Microscan QX Hawk User Manual page 72

Camera Setup
CCD (SXGA) Window of Interest
The active pixel area of the image sensor is defined as the "Window of Interest" (WOI).
This allows the user to select an area in the Field of View that the desired symbol will be
located. The programmable window of interest is useful for increasing decode speed,
improving threshold, selecting desired symbol from multiple symbols in FOV. The user
provides the upper-left pixel location and the size in both rows and columns to define the
Window of Interest.
Important Notes:
The column width value is required to be a modulus 32 value, so regardless of the column
width setting that is configured the actual column width will be decreased (if required) to
a modulus 32 value. For example a column width value of 632 would actually be 608. A
user request of this setting would still return 632.
The column pointer is required to be an even value, so regardless of the column pointer
setting that is configured the actual column pointer will be decreased (if required) to an
even value. For example a column pointer value of 101 would actually be 100. A user
request of this setting would still return 101.
Top
Defines the row position of the upper-left starting point of the image window. An Increase
in this value will cause an increase in frame rate at a resolution of 46 microseconds (row
period). If this value is changed and the resulting combination of row pointer plus row
depth exceeds the maximum allowed, the row depth will be decreased to an acceptable
value.
Left
Defines the column position of the upper-left starting point of the image window. If this
value is changed and the resulting combination of column pointer plus column width
exceeds the maximum allowed, the column width will be decreased to an acceptable value.
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QX Hawk Industrial Imager User Manual