font and color of the annotation box

[mmx12345678]

I want to modify the font and color of the annotation box.

[AFLucas-UOM]

YOLOv5 handles box/label styling in its plotting utilities.

Change colour:

from utils.plots import Annotator

annotator = Annotator(im, line_width=2, font_size=0.6)
annotator.box_label(box, label, color=(0, 255, 0))  # BGR

Change font / thickness:
Edit utils/plots.py, inside Annotator.box_label():

cv2.putText(im, label, (int(x1), int(y1) - 2),
            cv2.FONT_HERSHEY_DUPLEX, 0.7, color, 2, cv2.LINE_AA)

Supported OpenCV fonts include SIMPLEX, DUPLEX, COMPLEX, TRIPLEX.

For full control: skip YOLOv5 plotting and draw boxes manually after inference with OpenCV.