Image Subtraction in Python using OpenCV

In this article, you’ll see image subtraction in Python using OpenCV. I highly recommend you get the “Computer Vision: Models, Learning, and Inference Book” to learn Computer Vision. For image subtraction in Python just follow these steps:

Step 1: Install OpenCV

If OpenCV is not installed, then first install it using this code.

pip install opencv-python

pip install opencv-python

Step 2: Import OpenCV

Import the OpenCV library.

import cv2

import cv2

Step 3: Read the Images

Now read the images from the location.

img1 = cv2.imread("C:\\AiHints\\image1.png")
img2 = cv2.imread("C:\\AiHints\\image2.png")

img1 = cv2.imread("C:\\AiHints\\image1.png")

img2 = cv2.imread("C:\\AiHints\\image2.png")

Step 4: Image Subtraction

In this step, subtract the images using cv2.subtract() function.

sub_img = cv2.subtract(img1,img2)

sub_img = cv2.subtract(img1,img2)

Step 5: Display the Output

cv2.imshow("Image 1", img1)
cv2.imshow("Image 2", img2)
cv2.imshow("Image Subtraction", sub_img)

cv2.waitKey(0)
cv2.destroyAllWindows()

cv2.imshow("Image 1", img1)

cv2.imshow("Image 2", img2)

cv2.imshow("Image Subtraction", sub_img)

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cv2.waitKey(0)

cv2.destroyAllWindows()

Output: