Microscan Quadrus Verifier, User Manual

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Quadrus Verifier User’s Manual
11-11
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.
Notice that all pixels not in the ROI are defined as black.
Because the Quadrus Verifier 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.
Region of Interest View