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This utility is used to annotate images with the location and numbers of the license plates. These annotated images can be used to train the OpenALPR algorithm to recognize license plates accurately.

The utility is a QT graphical user interface written in C++:

Download an installer for Windows, Ubuntu Linux, or Mac OS from the Releases tab. Alternatively, you can compile the tool yourself usingqmake orcmake. Eg. on a Fedora-based system (assuming that the required tools are already installed):

$ git clone https://github.com/openalpr/plate_tagger.git$cd plate_tagger$ mkdir build&&cd build$ cmake ..$ make$ ./openalpr_tagger