RMV Operations Manual Revision Copyright illunis LLC, 2014
Page 83
5.6: Image Processing
Flat Field Correction Continued
FFCC Data offset
Camera
Center pixel
Offset
RMV-16000
2436
91
RMV-11002
59
2002
RMV-4020/4011
70
1023
RMV-2020/2001
46
799
RMV-2093/HDTV
61
959
RMV-340
66
319
The FFC circuit uses an internal (LVAL) signal within the camera to determine
the starting column to apply the correction. The correction table is offset from image
data by a certain number of pixels. so that the optical black area can be corrected.
The correction data offset does not change with LVAL start and is constant with
the image raster. This data offset must be applied during the creation of the offset ta-
ble. To create your own alignment test file simply create a FFC file, then edit the center
pixel gain value to be 32000. A white line will appear at the center point.
Note that the leftmost number in the FFC file data is not used by the loader and
can be used for user reference of offset data.
0, 4096
1, 4096
2, 4096
3, 4096
4, 4096
…
2060, 4096
2061, 32000
2062, 4096
…
8187, 4096
8188, 4096
8189, 4096
8190, 4096
8191, 4096
Example RMV-11000 FFC
Test File with a mark at the
optical center of the table
(Some values omitted due to
space constraints)
0, 4096
1, 4096
2, 4096
…
58, 4096
59, 6000 <- Start
60, 5999
…
2060, 4096
2061, 4096 <- Center
2062, 4096
…
8189, 4096
8190, 4096
8191, 4096 <- EOF
Example RMV-11000 FFC
Test File with offset data
(Some values omitted due to
space constraints)