Automatic White Balance - AVT Pike Technical Manual

Description of the data path
Finally, the calculated correction values can be read from the
WHITE_BALANCE register 80Ch.

Automatic white balance

The auto white balance feature continuously optimizes the color characteris-
tics of the image.
For the white balance algorithm the whole image or a subset of it is used.
Note Configuration
To set position and size of the control area
(Auto_Function_AOI) in an advanced register: see
Advanced register: Autofunction AOI
AUTOFNC_AOI affects the auto shutter, auto gain and auto white balance fea-
tures and is independent of the Format7 AOI settings. If this feature is
switched off the work area position and size will follow the current active
image size.
Within this area, the R-G-B component values of the samples are added and
used as actual values for the feedback.
The following drawing illustrates the AUTOFNC_AOI settings in greater detail.
0,0
AF_AREA_POSITION: Left,Top
Sampling grid for Auto-Function
AF_AREA_SIZE: Width: n x 4
Figure 54: AUTOFNC_AOI positioning
AOI: X-size
Table 139:
on page 287.
PIKE Technical Manual V4.1.0
101