Install virtual environment and packages
# Window OS and Python 3.9
python -m venv venv
.\venv\Scripts\activate
# Upgrade pip
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py
# Install labelImg
pip install labelImg
Create a folder structure same as below
├── data
├── images
└── labels
Put all of your image in images
directory. And create a classes.txt
contain all class you want to label. Example of classes.txt
as below
dog
cat
pig
Put classes.txt
in 2 place, in labels
directory and same level as labels
directory
Full structure of workspace as below
├── data
├── images
│ ├── img1.jpg
│ ├── img2.jpg
│ └── ...
├── labels
│ └── classes.txt
└── classes.txt
Run labelImg with
# labelImg [IMAGE_PATH] [PRE-DEFINED CLASS FILE]
labelImg .\data\images\ .\data\classes.txt
On GUI of labelImg:
File -> Change Save Dir -> (save label directory)
- Choose
YOLO
format on the left tray
Next and previous image with D -> A
Label with W
Delete .\data\classes.txt
after labeling
With YOLO
format, label will be saved with format label_index x_center y_center w h
and normalize to scale [0, 1]
1 0.415842 0.863095 0.102970 0.101190
1 0.228713 0.315476 0.077228 0.053571
1 0.756436 0.328869 0.114851 0.050595