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Camera output Corrected for Corrected for Corrected for
spatial ambient stray "pigment¬
inhomogeneities light binder"
of light source interaction
(Flat fielding)
. Camera output file — Visible-induced IR luminescence image
. ICC profile for conversion from RAW (contained within the image file)
. Image of uniform reflective board under experimental conditions for flat fielding
- Image of Spectralon diffuse reflectance grey scale or any number of Spectralon diffuse reflectance
standards as available (included as part of the image to be calibrated or another image taken with
the same camera and lighting conditions)
Additional requirements from other workflows:
» Calibrated visible-reflected image (including a Spectralon diffuse reflectance grey scale or any
number of Spectralon diffuse reflectance standards as available)
» Corrected |R-reflected image (including a Spectralon diffuse reflectance grey scale or any number
of Spectralon diffuse reflectance standards as available)
All must be taken under identical illumination conditions and geometry
Figure 1-28. Workflow and post-processing requirements for visible-induced infrared luminescence images - Wall painting fragment from the British Museum
(Winged youth from the Tomb of the Nasonii, 1883,0505.5).