QLab

QLab is a small local image annotation tool.

Point it at a directory of images and it opens a browser UI where you can:

• draw multiple bounding boxes
• resize and move boxes
• add an annotation to each box
• move between images with the arrow keys

Install

pip install "git+https://github.com/jataware/qlab.git"

Run

qlab /path/to/images

Optional:

qlab /path/to/images --output /path/to/annotations.jsonl --port 8765 --no-browser

Output

QLab writes annotations to annotations.jsonl by default. Each line is one image, with a bboxes array. Each box stores:

• x
• y
• width
• height
• annotation