ANPR-evalsys

A prototype for evaluating license plate recognition engines.

Getting Started

Prerequisites

• uv
• Python 3.10+

Install dependencies

uv sync

Run the application

inside /src folder:

uv run uvicorn app.main:app --reload

Access the API documentation

http://localhost:8000/docs

Architecture

Image -> (Detection) -> Crop -> Preprocessing -> OCR -> Postprocessing -> Result API

API Endpoints

• POST /recognize: Accepts an uploaded image and returns the evaluation results.

Example via OpenAPI docs:

Metrics

• Exact plate accuracy
• Character accuracy
• Latency
• Detection success rate

Current evaluation results on the 10 test images:

Dataset

• Germany License Plate Dataset: Preview https://www.kaggle.com/datasets/unidpro/germany-license-plate-dataset?resource=download

Stack

• Python
• FastAPI
• OpenCV
• EasyOCR