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VNP series
8
Camera Features
8.1
Area Of Interest (AOI)
The Area of Interest (AOI) feature allows you to specify a portion of the sensor array. You can acquire only the
frame data from the specified portion of the sensor array while preserving the same quality as you acquire a
frame from the entire sensor array. AOI is determined as the overlapping area of two areas when designating
start point and end point in horizontal and vertical direction as shown in figure below. Start point and End point
mean the starting and end of the AOI. According to characteristics of the sensor structure, readout of the image
will be proceeded at the top and bottom simultaneously. If the Channel mode is set to 4 Tap and Vertical AOI is
applied, V End will be ignored because V End is defined by V Start. The actual V End will be applied according
to the following formula:
V End = (VSIZE – V Start) - 1
The narrower Vertical AOI is designated, the faster the frame speed will be. However Horizontal AOI does not
affect the frame speed. For more information about AOI parameter settings, see “sha” and “sva” command on
Command List.
(HSIZE - 1, 0)
(0, 0)
Horizontal AOI
V Start
Vertical
Area Of Interest
AOI
V End
(0, VSIZE - 1)
(HSIZE - 1, VSIZE - 1)
H Start
H End
Figure 8.1
Area of Interest
The AOI values (H × V) may vary depending on the type of frame grabber.
For technical assistance, contact to your local dealer or the manufacturer.
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