GV-LPR License Plate Recognition User Manual - GeoVision

[I/O Detection] is normally used for car park or entrance.
Chapter 3 System Configuration
[Motion Detection] is normally used on freeway recognition where I/O detection devices are not allowed to be
installed.
[Hotkey] Set up the hotkey for the manual recognition. Move the cursor to the HotKey field, press the desired
on key the keyboard. The keys from [F1] to [F12] or the combination of [Ctrl] and other keys can be used as
HotKeys.
[Recognition Result From] There are 1 picture, 3 pictures and 5 pictures options to be selected. It is the
number of images to be captured to be recognized for each trigger. It is used for [Manual Detection] and [I/O
Detection] mode. The greater value provides more accuracy, and more CPU resource is needed.
[Setup Recognition Region] You may add or subtract the region where the license plate is to be recognized.
License plates outside this region will not be recognized. To add or subtract the region, please drag your
mouse in the [Recognition Region Setup] area and confirm with the left button on the mouse.
[To synchronize detection region between recognition and motion] You can set up the same detection region
for both Recognition Region and Motion Detection Region.
[Matching Mode] You may select the tolerance of comparison while performing matching the recognized
result of the license plate with the registered database. There are 4 types of modes: [All Characters Match], [1
Character Mismatch], [2 Characters Mismatch] and [3 Characters Mismatch].
[To replace the recognized plate with a fuzzy match from the database] If the recognized plate is similar to
that stored in database, you can replace it with the database information.
Figure 3-18
Add Region
Subtract Region
Empty Region
Default Region
Region Color
29