The paper is devoted to the investigation of the possibility of applying laser 3D scanning technology for monitoring the state of preservation of historical and cultural monuments exhibited in the open air. The experimental studies on the development of technology for monitoring sculptural monuments of stone have been carried out in the work. The object of the study was the marble sculpture of the mourner at the monument to A. Ya. Okhotnikov in the Necropolis of the XVIII century of the Alexander Nevsky Monastery in St. Petersburg. For scanning, the Konica Minolta Vi-9i scanner was used, which ensures the accuracy of measurements of the relief of the investigated surface at a level of 50…100 μm. The resulting set of scans was processed using a specialized computer program RapidForm XOR3. The sculpture was scanned twice: before and after the completion of planned works for its restoration, which allowed modeling the change in the microrelief of its surface. Studies have shown that laser 3D scanning can be recommended for practical museum work as a highly accurate and informative method of monitoring sculptural monuments. One of the most accurate criteria for changing the state of preservation of monuments as a result of this type of monitoring is the determination of the area of destruction of their surface. Another criterion by which it is also possible to assess the degree of destruction of the monument during the control interval of time is the length of cracks and chips on its surface.

Authors: V. A. Parfenov, O. V. Frank-Kamenetskaya, I. A. Leonova, S. L. Moshkina, E. E. Moshnikov

Direction: Instrument Engineering and Information-Measurement Technologies

Keywords: Laser 3D-scanning, computer 3D-model, monitoring, sculpture from marble, historical and cultural monuments

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