Microscan Quadrus EZ, Руководство пользователя, Страница: 217 / 366

Quadrus EZ Reader User’s Manual
9-9
Camera Setup
Region of Interest by ESP
1. From the Camera menu, click the ROI
tab to bring up Region of Interest.
If you haven’t already captured an
image, click the
Capture and Decode
button to decode the present image. If
successful, the Good Read indicator
on the
ROI tab will be green and the
symbol will appear in the pane below.
Note: You can resize the image by
clicking and dragging the ESP window
from the lower right corner. This is useful
where very small symbols are being
read.
2. Click and drag your cursor over the
symbol that you want to isolate for
reading.
Notice that the surrounding area goes
black.
You can use the handles on the image
area that you have just drawn to resize
the region of interest. You can also
click on the center of the region of
interest and move it about.
3. Test the new settings in Read Rate
mode.
Note: to remove the region of interest, click
the Reset button or just click anywhere in
the ROI pane.
Note that all pixels not in the ROI are
defined as black.
Because the Quadrus EZ has much less
processing to do in a smaller window, read
rates typically increase dramatically. One
possible downside is that the chance of missing a symbol increases with the smaller window.
Always verify that your ROI will be large enough to allow for any random movement of
symbols in your FOV.