UVVL dataset of the Venus Anadyomene (6292)

Marble statue of Venus Anadyomene (Venus drying her hair after a bath). Venus (or Aphrodite) in the Roman world was often identified with Isis. Originally found with well-preserved painting and gilding. Found against the west wall of the portico in the south-west corner. Now in Naples Archaeological Museum

ultraviolet induced visible luminescence (UVVL) is a technique belonging to the MBI photographic techniques. This technique is based on characteristic responses of materials to ultraviolet (UV) radiation in the form of remitted luminescence in the visible range. The captured luminescence is used to assist in the general characterization or differentiation of materials such as pigments, coatings, binders, and adhesives and to identify the condition of an object (e.g., to detect restorations). 

A  Canon EOS 5D camera , Canon EFS 18-135mm, F/3.5-5.6 IS lens and a UV/IR cutting filter B+W 486 

Two Quantum T5D-R flashes, with the support of two QF80 Qflash UV/IR Wave Reflectors, provided with B+W 403 UV black filter. 

Each image is acquired in *.RAW format, which contains low-processed data to preserve entirely the information recorded by the image sensor. The image parameters are calibrated with fixed values already tested for this technique in the CHARISMA manual (see also Dyer, J., Verri, G., & Cupitt, J. (2013). 'Multispectral Imaging in Reflectance and Photo-induced Luminescence modes: a User Manual'. Web publication/site, European CHARISMA Project). 

The image acquired is elaborated with a graphics editor program, saved in jpg file and rendered in color image where each material can appear with a different luminescence more or less intense according to the amount and its degradation degree.

f 7.0, time 1/160 s, manual mode, neutral balance, ISO 400 

each material can appear with a different luminescence (e.g. pink for madder, yellow for oils, light green for resins) more or less intense according to the amount and the degradation degree.