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Python 3 OpenCV Script to Cartoonify Image & Export a Pencil Sketch as Image in Terminal
Jun 3, 2025
Get the full source code of application here:
https://codingshiksha.com/python/python-3-opencv-script-to-cartoonify-image-export-a-pencil-sketch-as-image-in-terminal/
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0:00
uh hello guys welcome to this video so
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in this video I will show you a Python
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script which will generate a pencil
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sketch of your input image or you can
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say that it's a it will generate a
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cartoon version of your image uh very
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simply OpenCV is a very popular package
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inside Python and uh let me show you a
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very simple example so let's suppose we
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are taking this image as an example we
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have this input image and I am applying
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this Python script to it so once I
0:32
execute this you will see it will
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generate a simple pencil version of this
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image on the left hand side you will see
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pencil sketch dot jpg so if I try to
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open this you will see this is actually
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drawn a pencil sketch of this image a
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cartoon version of this image so you can
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take any image for example let's suppose
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I take this image for example I pass
1:02
this and execute the same
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script so now you can see this looks
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something like this you can see how
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beautiful the image is looking uh this
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is the pencil sketch of the image
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so it is looking like someone has drawn
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this pencil sketch of the original image
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so in this way you can use the open cv
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module uh let me show you the package
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name
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uh which is open cv- python so this is
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the package name uh simply install this
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by executing this pip command here i've
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already installed it so after this you
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just need
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to I've given the script in the
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description of this video so if you need
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the script all the source code is given
1:49
so first of all you import the OpenCV
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package then we load the input image by
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using the image read
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function here we specify the address of
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the image like this after that we now
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need to the first step is that we need
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to convert this image to grayscale the
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black and white version of the image for
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this open C we have this method here
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which is CVT
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color and here we pass your input image
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and then we convert this into the black
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and white image version the second step
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is to invert this
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image so we create another variable
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inverted
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image 255 minus the gray
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image the third step you need to blur
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this image for blurring this image Open
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CV again has a method for this which is
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gshian
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blur after blurring this image we again
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need to invert this image once
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again and uh the last step is to
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generate the pencil sketch by blending
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it
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so it contains a function which is
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cv2
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divide and here we pass
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our black and white image and the
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inverted and then here you can provide
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the scaling value so the best value I
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found is 256 so just provide this and
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after that we simply save this output
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image write
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function so you save your pencil sketch
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image that's all so this completes your
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script very simple script and if I once
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again delete this and once again run
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this you will see it will generate the
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pencil
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sketch so you will see that this pencil
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sketch looks something like this you
4:00
will see
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that it's a cool little effect that you
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can generate inside
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Python uh thank you very much for
4:09
watching this video and also check out
4:12
my website
4:13
freemediatools.com uh which contains
4:15
thousands of tools
#Clip Art & Animated GIFs