Find the lowest white pixel

Question

I have this binary image.

How do i find the coordinate of the lowest white pixel?

Answer 1

If in your matrix you have 0 and 1 values representing white and black

you can find white pixels with

   [row,col,v] = find(A);

Then the lowest pixel has coordinates

x = max(row) 
y = col(find(row==max(row))) 

If you have more than one lowest pixel maybe you can simply take the coordinates of one of them. For example:

mrow = max(row);

y = col(find(row==mrow(1)))%if you wanna take the lowest pixel on the left