Image Engineering
Seite
8
von
12
4.3
Spectral sensitivity (iQ-LED) Module
1.
Select the relevant reference
Spectral Sensitivity Database
.
2.
Select the
Number of PCs:
, the number of principal components extracted from the reference
spectral sensitivity database to be used for computing the spectral sensitivity of the test camera.
3.
Check
Smooth Higher Order PC’s
to regularize higher
-
order principal components to reduce noise
artifacts, if present.
4.
Check
Dark Frame Subtraction …
to select a dark capture taken with the camera with the lens cap
on or other means to ensure no light reaches the image
5.
Add Spectra Folder
to select the folder containing the spectral power distribution files for the
desired individual LEDs that were previously saved using the “Export” feature in the separate iQ
-
LED software.
6.
Add Image Folder
to select the folder containing the image capture files of each of the spectra
specified in item 5 above.
7.
Press
Start
to compute the spectral sensitivities of the test camera.
8.
The
Results
panel shows the computed spectral sensitivities for the test camera.
