What are some basic functions of Image Processing using PIL?
What is Image Processing?
Digital Image Processing is the use of a digital computer to process digital images through an algorithm.
Image processing mainly includes the following steps:
- Importing the image via image acquisition tools.
- Analysing and manipulating the image.
- Output can be an altered image or a report based on that image.
Python Imaging Library (PIL)
PIL is an additional, free, open-source library for the Python programming language that provides support for opening, manipulating, and saving many different image file formats.
# To import PILfrom PIL import Image, ImageFilter
Operations on images using PIL library
1. To open an image and display from a local path:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")img.show()
2. To know the basic properties of an image:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# basic image properties.print (img.size)print (img.width)print (img.height)
3. To rotate an image by a specified angle:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# rotating the image with specified angle i.e 45 anticlock wiserotated_img = img.rotate(45)rotated_img.show()
Enter the input below
4. To crop an image:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# croping the image with the specified boundaries.cropped_img = img.crop((20,20,500,500)) # left, upper, right, lowercropped_img.show()
Enter the input below
5. To blur an image:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# blur the image.filtered_img = img.filter(filter = ImageFilter.BLUR)filtered_img.show()
Enter the input below
6. To resize an image:
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# resizing the image.sImg = img.resize((300,200))sImg.show()
Enter the input below
7. To split the image into R, G, and B formats and merge them:
Getting back the original image by merging all three(R, G, and B) image splits.
# To import PILfrom PIL import Image, ImageFilter# opening the image stored in the local path.img = Image.open("dog.jpg")# split the rgb images into r, g, b individual images and merging again.r,g,b = img.split()r.show()g.show()b.show()# mergingim = Image.merge("RGB", (r, g, b))im.show()
Enter the input below
Image processing is a method used to perform operations on an image to get an enhanced image or to extract some useful information.
