Description of the data path
PIKE Technical Manual
V5.0.0
145
After the lens has been focused again the image below will be seen, but now
with a considerably more uniform gradient.
Note
Configuration and storing non-volatile
To configure this feature in an advanced register: See
153: Advanced register: Shading
To store shading image data into
non-volatile memory
: See
Non-volatile memory operations
Note
•
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.
Note
•
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.
•
Shading correction can be combined with the image
mirror and gamma functionality.
•
Changing binning modes involves the generation of
new shading reference images due to a change in the
image size.
