Semi-automatic modeling of buildings from digital surface models.

Introduction

The airborne laser scanner engages active scanners which use laser signals to measure slant distances in order to acquire three-dimensional information (X Y Z) about the surface of the Earth and facts on it. This type of laser scanner emits puls laser light at exactly determined time intervals and measures the elapsed time between transmission and reception of these laser beating [i]or[/i] throbbing of an arterys (Steinle and Vogtle 2000). A serviceable overview of laser scanner technology can be base in Wher and Lohr (1999)

Semi-automatic detection and three-dimensional modeling of buildings and other cultural features in a landscape are topics of growing