ALLIED Vision Technologies Guppy F-503 - Manual (Page 122)

Description of the data path
GUPPY Technical Manual V7.1.0
122
The following drawing illustrates the AUTOFNC_AOI settings in greater detail.
The algorithm is based on the assumption that the R-G-B component sums of
the samples shall be equal, i.e., it assumes that the mean of the sampled grid
pixels is to be monochrome.
Visualization of the AUTOFNC_AOI is carried out with the help of the graphics
overlay (see: block diagram) function of the camera. This area is highlighted
when the Show work area bit is set high.
Manual gain
As shown in:
• Figure 63: Block diagram of AFE (Source: Analog Devices) on page 115
• Figure 64: Signal path of MT9V022 (Guppy F-036 with CMOS sensor) on
page 116
• Figure 65: Signal path of MT9P031 (Guppy F-503 with CMOS sensor) on
page 116
... all cameras are equipped with a gain setting, allowing the gain to be man-
ually adjusted on the fly by means of a simple command register write.
Figure 68: AUTOFNC_AOI positioning
Note The algorithm will try to create an uncolored image when
looking at an area that is completely colored with auto white
balance ON.
AF
_ARE
A_S
IZE: Hei
gh
t:
n x
4
AOI
: Y-
siz
e
AOI: X-size
AF_AREA_SIZE: Width: n x 4
0,0
AF_AREA_POSITION: Left,Top
Sampling grid for Auto-Function