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draw text with background // opencv
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import cv2 # opencv | |
import numpy as np | |
font_scale = 1.5 | |
font = cv2.FONT_HERSHEY_PLAIN | |
# set the rectangle background to white | |
rectangle_bgr = (255, 255, 255) | |
# make a black image | |
img = np.zeros((500, 500)) | |
# set some text | |
text = "Some text in a box!" | |
# get the width and height of the text box | |
(text_width, text_height) = cv2.getTextSize(text, font, fontScale=font_scale, thickness=1)[0] | |
# set the text start position | |
text_offset_x = 10 | |
text_offset_y = img.shape[0] - 25 | |
# make the coords of the box with a small padding of two pixels | |
box_coords = ((text_offset_x, text_offset_y), (text_offset_x + text_width + 2, text_offset_y - text_height - 2)) | |
cv2.rectangle(img, box_coords[0], box_coords[1], rectangle_bgr, cv2.FILLED) | |
cv2.putText(img, text, (text_offset_x, text_offset_y), font, fontScale=font_scale, color=(0, 0, 0), thickness=1) | |
cv2.imshow("A box!", img) | |
cv2.waitKey(0) |
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