how can i divide an image diagonally whose size is [129 133 3], into two equal part?

an image whose size is [129 133 3]. have to divide this image diagonally into two equal part, as two triangle form that image. how can it be done?

Answer 1

[Guillaume]

See my answer to this exact same question (apart from image size).

Is this an assignment?

[parthasarathi ghorai]

yes it is. the assignment is to divide an image diagonally into two equal part and hide another image on one of those two divided part, which I get from the first image.