Autofunction Aoi - Allied Vision Technologies AVT Marlin Technical Manual

Configuration of the camera
Register Name
0xF1000390 AUTOFNC_AOI
0xF1000394 AF_AREA_POSITION
0xF1000398 AF_AREA_SIZE

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 follow the current active image
size.
As a reference it uses a grid of at least 300 samples equally spread over the
area of interest or a fraction of it. The position and size of the control area
(Auto_Function_AOI) can be set via the following advanced registers.
Field
Presence_Inq
---
ShowWorkArea
---
ON_OFF
---
Left
Top
Width
Height
Table 117: Advanced register: Autofunction AOI
The possible increment of the work area position and size is 128 pixel. The
camera automatically adjusts your settings to allowed values.
The possible increment of this work-area position and size is 128 pixels. The
camera automatically adjusts the settings to allowed values (see below for
valid values):
Region
Left, Top
Width, Height
Table 118: Legal values for AF_AREA_SIZE
Due to the fact that the active image size might not be dividable by 128
without a remainder, the auto function AOI work-area size might be greater.
This allows for the positioning of the work-area to be at the bottom of the
active image.
Bit Description
[0] Indicates presence of this
feature (read only)
[1..3] Reserved
[4] Show work area
[5] Reserved
[6] Enable/Disable AOI
[7..31] Reserved
[0..15] Work area position (left
coordinate)
[16..31] Work area position (top
coordinate)
[0..15] Width of work area size
[16..31] Height of work area size
Valid Values
0, 128, 256, 384, 512, 768, 1024...
128, 256, 384, 512, 768, 1024...
MARLIN Technical Manual V2.4.0
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