how to find coordinates of specific pixel l value?

hello all,

i want to find the x,y coordinates of specific pixel value. how i can find that.kindly guide me thanks.

see attach image. this represts the pixel values of binary image, now i want to find x,y coordinates of these pixel values only.

Answer 1

[Roy Kadesh]

[row,col]=find(BW3==1);

depending on your image orientation, either row is x, or col is x.

[Image Analyst]

No.

If the row is x you're violating a pretty strong convention of having x be the horizontal direction and y be the vertical direction.

What you have is correct:

[row,col]=find(BW3==1);

but you could also do

[y, x] = find(BW3);  % Note: y comes first!  It's not [x,y].

if you follow the universal convention of x being the horizontal (column) direction, and want to use x,y nomenclature instead of row, column nomenclature.