Point cloud classification and the features extraction of building facades with the corrected laser intensity value

Abstract:

A correction method for data model based on laser radar equation was presented for the laser intensity of point cloud from 3D laser scanning.The laser intensity value is corrected according to the different angles and distances, and the correction effect of the data model is also analyzed.With the corrected laser intensity value, the point cloud of building facades could be classified and the features could be extracted. The experiments results indicated that the correction model could effectively compensate laser intensity value, thus making the laser intensity value of congeneric objects trend to be unified.Therefore, the classification of point cloud and the feature extraction of building facades with corrected laser intensity value can guarantee the classification precision and target recognition effect.