Dalsa Piranha4 User Manual page 72

An example where you would use this feature is in an application that is inspecting several separated
lanes of objects with one camera and the image between the lanes can be ignored.
The AOI feature allows from one to four specific areas of the pixel line to be specified where image data
will be output. Since the AOI feature reduces the amount of data output, this has the additional benefit of
allowing the cameras to operate at higher EXSYNC rates when using base or medium camera link modes.
For example, if the total number of pixels for the specified AOI`s is less than 1 K when using base Camera
Link mode at 85 MHz, the maximum EXSYNC rate can be 100 KHz; versus 20 KHz if all 8K pixels were
output.
Note: The setup of AOI is always with respect to the sensor. Therefore, if you are using the mirroring
mode with AOI, be aware that pixel one will be on the right side of the displayed image.
In order to set up an AOI for the camera:
1. The AOI mode must first be in the off position.
2. Use the AOI Count to select the total number of AOIs desired to a max of 4.
3. To set up each AOI individually use the AOI Selector to point to the AOI to be set up.
4. AOI Offset X is used indicate the starting pixel of the AOI.
5. AOI Width is used to indicate the width of the AOI.
1. Must be off to
set up the AOI.
3. Select area to
set up.
2. Set up the number of
AOI desired to max of 4.
4. Select beginning of
selected area
5. Set up width of
selected area