nomeroff-net: A Jupyter Notebook repository from AzimovS

Nomeroff Net. Automatic numberplate recognition system. Version 0.3.1

Introduction

Nomeroff Net is an opensource python license plate recognition framework based on the application of a convolutional neural network on the Mask_RCNN architecture, and cusomized OCR-module powered by GRU architecture.

The project is now at the initial stage of development, write to us if you are interested in helping us in the formation of a dataset for your country.

Installation

Installation in pip

To install cpu version nomeroff-net via pip, use

pip3 install git+https://github.com/matterport/Mask_RCNN
pip3 install nomeroff-net

To install gpu version nomeroff-net via pip, use

pip3 install git+https://github.com/matterport/Mask_RCNN
pip3 install nomeroff-net-gpu

Installation from Source

Nomeroff Net requires last version of Mask_RCNN,
Python 3.5, 3.6 or 3.7 (if you plan to install the latest tensorflow >=1.13.rc2) and opencv 3.4 or latest

git clone https://github.com/ria-com/nomeroff-net.git
cd ./nomeroff-net
git clone https://github.com/matterport/Mask_RCNN.git
pip3 install -r requirements.txt

Download the latest models that are required for your neural network to work and place them in the ./models folder of the nomeroff-net project

Windows

On Windows, you must have the Visual C++ 2015 build tools on your path. If you don't, make sure to install them from here:

Then, run visualcppbuildtools_full.exe and select default options:

Hello Nomeroff Net

# Import all necessary libraries.
import os
import numpy as np
import sys
import matplotlib.image as mpimg

# change this property
NOMEROFF_NET_DIR = os.path.abspath('../../')

# specify the path to Mask_RCNN if you placed it outside Nomeroff-net project
MASK_RCNN_DIR = os.path.join(NOMEROFF_NET_DIR, 'Mask_RCNN')
MASK_RCNN_LOG_DIR = os.path.join(NOMEROFF_NET_DIR, 'logs')

sys.path.append(NOMEROFF_NET_DIR)

# Import license plate recognition tools.
from NomeroffNet import  filters, RectDetector, TextDetector, OptionsDetector, Detector, textPostprocessing, textPostprocessingAsync

# Initialize npdetector with default configuration file.
nnet = Detector(MASK_RCNN_DIR, MASK_RCNN_LOG_DIR)
nnet.loadModel("latest")

rectDetector = RectDetector()

optionsDetector = OptionsDetector()
optionsDetector.load("latest")

# Initialize text detector.
textDetector = TextDetector.get_static_module("eu")()
textDetector.load("latest")

# Detect numberplate
img_path = '../images/example2.jpeg'
img = mpimg.imread(img_path)
NP = nnet.detect([img])

# Generate image mask.
cv_img_masks = filters.cv_img_mask(NP)

# Detect points.
arrPoints = rectDetector.detect(cv_img_masks)
zones = rectDetector.get_cv_zonesBGR(img, arrPoints)

# find standart
regionIds, stateIds, countLines = optionsDetector.predict(zones)
regionNames = optionsDetector.getRegionLabels(regionIds)
 
# find text with postprocessing by standart  
textArr = textDetector.predict(zones)
textArr = textPostprocessing(textArr, regionNames)
print(textArr)
# ['JJF509', 'RP70012']

Hello Jupyter Nomeroff Net

Online Demo

In order to evaluate the quality of work of Nomeroff Net without spending time on setting up and installing, we made an online form in which you can upload your photo and get the recognition result online

AUTO.RIA Numberplate Dataset

All data on the basis of which the training was conducted is provided by RIA.com. In the following, we will call this data the AUTO.RIA Numberplate Dataset.

We will be grateful for your help in the formation and layout of the dataset with the image of the license plates of your country. For markup, we recommend using VGG Image Annotator (VIA)

Nomeroff-Net Mask-RCNN Example:
Mask detection example
Key points detection example

AUTO.RIA Numberplate Options Dataset

The system uses several neural networks. One of them is the classifier of numbers at the post-processing stage. It uses dataset AUTO.RIA Numberplate Options Dataset.

The categorizer accurately (99%) determines the country and the type of license plate. Please note that now the classifier is configured mainly for the definition of Ukrainian numbers, for other countries it will be necessary to train the classifier with new data.

AUTO.RIA Numberplate OCR Datasets

As OCR, we use a specialized implementation of a neural network with GRU layers, for which we have created several datasets:

This gives you the opportunity to get 98% accuracy on photos that are uploaded to AUTO.RIA project

Number plate recognition example

Road map

For several months now, we have been devoting some of our time to developing new features for the Nomeroff Net project. In the near future we plan:

Post a detailed instruction on the training of recognition models and classifier for license plates of your country.
To expand the classification of countries of license plates by which to determine the country in which this license plate is registered.

Contributing

Contributions to this repository are welcome. Examples of things you can contribute:

Training on other datasets.
Accuracy Improvements.

Credits

Dmytro Probachay <dmytro.probachay@ria.com>
Oleg Cherniy <oleg.cherniy@ria.com>

AzimovS/nomeroff-net