The PRISMS 10 band reflectance Spectral Imaging system allows rapid collection of reflectance spectra of large collections and large objects / monuments / built heritage. The main body of the device consists of a sCMOS camera, and a motorised filter wheel equipped with 10 interference filters of 40nm bandwidth in wavelength steps from 400nm to 850nm in 50nm intervals. The instrument optics are modular depending on the required spatial resolution and working distance. Here we focus on the set up that gives a working distance of 1.5-20m and a maximum spatial resolution of 60 µrads.​ In typical data collection, the system is placed on a computer controlled motorised pan/tilt stage that allows for convenient imaging over a large area from one position on the ground without the need to move the instrument, and enabling remote spectral imaging of regions at inaccessible heights.​ In indoor and low light environments a tungsten halogen light source is used to provide sufficient illumination. In situations requiring remote sensing, a tungsten halogen light with long-range projection capability is used to provide sufficient illumination at long distances. The long-range light source is fixed to an additional computer motorised pan/tilt stage for synchronised automated scanning.

Dataset/Data package (images, spectra, other)

Noncontact (no physical contact)
Nondestructive (no permanent damage or alteration)
Noninvasive (no physical alteration)

macro
large area