Hi !
Super quick post today with a cool scenario to support my TikTok videos in Spanish (I know 😀):
How to add a pencil sketch effect to an image using python and opencv
Here is the output with an original photo from my office and a new image with the pencil sketch effect:
Sample code:
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# Copyright (c) 2022
# Author : Bruno Capuano
# Create Time : 2022 Feb
# Change Log :
# – Open a local image
# – Apply a pencil sketch effect to 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 ('Office2.jpg' )
img = cv2 .resize (imgOriginal , (324 , 720 ))
cv2 .imshow ('@ElBruno – Office' , img )
# get image height and width
height , width , channels = img .shape
img_gray = cv2 .cvtColor (img , cv2 .COLOR_RGB2GRAY )
img_blur = cv2 .GaussianBlur (img_gray , (21 , 21 ), 0 , 0 )
img_blend = cv2 .divide (img_gray , img_blur , scale = 256 )
cv2 .imshow ('@ElBruno – Pencil Sketch' , img_blend )
# save image using opencv
cv2 .imwrite ('OfficePencilSketch.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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