Steps To Setup Area Of Interest; Rules For Setting Areas Of Interest - Dalsa Linea HS Series User Manual

Steps to Setup Area of Interest

1. Plan your AOIs.
2. Stop acquisition, using the AcquisitionStop feature. In CamExpert this feature is available in
the Acquisition and Transfer Control category:
The AcquisitionStatus feature displays the current status as Acquiring or Not Acquiring.
3. Set the number of AOIs using the AOI Count Horizontal (multipleROICount) feature. In
CamExpert AOI related features are available in the Image Format category:
4. Select the first AOI and set the offset and width.
5. If the other AOIs are large you may need to select them first and reduce their widths.
6. Repeat for each AOI in turn.
7. Start acquisition, using the AcquisitionStart feature.

Rules for Setting Areas of Interest

The rules are dictated by how image data is organized for transmission over the available CLHS
data lanes. The camera / XML will enforce these rules, truncating entered values where necessary.
Note: AOI parameters can only be changed when image transfer to the frame
grabber is stopped. Refer to the Acquisition and Transfer Control Category in the
appendix for details on stopping and starting the acquisition.
• Acquisition must be stopped to change the AOI configuration.
• 1-4 AOIs can be selected.
• Minimum width is 96 pixels per AOI.
Minimum total of all AOI widths summed together must be at least 1,024.
o
• Maximum width of all AOI widths summed together must be no more than = 16,384.
Maximum 8k bytes per CLHS lane.
o
• AOI width step size is 32 pixels.
• The offset of each AOI may be 0 to (16,384 – 96 = 16,288).
Overlapping AOIs are allowed.
o
• Offset and width for individual AOI's will "push" one another.
For example, if AOI has offset 0, width 16,384, and the offset is changed to 4096,
o
then the width will be "pushed" to 12,288.
AOI's only affect one another by limiting the maximum width.
o
• AOIs are concatenated together in numerical order and sent to the frame grabber starting
at column zero. If the AOI count is reduced to less than the current AOI count, the AOI
selector will be changed to the largest of the new AOI count available.
78 • Camera Performance and Features Linea HS Series Camera User's Manual