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A CASE-STUDY ON THE USE OF MIDDLE FORMAT CAMERA HASSELBLAD H6D-100C IN FRESCOS ANALYSIS

Jakub Markiewicz

Abstract

The aim of this study is to validate the possibility of using the 100 Megapixels Hasselblad Hd-6 middle format camera and Agisoft PhotoScan in the Cultural Heritage documentation. The subject of this investigations is the fresco decoration in one of the rooms in the Bieli?ski Palace in Otwock Wielki, near Warsaw (Poland). The frescos cover the walls of a room of 11,5 ? 5,5 m in one of the wings of the palace. The results of the data analysis convincingly show that a higher resolution can be obtained using a Hasselblad which, additionally, gives better results caching the details of the documented object. This high detail of the documentation is possible to achieve when a more precise reference system is implemented and a higher resolution on image pyramid is chosen. Hence, one of the conclusions of our investigation is that a standard geodetic reference system might not be sufficient when a high detail documentation is in demand. This problem, of the choice of an appropriate reference system requires further studies. For the documentation of frescos, the use of full frame cameras and the method presented in the paper has numerous advantages. First of all it is an efficient way of documenting different aspects wall frescos, and it provides not only means for documenting, but also a basis for further analysis, that would be otherwise unavailable. All of these are in turn important factors in the investigation into the objects past and significance of historical objects. Despite the obvious drawbacks, that is the time and high-speed computers necessary to its proper application, the discussed method remains a valuable tool for scholars and curators dealing with frescoes and architecture.

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DOI resolver: doi.org/10.5593/sgem2018/2.3/s10.001

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