SW-2000M-CL-65
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individually. The correction typically uses a 2-point linear method, where both the dark and
bright level pixel responses are equalized making it possible to have uniform response on all
light levels within the operating range of the camera. This would in fact be a complete, single
routine to perform DSNU, PRNU and Shading Corrections all at the same time, but the
corrections are separated in this implementation. DSNU correction is preset at the factory.
Shading correction is replaced by FFC, which operates assuming a fixed dark reference level
and includes the PRNU correction.
The FFC unit of SW-2000M-CL-65 offers the possibility to scale the pixel values by factors that
are calculated by imaging a calibration target in order to produce a uniform (flat) response
under the same conditions as where the calibration routine was run. A constant value (same as
DSNU target value) is used as the dark reference. Bright references are taken by averaging the
lines that were imaged from the calibration target.
5.7
Region of interest, ROI
This block can be used to select up to four sections of pixels to be used as one combined line of
pixels. The purpose is to reduce the amount of data and to remove unnecessary regions.
5.8
Binning
Neighboring pixels can be digitally added or averaged as pairs. The resulting larger pixels are
then sent out as one. The resolution as well as the number of pixels will be half. The goal is to
have larger pixel area either to increase the response or to reduce noise.
5.9
Reversed readout direction
This function enables reading of the pixel values in correct order in cases, where it is not
practical to install the camera to follow the intended imaging direction.
