SimpleAnnotator

A simple annotator for labeling images or repairing labels.

Requirement

• python 3.x
• cv2 (opencv-python)
• matplotlib

Usage

Annotate Mode:

• "a": change to mode [annotate] (a polygon labeling mode);
• left button: draw a polygon, set key points (it will end when a point near the initial one);
• backspace: retract the last stroke of the polygon;

Bbox Mode:

• "b": change to mode [bbox];
• left button: draw a bounding box as label;

Change Mode:

• "c": change to mode [change];
• left button: change the label of target instance to set label;
• right button: change the target label of the whole image to set label;

Set Label:

• "x": (x in [0,9]) : set a label (x), 0 can be used as eraser;
• "`": set a label (255);
• "-": auto set a unused label;

Others:

• "ctrl+z": revocation;
• "esc": quit;
• "enter": save output in [--out] and quit;

Label a new image:

python simple_annotator.py --img img.jpg --out out.png 

Repair a label:

python simple_annotator.py --img img.jpg --gt gt.png --out out.png

Contact

If you have any questions, feel free to contact me via: frazer.linzheng(at)gmail.com.

More

For more about interactive segmentation or useful annotation tools, feel free to visit my homepage.