Stranica 124 [124]
Table 3-1. Description of the image corrections/transformations which must be applied for each type
of image correction and the workflow developed to carry it out.
IMAGE CORRECTIONS / TRANSFORMATIONS WORKFLOW
1) Reflected Images (UV-VIS-IR)
i. VIS images
e Spatial inhomogeneities of light source
e Spectral density of the light source and non-linear VIS
camera response
e Camera response (colour calibration for visible¬
reflected images)
ii. IRR-UVR images:
e Spatial inhomogeneities of radiation source
e Spectral density of the radiation source and non-linear
camera response IRR/UVR/false-colour
e Image registration (for the creation of false colour
images)
e Generation of false colour images
2) Photo-induced Luminescence Images (UVL-VIVL-VIL)
i. VIL images
e Spatial inhomogeneities of light source VIL
e Subtraction of ambient stray radiation
ii. UVL images
e Spatial inhomogeneities of radiation source
e Subtraction of ambient stray radiation UVL
e Correction for camera response/camera calibration
e Pigment-binder interaction
ili. VIVL images Not in scope (but could
e As for UVL images? be developed based on
UVL workspace)
Version No. 1.0 116 Date : 14/10/2013