ABSTRACT

Digital technology for measuring and recording three-dimensional shapes of low morphological complexity (primarily planes), as in the case of architectural buildings, offers a lasting and virtually faithful record that can be used by future researchers. This paper compares the results between two systems. An integrated hybrid system that maximises the data collection capacity of three systems; the laser scanner, photogrammetry and the theodolite (= thealasermetry) and a second system which develops a methodology that fulfils a number of the functions of thealasermetry with less human resources and with less equipment. Co ordination on site and during the post processing period for thealasermetry is indispensable while the mono laser system in study can be used by one individual. The Malta Centre for Restoration has applied both techniques in a survey of a barrel vault. The mono laser system resulted in a more cost-effective and less time consuming project. The system also overcomes the metric error propagation which usually results when using laser scanning in a ‘traditional way’.

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