Python Pillow - ImageChops.darker() Function

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The PIL.ImageChops.darker function compares the two input images pixel by pixel and returns a new image containing the darker values from each corresponding pair of pixels.

The operation is defined as follows −

$$\mathrm{Out\:=\:min(image1,image2)}$$

Syntax

Following is the syntax of the function −

PIL.ImageChops.darker(image1, image2)

Parameters

Here are the details of this function parameters −

• image1 − The first input image.

• image2 − The second input image.

Return Value

The return type of this function is an Image.

Examples

Example 1

In this example, the ImageChops.darker() function is applied to two random RGB images (image1 and image2) to create a new image containing the darker values among the two input images. Here we will observe the pixel values of the two input images, and the output image at a specified location using the getpixel() function.

from PIL import Image, ImageChops
import numpy as np

# Create two random RGB images
image1 = Image.fromarray(np.array([(35, 64, 3), (255, 0, 0), (255, 255, 0), (255, 255, 255), (164, 0, 3)]), mode="RGB")
print("Pixel values of image1 at (0, 0):", image1.getpixel((0, 0)))

image2 = Image.fromarray(np.array([(25, 14, 3), (25, 222, 0), (255, 155, 0), (255, 55, 100), (180, 0, 78)]), mode="RGB")
print("Pixel values of image2 at (0, 0):", image2.getpixel((0, 0)))

# Get the darker values of the two images
result = ImageChops.darker(image1, image2)
print("Pixel values of the result at (0, 0) after darker:", result.getpixel((0, 0)))

Output

Pixel values of image1 at (0, 0): (35, 0, 0)
Pixel values of image2 at (0, 0): (25, 0, 0)
Pixel values of the result at (0, 0) after darker: (25, 0, 0)

Example 2

In this example, ImageChops.darker() function is used to compare the pixel values of two input pixels to select the darker values for each corresponding pixel pair.

from PIL import Image, ImageChops

# Open two image files
image1 = Image.open('Images/black rose.jpg')
image2 = Image.open('Images/black-doted-butterflies.jpg')

# Compare the two images pixel by pixel and get the darker values
result = ImageChops.darker(image1, image2)

# Display the input and resulting images
image1.show()
image2.show()

Output

Input Image 1

Input Image 2

Output Image

Example 3

Here is an example that uses the ImageChops.darker() function on two PNG image files to get a new images with darker values.

from PIL import Image, ImageChops

# Open two image files
image1 = Image.open('Images/dark_img1.png')
image2 = Image.open('Images/dark_img2.png')

# Compare the two images pixel by pixel and get the darker values
result = ImageChops.darker(image1, image2)

# Display the input and resulting images
image1.show()
image2.show()
result.show()

Output

Input Image 1

Input Image 2

Output Image