In this section, we will have a look at the various arithmetic operations that can be performed on images. Images are represented as matrices in OpenCV. So, arithmetic operations on images are similar to the arithmetic operations on matrices. Images must be of the same size for you to perform arithmetic operations on the images, and these operations are performed on individual pixels.
cv2.add(): This function is used to add two images, where the images are passed as parameters.
cv2.subtract(): This function is used to subtract an image from another.
We know that the subtraction operation is not commutative. So,
cv2.(img2,img1) will yield different results, whereas