The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Publications Copernicus
Articles | Volume XXXIX-B5
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B5, 601–606, 2012
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B5, 601–606, 2012

  26 Sep 2012

26 Sep 2012


M. Scaioni M. Scaioni
  • Tongji University – College of Surveying and Geo-Informatics Centre for Spatial Information Science and Sustainable Development Applications 1239 Siping Road, 200092 Shanghai, P.R. China

Keywords: Geo-referencing, Least Squares, Monte Carlo method, Reliability Analysis, Terrestrial Laser Scanning

Abstract. The paper presents some considerations on the estimation of rigid-body transformation which is the basis for registration and georeferencing in terrestrial laser scanning. Two main issues are afforded, which in the opinion of the author have been poorly investigated up until now. The first one concerns the analysis of the stochastic model of Least Squares estimation of the transformation. In standard practice, the control points used for parameter estimation are considered as equally precise. Here two different approaches for weighting observations in laser scan and ground control points are proposed and evaluated through a set of Monte Carlo simulations. The second aspect refers to the reliability analysis. In particular the estimation of a joint-adjustment including both geo-referencing parameters and geodetic network observations for the determination of ground control points is discussed and evaluated.