WangLiwen1994/traffic_light

This repo is a simple module to recognize the signal (red, yellow or green) of the traffic light.

Traffic Light Classifier

This repo is a simple module (depends on the OpenCV package only) to recognize the signal (red, yellow or green) of the traffic light. Most of the codes are from https://github.com/thedch/traffic-light-classifier, The modification is list at "Traffic_Light_Classifier.py".

Dependency

• python 3
• opencv

Installation

To prepare the environment, it needs to install the dependent packages as listed above. We use conda to create one example:

conda create --name traffic_light python=3.5 -y
conda activate traffic_light
pip install opencv-python

Quick start

In the required python environment, clone the repo, and run the 'demo.py'.

git clone https://github.com/WangLiwen1994/traffic_light.git
cd traffic_light

python demo.py

You can see the result displayed by a window like: text denotes the color of the traffic light, the value is the confidence score (probability).

To use the module

just copy "Traffic_Light_Classifier.py" and "demo.py"(change another name) to your project.

from demo import TrafficLight

m_light = TrafficLight(position=[xL, yT, xR, yB]) # set the position of the traffic light

signal, prob = m_light.getSignal(img_bgr) # input the opencv image with the format of "BGR"
# "signal" stores the text of the signal name,
# "prob" stores the probability of the prediction.