Using the Go language bindings I wrote for the RKNN-Toolkit, I have put together a demo for Automatic License Plate Recognition (ALPR) which makes use of a YOLOv8n model for license plate detection and LPRNet for recognition of the text on the license plate.
The LPRNet model used is from Rockchips Model Zoo so is trained on Chinese license plates, however it would be easy to swap this model out for your own LPRNet trained on a different countries dataset.