The spectra measured by the multispectral camera can be reprocessed to eliminate the influence of an old yellowed varnish. A database of artificially aged varnishes allows an algorithm to simulate and calculate colors without the varnish. The result does not give the original colors but the colors underlying the varnish, which have deteriorated over time.

Linear Polarizerthorlabs

The multispectral camera provides high resolution images. The definition (DPI) depends on the dimensions of the work to be digitized.Mona Lisa scan in progress List of images produced :

Circular vslinear polarizer

1650 L.A.M. images of the Mona LisaThe L.A.M. uses the 13 images of the MultiSpectral Camera. In addition to high-resolution images, this technique generates 1650 images calculated with mathematical algorithms based on the laws of light / matter interaction. These images make it possible to highlight underlying information that is invisible to the naked eye and sometimes invisible to Infrared. It is the essential complement to traditional scientific imaging methods: X-ray, Infrared 1700/2500 nm, UV fluorescence etc.

The spectra measured by the multispectral camera make it possible to identify certain pigments. It is a complement to traditional studies (XRF, Micro Raman, etc.). Software searches the pigment database for combinations of spectra that approximate the spectra measured on the board. The identification of pigments is an essential contribution in the authentication protocol of an artwork.