I have a 30 mins, will quick upvote

Q1) [50+50=100 points] Three-Frame Differencing (TFD), when applied real-time, performs an AND operation between two images (actually frames), one of which comes from frame differencing between I(t) and I(tN), and the other is from frame differencing between I(tN) and I(t2N). Write a pseudo-code for this TFD(N) algorithm, similar to the ones we saw in class. a) With using the Simple Frame Differencing (SFD) algorithm, b) Without using the Simple Frame Differencing (SFD) algorithm