UVVL dataset of Lovatelli Venus 109608

The Lovatelli Venus, named after its discoverer, was unearthed in 1873 in a niche in the peristyle of the House of Diomedes I, 12-17 in Pompeii. The dating of the sculpture goes back to the Julian era. Her hair is gathered into two braids that part from the centre of her forehead to gather into a bun. She wears both a light chiton and a heavy himation that wraps around her hips and coils around her left arm. She holds an apple in her left hand, a clear reference to the Judgment of Paris. Sinuous and nude down to her legs, she displays visible traces of polychromy and holes in her earlobes, which, following the fashion of the time, likely held golden earrings, accompanied by bracelets on her wrists. While the chiton was certainly white, the himation shows large areas of yellow alternating with the green of the peplos. On the left side, the goddess leans against an anthropomorphic-style column decorated on the front with an archaizing idol. 

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.