Towards an automatic registration for terrestrial laser scanner data [Elektronische Ressource] / von Ismail Abd El hamid Mohamed, El khrachy

TOWARDS AN AUTOMATIC REGISTRATION FORTERRESTRIAL LASER SCANNER DATAVon derFakult¨at Architektur, Bauingenieurwesen und Umweltwissenschaftender Technischen Universit¨at Carolo-Wilhelminazu Braunschweigzur Erlangung des Grades einesDoktor - Ingenieurs (Dr.-Ing.)genehmigteDissertationvon(M.Sc., Ismail Abd El hamid Mohamed, El khrachy)¨aus(Kairo/Agypten)Eingereicht am 11.12.2007Mu¨ndliche Pru¨fung am 29.02.2008Berichterstatter Univ.-Prof. Dr.-Ing. Wolfgang NiemeierUniv.-Prof. Dr.-Ing. Otto Heunecke2008AbstractThis thesis presents terrestrial laser scanning as a tool for the documentation of the scan object suchasheritagesites.Foratypicallaserscanningprojectthereisusuallymorethanonescanacquiredfromdifferent setup locations around the scan object. Data registration means collecting of separated scanswithin one scan world coordinate system. Data registration could be achieved based on the targetsmethod or the point cloud method.If registration targets (sometimes called tie points) are available, data can be registered by a man-ner similar to that used in aerial triangulation method. These tie points such as special reflectivetarget, black-white targets or sphere targets can be used as correspondence (points) between adjacentscans. These targets should be distributed within the laser scanner field of view to be scanned duringthe scanning process. After modeling the registration target, the transformation parameters can becalculated.