Advanced Settings - Image Engineering camSPECS User Manual

Advanced settings

4.5.1
1. The software detects the Color Filter Array (CFA) automatically by default. Choose the manual option to
set the color filter array manually. If a CFA is not a standard pattern, e.g., unique cameras without a filter
for one channel, C (Clear) can be chosen. In this case, all four channels are measured separately and
displayed as four different channels without any assignment to a color.
2. This option is the default for the display and export of the curves. Both green channels are averaged.
3. With this option, all four channels of the CFA are displayed and exported as result files separately.
4. Use a decimal comma in the resulting text and XML files.
5. This option interpolates the spectral response data to increments of 5 nm. The default value is 10 nm if
this option is not selected. 5 nm graded values are necessary for further processing in the modules
Validation and CCM calculation.
6. Size of the ROI for measuring digital values in every filter to the diameter of the filter. The default value is
50 %. Higher values may result in inaccurate results due to vignetting artifacts of the filters near the
borders. The minimum size is limited by the number of pixels inside the ROI; more than 100 pixels are
needed for statistical significance. If the number falls below this value, the program gives a warning.
7. Select the dcraw application (see note below). By default, the dcraw version delivered with the software
is used and located in the directory "app" inside the camSPECS program directory. For raw image
processing, camSPECS uses dcraw to convert standard camera raw files to TIFF files, and the
converted images are saved to a sub-directory named 'converted.'
Image Engineering
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