Receiving x and y coordinates of an image.

Using the code:

"I = imread('pic.png');

[m, n, p] = size (I);

x = 1: n;

y = 1: m;

[x, y] = meshgrid (x, y);"

I was able to plot this image onto MATLAB.

However, now I am unable to retrieve all of the x and y coordinates. I need to have all of the x and y coordinates in order to later use it in a different code, where i use Fourier Transform and Epicycles in order to trace this image.

Can somebdy please help me to retrieve all of the x and y coordinates for the traced image.

Many thanks

Answer 1

[KSSV]

I = imread("image.jpeg") ; 
[y,x] = find(I~=255) ; 
coor = [x  y] ; 

[Image Analyst]

You mean

if ndims(I) == 3
    I = rgb2gray(I); % Convert to gray scale if needed.
end
[y, x] = find (I ~ = 255); 
coor = [x, y]; % Comma is needed

[KSSV]

Yes, I meant.

coor = [x y] ; 

But, today mathworks link is behaving wierd. It is creating extra spaces or removing the spaces after updating the answer.