Allied Vision Technologies F-131B, Technical Manual, Page: 73 / 183

Description of the data path
The following pictures illustrate the sequence of commands for generating the shading image.
The correction sequence controlled via “Directcontrol” uses the average of 16 frames (10H) to
calculate the correction frame.
The top picture shows the input image (with lens out of focus). The bottom picture shows the
ading corrected output image (unfocused lens). sh
Figure 39: Gen n of shading image
The calculation f shading data is alwa ut at the curre olu . If the
Area of Interest (AOI) is later larger
calculated, none of the pixels lying outside are corrected.
For Format_7 i is advisable to generat
g image in s
format. This ensures that any smaller AOI’s are
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 generation is completed.
eratio
o ys carried o
than the window in which correction data was
nt res tion setting
t e the shadin
completely covered by the shading correction.
the large t displayable frame
MARLIN Technical Manual
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