The License Plate Character Segmentation system was developed and tested in Xcode, MAC OS X.
The License Plate Detection system was developed and tested in CLion, MAC OS X. (My implementation of detection is not a robust system. It's purpose is to prove that better slant/skew corrections in the detection step boosts performance in the following character segmentation step.)
My thorough reports in Chinese are uploaded. See Report for License Plate Character Segmentation and Report for License Plate detection. They should really help you understand my system or help you start with computer vision algorithms on license plates even if you do not take a look at my code.