PROPOSED ALGORITHM OF ELIMINATING REDUNDANT DATA OF LASER SCANNING FOR CREATING DIGITAL RELIEF MODELS

Aerial laser scanning for creating digital relief models has been widely applied in Russia for over 20 years. For processing results of aerial laser scanning, it is necessary to classify cloud of laser points. Classification of cloud of laser points is performed via commercial software products (produced abroad), which frequently use refinement algorithms of “Earth” class data, which consider the relief particularities. The paper puts forward a proprietary algorithm of laser scanning data interpolation, enabling to remove redundant cloud of laser points of “Earth” class when data granularity reduces, in the first place, for flat terrain. The paper provides a detailed stepwise description of algorithm operation, and the results of constructing a digital relief model on the basis of the cloud of laser points of “Earth” class, processed via the proposed algorithm