How to rotate an image using Python?

In this article, let’s see how to rotate an Image using Python. By Image Rotation, the image is rotated about its center by a specified number of degrees. The rotation of an image is a geometric transformation. It can be done either by Forward Transformation (or) Inverse Transformation.

Here Image Processing Library with Pillow uses Inverse Transformation. If the Number Of Degrees Specified for Image Rotation is Not an Integer Multiple of 90 Degrees, then some Pixel Values Beyond Image Boundaries i.e Pixel values lying outside the Dimension of the image. Such Values will not be displayed in the output image. 

Method:1 Using Image Processing Library Pillow

Python3

# import the Python Image
# processing Library
from PIL import Image

# Giving The Original image Directory
# Specified
Original_Image = Image.open("./gfgrotate.jpg")

# Rotate Image By 180 Degree
rotated_image1 = Original_Image.rotate(180)

# This is Alternative Syntax To Rotate
# The Image
rotated_image2 = Original_Image.transpose(Image.ROTATE_90)

# This Will Rotate Image By 60 Degree
rotated_image3 = Original_Image.rotate(60)

rotated_image1.show()
rotated_image2.show()
rotated_image3.show()

Output:

This is Image is Rotated By 180 Degree

This Image Is Rotated By 60 Degree

This Image Is Rotated By 90 Degree

The rotate() method of Python Image Processing Library Pillow Takes the number of degrees as a parameter and rotates the image in Counter Clockwise Direction to the number of degrees specified.

Method 2: Using Open-CV to rotate an image by an angle in Python

This is common that everyone knows that Python Open-CV is a module that will handle real-time applications related to computer vision. Open-CV works with image processing library imutils which deals with images. The imutils.rotate() function is used to rotate an image by an angle in Python.

Python3

import cv2  # importing cv
import imutils


# read an image as input using OpenCV
image = cv2.imread(r".\gfgrotate.jpg")

Rotated_image = imutils.rotate(image, angle=45)
Rotated1_image = imutils.rotate(image, angle=90)

# display the image using OpenCV of
# angle 45
cv2.imshow("Rotated", Rotated_image)

# display the image using OpenCV of
# angle 90
cv2.imshow("Rotated", Rotated1_image)

# This is used for To Keep On Displaying
# The Image Until Any Key is Pressed
cv2.waitKey(0)

Output:

Image Rotated Using Open-CV in 45 Degree

Image Rotated Using Open-CV in 90 Degree

Even this Open-CV Rotates the image in Counter Clockwise direction to the number of degrees specified