Python Pillow – Flipping and Rotating Images

Python Pillow, or PIL, is a Python library that provides image editing and manipulation capabilities. The image module provides functions for flipping and rotating images. image.transpose() is a function that rotates and flips an image, and its argument is a required keyword.

Syntax:

image.transpose(appropriate keyword)

In the following example, we will use an appropriate keyword to explore all possible rotations.

Images used:

Flipping an Image

• Counterclockwise: To flip an image counterclockwise, pass the Image.TRANSPOSE keyword.

Syntax:img.transpose(Image.TRANSPOSE)

Example:

from PIL import Image
 

img = Image.open('geek.jpg')
 
# flip anti-clockwise
flip_img = img.transpose(Image.TRANSPOSE)
 
flip_img.show()

Output:

Clockwise: To flip an image clockwise, pass the keyword Image.TRANSVERSE..

Syntax:img.transpose(Image.TRANSVERSE)

Example:

from PIL import Image
 

img  = Image.open('geek.jpg')
 
# flip clockwise
flip_img = img.transpose(Image.TRANSVERSE)
 
flip_img.show()

Output:

Horizontal Flip: For horizontal flipping, pass Image.FLIP_LEFT_RIGHT as the key.

Syntax: img.transpose(Image.FLIP_LEFT_RIGHT)

Example:

from PIL import Image
 

img = Image.open('geek.jpg')
 
# flip horizontal
flip_img = img.transpose(Image.FLIP_LEFT_RIGHT)
 
flip_img.show()

Output:

Vertical Flip: Use image.FLIP_TOP_BOTTOM as the keyword to perform a vertical flip.

Syntax:img.transpose(Image.FLIP_TOP_BOTTOM)

Example:

from PIL import Image
 

img = Image.open('geek.jpg')
 
# flip vertically
flip_img = img.transpose(Image.FLIP_TOP_BOTTOM)
 
flip_img.show()

Output:

from PIL import Image     img = Image.open('geek.jpg')   # Rotate by 90 degrees rot_img = img.transpose(Image.ROTATE_90)   rot_img.show()

Output:

Rotate 180 degrees: The keyword for rotating 180 degrees is Image.ROTATE_180.

Syntax: img.transpose(Image.ROTATE_180)

Example:

from PIL import Image
 

img = Image.open('geek.jpg')
 
# Rotate by 180 degrees
rot_img = img.transpose(Image.ROTATE_180)
 
rot_img.show()

Output:

Rotate 270 degrees: To rotate 270 degrees, use the keyword Image.ROTATE_270.

Syntax: img.transpose(Image.ROTATE_270)

Example:

from PIL import Image
 

img = Image.open('geek.jpg')
 
# Rotate by 270 degrees
rot_img = img.transpose(Image.ROTATE_270)
 
rot_img.show()

Output: