Laser scanning and digital imaging for the investigation of an ancient building: Palazzo d’Accursio study case (Bologna, Italy)

Abstract This paper describes a scientific approach aimed at studying the ancient part of Palazzo d’Accursio (Bologna, Italy), a masonry building which is part of the Italian cultural heritage. Laser scanning and the inspection of digital images are used to detect traces of restoration works and other interesting features related to both architectural marks and natural or anthropic events. One of the main elements of the method is the analysis of residual maps, obtained by computing the differences between the point coordinates of the facade and reference fit planes. The obtained results, based on both radiometric and geometrical analysis, are used to provide a reasonable hypothesis as to the original configuration of the studied building, while taking into account the available historical information about the constructive phases of the building.

[1]  Paolo Fancelli,et al.  Il restauro dei monumenti , 1998 .

[2]  Giovanni Carbonara,et al.  Trattato di restauro architettonico , 1996 .

[3]  Maurice Murphy,et al.  IDENTIFICATION OF HISTORIC METHODS OF CONSTRUCTION USING DIGITAL PHOTOGRAMMETRY AND LASER SCANNING , 2005 .

[4]  Tara C. Hutchinson,et al.  Improved image analysis for evaluating concrete damage , 2006 .

[5]  Yahya Alshawabkeh,et al.  Developing a documentation system for desert palaces in Jordan using 3D laser scanning and digital photogrammetry , 2009 .

[6]  Giordano Teza,et al.  Terrestrial Laser Scanner Resolution: Numerical Simulations and Experiments on Spatial Sampling Optimization , 2011, Remote. Sens..

[7]  Michael Forde,et al.  Application of infrared thermography to the non-destructive testing of concrete and masonry bridges , 2003 .

[8]  Hojjat Adeli,et al.  A New Approach for Health Monitoring of Structures: Terrestrial Laser Scanning , 2007, Comput. Aided Civ. Infrastructure Eng..

[9]  Gabriele Guidi,et al.  A Multi-Resolution Methodology for the 3D Modeling of Large and Complex Archeological Areas , 2009 .

[10]  Camino de Vera,et al.  INTEGRATION OF 3D LASER SCANNING, PHOTOGRAMMETRY AND THERMOGRAPHY TO RECORD ARCHITECTURAL MONUMENTS , 2009 .

[11]  F. Loddo,et al.  The first terrestrial laser scanner application over Vesuvius: High resolution model of a volcano crater , 2007 .

[12]  Enzo Boschi,et al.  Laser scanning the Garisenda and Asinelli towers in Bologna (Italy): Detailed deformation patterns of two ancient leaning buildings , 2011 .