Question

Please design and implement a program using python subtract an input image from another input image.

Please do not use any image processing library functions.

Answer 1

So to answer your question, I have pasted the code below.

I have used the matplotlib library only to read the image and used the numpy library for image subtraction.

I have also tried the image subtraction using opencv and I have notices quite astonishing results.

It seems that somehow numpy stretched the histogram and normalized resulting values.

from matlpotlib import image
import numpy as np

img_cam0 = image.imread('koala1.jpeg')
img_cam1 = image.imread('koala2.jpeg')

#np subtraction and mean

np_subtr = np.subtract(img_cam0,img_cam1)
np_mean = (np_subtr)

print("numpy mean is : ",np_mean)
f.show_im(np_subtr,'np_subtr')