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Python 3 OpenCV Script to Crop Image into Different Shapes Using Numpy and Save Images in a Folder
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Jun 3, 2025
Get the full source code of application here: https://codingshiksha.com/python/python-3-opencv-script-to-crop-image-into-different-shapes-using-numpy-and-save-images-in-a-folder/
View Video Transcript
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 uses Open CV and numpy
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package to crop images into different
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shapes such as circular triangle and
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ellipse so let me take a very simple
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example so we take this input image
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which is present in my working directory
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so we have this simple image and if I
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apply this Python script so what will
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happen it will actually create output
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directory and
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then you'll see
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output/shapes so it will crop this image
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into circular
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ellipse this is a circular one this is
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ellipse this is the rectangle crop and
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triangle crop so it will crop this image
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into multiple different shapes using
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this Python script you can modify the
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script to actually match the coordinates
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as well so different images will yield
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different results so once again if I
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take a different image for
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example so again it will actually crop
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as you can
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see it will crop this image into
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multiple shapes so this is a script i've
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given the script in the description of
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the video so first of all guys you need
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to install some modules for this
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so just go to this website and just
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install first of all numpy package which
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is actually a fundamental package inside
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Python for computing then we also need
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to install uh the package which will be
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I think yeah Open
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CV which is again a very popular package
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inside Python so install this as well so
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after that we simply create the
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script so let me just show you step by
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step how the script is created
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so first of all we just import all the
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packages which are necessary which is
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your open cv package the numpy
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package and then the operating system
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package so here we simply load the input
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image by the open cv method image
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read so yeah our images is present
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inside after we load the input image we
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simply specify the height and the width
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so we use this image
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shape then we specify the output folder
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where all the images will be created
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so then we specify or make these
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directories by the operating system
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module and then we apply these three
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shapes so first shape will be the
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circular mask so we'll mark this image
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into a circular shape so this is
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actually the code for this so we use the
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numpy library we draw the circle using
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open cv save the result as circles
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crop.png
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then we do the same thing for triangle
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as well this will actually crop the
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image into a triangle shape so this
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computing is done by numpy library you
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can see all these functions and then we
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crop this into triangle
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crop.png and lastly we do this for
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rectangle rectangle
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cropping so all these methods are there
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inside numpy then we apply the rectangle
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method of open CV and crop this image
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into the form of rectangle and lastly we
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do this for
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ellipse which is again a different shape
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again we call this method cv2 ellipse
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and
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numpy for
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computing and lastly we draw this or
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print out that all the shapes are
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cropped and saved to this output folder
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so once again if I run this script now
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all the script is given in the
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description of the video so it will
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create a output shapes folder where all
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the shapes will be
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there so you can see that different
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shapes will be
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there so thank you very much guys for
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watching this video and please visit on
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my website freemediattools.com
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uh which contains thousands of tools
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