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 Objec

Answer 1

cv2.subtract does not work it just binds the values between 0-255 so if you wanna get negative values just convert the image from unit8 to int32 or int64. Note unint8 could only take on the values of 0-255 thus it could not handle negative values

image1= np.int32(image1)

image2= np.int32(image2)

image3 = image1 - image2