Area Of Interest (Aoi) - Basler A101f User Manual

Operation and Features

3.8 Area of Interest (AOI)

The area of interest (AOI) feature allows you to specify a portion of the CCD array and during
operation, only the pixel information from the specified portion of the array is transferred out of the
camera.
The area of interest is referenced to the top left corner of the CCD array. The top left corner is
designated as column 0 and row 0 as shown in Figure 3-12.
The location and size of the area of interest is defined by declaring a left-most column, a width, a
top row and a height. Reference position is the top left corner of the image. For example, suppose
that you specify the left column as 10, the width as 16, the top row as 4 and the height as 10. The
area of the array that is bounded by these settings is shown in Figure 3-12.
The camera will only transmit pixel data from within the area defined by your settings. Information
from the pixels outside of the area of interest is discarded.
Column
0 1 2 3
Row 0
Starting
Row Row 1
Row 2
Row 3
Row 4
Row 5
Row 6
Row 7
Height
Row 8
in
Rows
Row 9
Row 10
Row 11
Row 12
Row 13
Row 14
Row 14
Row 15
Row 17
Row 18
Row 19
Figure 3-12: Area of Interest
The AOI feature is enabled by setting the CUR_V_FORMAT control register to 7 and the
CUR_V_MODE control register to 0. The location of the area of interest is defined by setting a
value for the "left" field and a value for the "top" field within the IMAGE_POSITION control register
that has been established for Format_7, Mode_0. The size of the area of interest is defined by
setting a value for the "width" field and a value for the "height" field within the IMAGE_SIZE control
register that has been established for Format_7, Mode_0.
To use the entire CCD array on the A101
value for "width" to 1300 and the value for "height" to 1030.
3-14
DRAFT
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Starting Column
Width in Columns
, set the value for "left" to 0, the value for "top" to 0, the
f
The camera will
only transmit
the pixel data
from this area.
f
BASLER A101