IMPACT OF MOBILE LASER SCANNING DATA PRELIMINARY PROCESSING RESULTS ON ACCURACY OF GENERATING DIGITAL MODELS OF ROAD PAVEMENT
Various technical equipment is used for surveying the condition of the road surface. One of the most modern methods for assessing the state of roads is mobile laser scanning (MLS), which allows obtaining a point model of road surface with high density accuracy and within a short period of time. After generating a digital surface model (DSM) from an array of laser points, we can identify various defects of the roadway and evaluate its flatness. A prerequisite for obtaining reliable survey results is increased accuracy of the pre-processed point cloud. During the pre-processing 2D scanners and digital cameras are calibrated, point clouds are adjusted and filtered. The necessity for increased accuracy of pre-processing results for the purpose of generating the DSM imposes certain requirements on data processing techniques. For this purpose, additional study of the MLS data accuracy should be often carried out. The results of preliminary processed MLS data in order to generate high-accuracy DSM of road pavement are discussed.