Getting transformed point

Hi.

I am YJHong and thanks to your nice work.

What I gonna ask is that getting a kind of mapping function after CPAB transformation.

For example, I want to find out [x_t, y_t] point in transformed image corresponding to [x, y] point in pre-transformed image (original image)

How can I find out this?

Thanks.

Regards.

YJHong.
