Stranica 132 [132]
cn A B 7
2) Images are opened by dragging them into the appropriate slot or by left-clicking on the
thumbnail, clicking “Replace From File”, and selecting the image required.
(a) Load an image containing the calibration “7 \lectnical Imaging| bn Cp fsb borhan
targets into the top box on the ‘targets” input | tinear1 | markup1 | viscalb1 ) uvicalib1 , align1 specden1_ falsecolour1 | uvistray1 | uvkmt
thumbnail (Figure 3-21). This image will © A> Viele igherehectnce "3
be used to generate the calibration and C[a2| [label | visbie refectance
can be the image you want to calibrate oD — densidad
. . e image
or another image taken with the same
Camera and under the same lighting STT vata we caer eee a
conditions. It can remain in place for C) fate
batch-processing (see later) as long as
the camera or lighting conditions remain
Pair_flatfield NULL (label ++ " with calibration targets")
€ object label | visible reflectance of object
(b) If available, load an image of a uniform ~ [use fatiot!) © Flatfeki visble reflectance of object Image)
: S| flatfield
reflective board (under the same :
experimental conditions of the top - :
. . . . Pair_flatfield (targets.image) (label ++ " of object")
image) for flat fielding into the bottom | Par Joad "visble reflectance"
box on the “targets” thumbnail and Figure 3-21
check the option to "Flatfield visible
reflectance with calibration targets
image" (Figure 3-21). If this is not
available leave this option unchecked.
(c) Load the image(s) you want to calibrate
into the top box on the “object” Ú *F:\ Technical Imaging\ John Cupitt\zip files\\bm2\bm-workspaces2.ws - input 1
Eile Edit View Toolkits Help
thumbnail (Figure 3-22). This can be the Frew | near | marty viscalib1 | uvicalib1 align | specden1 ) falsecolour1 uvistrayl | uvikm1
same image as above or another frame 3 A> vloble-ightrefctance x
(e.g. another frame in a series or a “twin” = * | nll Sea
image not containing the calibration ve .—
targets, as described in Chapter 2 and
shown in Figure 3-23) taken with the 0/ use_flatfield | 7] Flatfield visible reflectance with calibration targets image
Same camera and under the same |" iit
lighting conditions.
Pair_flatfield NULL (label ++ " with calibration targets")
Ci object label | visible reflectance of object
(d) If available, load an image of a uniform 2 mage
reflective board under the same
experimental conditions of the image for ~ | wee ott [d Ftot vob refectanee of pect na
flat fielding into the bottom box on the . 7 Ag, IR
"object" thumbnail (Figure 3-22) and par fatotd (ure mage) (bel ert " otobjact)
check the option to “Flatfield visible ( ) Parr. Jozd "visible reflectance”
reflectance of object image". If this is not Figure 3-22
available leave this option unchecked
(as in Figure 3-23).
Version No. 1.0 124 Date : 14/10/2013