Guppy PRO Technical Manual
V4.1.2
89
If the image capture is active (e.g.
IsoEnable
set in register 614h), the frames
used by the camera for white balance are also output on the 1394 bus. Any
previously active image capture is restarted after the completion of white
balance.
The following flow diagram illustrates the
one-push white balance
sequence.
Finally, the calculated correction values can be read from the WHITE_BALANCE
register 80Ch.
Auto white balance (AWB)
The
auto white balance
feature continuously optimizes the color
characteristics of the image. For the white balance algorithm the whole image
or a subset of it is used.
Note
The following ancillary conditions should be observed for
successful white balance:
•
There are no stringent or special requirements on the
image content, it requires only the presence of
monochrome pixels in the image.
Figure 35:
One-push white balance
sequence
Pause image
capture
Capture image
via one-shot
Calculate and
set correction
values
Restart image
capture if
necessary
Repeat steps
nine times
