#OpenCV – How to add a watermark to an image πŸ–ΌοΈ using Python πŸ

Hi !

Super quick post today with a cool scenario to support my TikTok videos in Spanish (I know πŸ˜€):

How to add a watermark text to an image using python and opencv

Here is the output with an original photo from my office and a watermarked one:

add watermark to an image using python and opencv

Sample code:

# Copyright (c) 2022
# Author : Bruno Capuano
# Create Time : 2022 Feb
# Change Log :
# – Open a local image
# – Apply a watermark to the image
# – Save the new the image
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import cv2
# open an image using opencv
imgOriginal = cv2.imread('Office.jpg')
img = cv2.resize(imgOriginal, (640, 304))
cv2.imshow('@ElBruno – Office', img)
# get image height and width
height, width, channels = img.shape
# add watermark
white = (255, 255, 255)
position = (width 125, height 15)
font = cv2.FONT_HERSHEY_DUPLEX
cv2.putText(img, "@El Bruno",
position, font, 0.7, white, 1)
cv2.imshow('@ElBruno – Watermark', img)
# save image using opencv
cv2.imwrite('OfficeWatermark.jpg', img)
# key controller
cv2.waitKey(0)
cv2.destroyAllWindows()

Happy coding!

Greetings

El Bruno

More posts in my blog ElBruno.com.


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