I would just write a quick wrapper function for ginput - you'll never even know!
%Call it with this
I = imread('cameraman.tif');
imshow(I);
[ii jj] = ginputij(I,2)
Here's a wrapper:
function [ii jj b] = ginputij(I,n)
%Function ginputij: ginput which returns matrix coordinates for upper right hand origin
%SCd 06/16/2011
%
%Inputs:
% -I: image
% -n: optional number of clicks
%
%Outputs:
% -ii: index rows of image selected
% -jj: index columns of image selected
% -b: button used
%
%See Also: ginput imshow
%
if nargin==1
n = 1;
elseif nargin~=2
error('1 or 2 input arguments expected');
end
[x y b] = ginput(n);
jj = size(I,2)-x;
ii = y;
end
Note: I;m using columns and rows instead of x/y swap them if you want...
