Description of the data path
MARLIN Technical Manual
V2.4.0
88
After the lens has been focused again the image below will be seen, but now
with a considerably more uniform gradient. This is also made apparent in the
graph on the right.
Note
L
•
The calculation of shading data is always carried out at
the current resolution setting. If the AOI is later larger
than the window in which correction data was calcu-
lated, none of the pixels lying outside are corrected.
•
For Format_7 mode, it is advisable to generate the
shading image in the largest displayable frame format.
This ensures that any smaller AOIs are completely cov-
ered by the shading correction.
•
The automatic generation of shading data can also be
enabled when image capture is already running. The
camera then pauses the running image capture for the
time needed for generation and resumes after genera-
tion is completed.
•
CCD models only
: Shading correction can be combined
with the Image mirror, binning and gamma functional-
ity. Changing binning modes involve the generation of
new shading reference images due to a change in the
image size.
•
CMOS models only
: Using shading correction in combi-
nation with the gamma feature on the CMOS models
may lead to improper results.
Figure 45: Example of shaded image