Measuring Stradivari violin “Cremonese” (1715) by 3D Modeling

Conference Paper · October 2016with148 Reads

Conference: Conference: 2nd IMEKO International Conference of Metrology of Archaeology and Cultural Heritage (MetroArcheo 2016), At Torino, Volume: pp 29-33
Piercarlo Dondi at University of Pavia
  • 12.09
  • University of Pavia
Luca Lombardi at University of Pavia
  • 24.3
  • University of Pavia
Marco Malagodi at University of Pavia
  • 28.62
  • University of Pavia
Abstract
Acquiring precise measurements of historical violins is an important task both for researchers and violin makers. Up to now, the measures are taken manually using a caliber, with limitations in the repeatability, since the access to these instruments is restricted and the contact with the caliber has to be limited to the bare essential for avoiding accidental damages to superficial varnishes. In this work we propose a new protocol for the acquisition and creation of high quality 3D models of violins suitable for taking precise measurements. The procedure was applied to Stradivari "Cremonese" (1715) kept in "Museo del Violino" in Cremona. The quality of the result was validated comparing the measures taken on the 3D mesh to those ones taken by the curator of the museum on the original instrument. As a test case the data are then used to confirm the use of the "G" mould for the construction of this violin.

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  • ... However, the digitalization of a historical violin is a difficult process: the complex morphology and the presence of a great number of small details require a very high accuracy and degrees of freedom during the scanning phase[6]; moreover, the highly reflective varnishes complicates the use of some models of laser scanners or other scanning technologies, such as photogrammetry[7]. In one of our previous works, presented at MetroArcheo2016[8], we discussed a protocol for the creation of accurate 3D models of historical violins using a laser scanner, and we tested it on the famous Antonio Stradivari " Cremonese " (1715). This article extends that work, the main improvements involve: I) the acquisition of other five important instruments of the 17 th – 18 th centuries held in " Museo del Violino " of Cremona (Italy); II) a more complete assessment of the accuracy of the models; III) a set of comparisons between the shapes of the instruments. ...
    ... However, the digitalization of a historical violin is a difficult process: the complex morphology and the presence of a great number of small details require a very high accuracy and degrees of freedom during the scanning phase[6]; moreover, the highly reflective varnishes complicates the use of some models of laser scanners or other scanning technologies, such as photogrammetry[7]. In one of our previous works, presented at MetroArcheo2016[8], we discussed a protocol for the creation of accurate 3D models of historical violins using a laser scanner, and we tested it on the famous ...
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