In this article, we will see how to work with images using Pillow in Python. We will discuss basic operations like creating, saving, rotating images. So let’s get started discussing in detail but first, let’s see how to install pillow.
Installation
To install this package type the below command in the terminal.
pip install pillow
Creating new image
You can create a new image using PIL.Image.new() method. This method creates a new image with the given mode and size. Size is given as a (width, height)-tuple, in pixels
Syntax: PIL.Image.new(mode, size, color)
Code:
Python3
import PILimage = PIL.Image.new(mode = "RGB", size = (200, 200), color = (255, 153, 255))image.show() |
Output:
Opening image
You can open any image using PIL.Image.open() method.
Syntax: PIL.Image.open(fp, mode=’r’)
Code:
Python3
from PIL import Imageimage = Image.open('nature.jpg')image.show() |
Output:
Getting Information about the image
- Getting the format of the image: obj.format method returns the format of the image file.
Python3
from PIL import Imageimg = Image.open("test.png")print(img.format) |
Output:
PNG
- Getting the size of the image: obj.size attribute provides the size of the image. It returns a tuple that contains width and height.
Python3
from PIL import Imageimg = Image.open("test.png")print(img.size) |
Output:
(180, 263)
Renaming and Saving Image
We can change the name, format of the image, and can also rename it using the image.save() method.
Syntax: Image.save(fp, format=None, **params)
Code:
Python3
from PIL import Imageimage = Image.open('nature.jpg')image.show()image.save('nature1.bmp')image1 = Image.open('nature1.bmp')image1.show() |
Output:
Before change
After change
Cropping the image
PIL is the Python Imaging Library which provides the python interpreter with image editing capabilities. PIL.Image.crop() method is used to crop a rectangular portion of any image.
Syntax: PIL.Image.crop(box = None)
Code:
Python3
from PIL import Image# Open imageim = Image.open("nature.jpg")# Show actual Imageim.show()# Show cropped Imageim = im.crop((0,0,50,50)im.show() |
Output:
Before rotation
Cropped Image
Rotating the image
PIL.Image.Image.rotate() method is used to rotate a given image to the given number of degrees counterclockwise around its center.
Syntax: new_object = PIL.Image.Image.rotate(image_object, angle, resample=0, expand=0) OR new_object = image_object.rotate(angle, resample=0, expand=0)
Code:
Python3
from PIL import Image# Open imageim = Image.open("nature.jpg")# Show actual Imageim.show()# Show rotated Imageim = im.rotate(45)im.show() |
Output:
Before rotation
After rotation
Filtering the image
The current version of the Pillow library provides the below-mentioned set of predefined image enhancement filters.
- BLUR
- CONTOUR
- DETAIL
- EDGE_ENHANCE
- EDGE_ENHANCE_MORE
- EMBOSS
- FIND_EDGES
- SHARPEN
- SMOOTH
- SMOOTH_MORE
The ImageFilter module contains definitions for a pre-defined set of filters, which can be used with the Image.filter() method.
Syntax: Filter(Kernel)
Takes in a kernel (predefined or custom) and each pixel of the image through it (Kernel Convolution).
Code:
Python3
# Import required image modulesfrom PIL import Image, ImageFilter# Import all the enhancement filter from pillowfrom PIL.ImageFilter import ( BLUR, CONTOUR, DETAIL, EDGE_ENHANCE, EDGE_ENHANCE_MORE, EMBOSS, FIND_EDGES, SMOOTH, SMOOTH_MORE, SHARPEN)# Create image objectimg = Image.open('nature.jpg')# Applying the sharpen filter# You can change the value in filter function# to see the deifferencesimg1 = img.filter(SHARPEN)img1.show() |
Output:
Before filter
After SHARPEN filter
Creating a Watermark on the image
Here, you can create a watermark by using ImageDraw.Draw.text() This method draws the string at the given position.
Syntax: ImageDraw.Draw.text(xy, text, fill=None, font=None, anchor=None, spacing=0, align=”left”)
Code:
Python3
# Import required Image libraryfrom PIL import Image, ImageDraw, ImageFont# Create an Image Object from an Imageim = Image.open('nature.jpg')width, height = im.sizedraw = ImageDraw.Draw(im)text = "lovely nature"font = ImageFont.truetype('arial.ttf', 36)textwidth, textheight = draw.textsize(text, font)# calculate the x,y coordinates of # the textx = 100y = 50# draw watermark in the bottom right# cornerdraw.text((x, y), text, font=font)im.show()# Save watermarked imageim.save('watermark.jpg') |
Output:
Before Watermark/text
After Watermark/text
