Python PIL | ImageChops.subtract() and ImageChops.subtract_modulo() method

PIL is the Python Imaging Library which provides the python interpreter with image editing capabilities.

ImageChops.subtract() method –

This method subtracts two images, dividing the result by scale and adding the offset. If omitted, scale defaults to 1.0, and offset to 0.0.

Syntax: ImageChops.subtract(image1, image2, scale = 1.0, offset = 0)

Parameters:
image1: first image
image2: second image
scale: it is floating point value (if the value keeps on increasing, resultant image becomes darker and darker)
offset: numeric value (if value keeps on increasing, resultant image becomes lighter)

Return Value: An Image

# This will import Image and ImageChops modules
from PIL import Image, ImageChops

# Opening Images
im = Image.open(r"C:\Users\Admin\Pictures\images.png")
im2 = Image.open(r"C:\Users\Admin\Pictures\download.PNG")

# subtracting im and im2
im3 = ImageChops.subtract(image1 = im, image2 = im2)

# showing resultant image
im3.show()

Output:

ImageChops.subtract_modulo() method –

This method is also used to subtract two images but without clipping the result.

Syntax: ImageChops.subtract_modulo(image1, image2)

Parameters: This method takes two images as parameters.

Return Value: An Image.

# This will import Image and ImageChops modules
from PIL import Image, ImageChops

# Opening Images
im = Image.open(r"C:\Users\Admin\Pictures\images.png")
im2 = Image.open(r"C:\Users\Admin\Pictures\download.PNG")

# subtracting im and im2
im3 = ImageChops.subtract_modulo(image1 = im, image2 = im2)

# showing resultant image
im3.show()

Output: