Short Description
The Hyperspectral Imaging (HSI) system Resonon enables to record spectral data (reflectance vs wavelength) of large objects in the 400-1700 nm range (Vis/NIR). The system includes two HSI cameras - Pika XC2 (400-1000 nm, 447 spectral channels, 1600 pixels) and Pika IR+ (900-1700 nm, 336 spectral channels, 640 pixels) - which can be mounted on a translation stage with 89 cm maximum travel distance. The lighting unit (4 halogen lamps) is also attached to the stage below the respective camera. Each pixel of the resulting HSI image contains a reflectance spectrum, which can be extracted and compared with reference spectra from databases. This allows to identify or characterize the colorants present on the examined object, e.g. a painting. Furthermore, areas with similar spectral characteristics can be visualized (imaging). Moreover, specific software allows the visualization of individual spectral channels as well as a statistical analysis (Principal Component Analysis) of the data. The file size depends on the resolution of the respective camera (1600 pixels or 640 pixels) and the chosen travel distance.
Contact Person
Dr. Wilfried Vetter
Research Services
The Institute for Natural Sciences and Technology in the Arts (INTK) and the Core Facility "Centre for Material Sciences in Art and Conservation (ZMKK)" are central facilities of the Academy of Fine Arts Vienna for the natural scientific (material) analysis of works of art. The facilities support members of the Academy of Fine Arts Vienna or other research institutions, museums, libraries, archives, etc. in the realisation of joint projects within the framework of research funding or contract research and also offers services (third-party funding) for external parties.
The focus is on scientific material analyses of artworks and archive materials using FTIR, Raman, XRF, UV-Vis, HSI, RSI, ESEM (EDX), Py-GC/MS, digital X-ray radiography and photo documentation (Vis, UV, IR, IRR), microscopy, chambers for accelerated ageing of samples.
Methods & Expertise for Research Infrastructure
Hyperspectral Imaging (HSI) material analyses on paintings, graphic objects, manuscripts, etc.
Visualization of material distributions (imaging). Evaluation by using comprehensive spectra databases for the identification of organic and inorganic pigments.
In general, the investigations are carried out by employees of the Institute for Natural Sciences and Technology in the Arts (INTK) / Centre for Materials Science in Art and Conservation (ZMKK) of the Academy of Fine Arts Vienna. However, it is also possible for members of other universities with relevant training and under certain conditions to use the equipment to carry out analyses within research projects after instruction and successful completion of a course.