in src/webcam_client.py [0:0]
def draw_label(img, bbox, label,
bg_color=(255, 0, 0), text_color=(255, 255, 255)):
font = cv2.FONT_HERSHEY_SIMPLEX
font_scale = 1
thickness = 2
size = cv2.getTextSize(label, font, font_scale, thickness)[0]
x, y = (bbox['Left'], bbox['Top'])
cv2.rectangle(img, (x, y-size[1]), (x+size[0], y), bg_color, cv2.FILLED)
cv2.putText(img, label, (x, y), font, font_scale, text_color, thickness)