Absolutely – you could either divide them all by the image height and width you’re using, or I suppose normalise each to fill the frame by first subtracting the minimum x value, then dividing by the maximum; doing the same with y; then take the larger of the two values and divide both x and y by that (to avoid stretching the coordinates).
That’s what I’d do, thinking about it.
And yeah, since you’d be using 1s and 0s, there’d be no further need for normalisation … I’d be interested to try it myself.