ALLIED Vision Technologies Marlin F-201 User Manual
Page 86
Description of the data path
MARLIN Technical Manual V2.4.0
86
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 shading corrected output image (unfocused lens).
Note
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Configuration
To configure this feature in an advanced register: See
108: Advanced register: Shading
Note
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•
The maximum value of GRAB_COUNT depends on the
type of camera and the number of frame buffers that
exist. GRAB_COUNT is also automatically corrected to
the power of two.
•
The SHDG_CTRL register should not be queried at very
short intervals. This is because each query delays the
generation of the shading image. An optimal interval
time is 500 ms.