detect if a pixel in RGB image belong to a line between two other pixels (MATLAB)

Question

I have a problem in my matlab project

I have a RGB color image, and I have two specified pixel (x1,y1) and (x2,y2) I want to check each pixel in the image and determ

Answer 1

You are, though you may not know it, trying to implement Bresenham's Algorithm or a similar algorithm.