How to subtract two images using python opencv2 to get the foreground object

Question

Is there any way to subtract two images in python opencv2 ?

• Image 1 : Any image (eg. a house Image) (static image)
• Image 2 : The same Image with an Object (In house, a person is standing...) (static image + dynamic objects)
• Image 3 = Image 2 - Image 1

If we subtract Image2 from Image1 means Image3 should give Object(person) only.

Answer 1

Try background subtraction.

Use cv2.subtract(img1,img2) instead of arithmetic operation, as cv2 will take care of negative values.