construct a digital elevation model. Each ground point includes positional information including an altitude. The method also includes identifying one or more road structures that are altitudinally offset from surrounding terrain based upon the plurality of ground points and modifying the ground points of the digital elevation model that are representative of the one or more road structures that are altitudinally offset from the surrounding terrain. The method further includes at least partially filling regions in the digital elevation model that lack ground points captured by ground-based LiDAR.