Manual object counter inside an image

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Ely Raz
Ely Raz 2014-1-6
评论： Ely Raz 2014-1-7
Hi
How can I program a very simple manual counter on top of an image that I show (GUI). Basically, I wish to load an image to a axes and every time I click the mouse a point and its counting number appears next to it.
Thanks.

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Image Analyst
Image Analyst 2014-1-6
From the help:
[x,y] = ginput gathers an unlimited number of points until you press the Return key.
Put some code in like this (untested)
message = sprintf('Click points.\nHit return when done.');
button = questdlg(message, 'Continue?', 'Yes', 'No', 'Yes');
drawnow; % Refresh screen to get rid of dialog box remnants.
if strcmpi(button, 'No')
return;
end
[x,y] = ginput();
count = length(x);
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Image Analyst
Image Analyst 2014-1-6
编辑：Image Analyst 2014-1-6
Only after it's done when you can say
plot(x, y, 'r+', 'MarkerSize', 24, 'LineWidth', 3);
If you want it to mark after each one you'll have to put ginput(1) inside a while loop
% Display an image.
imshow('moon.tif');
hold on;
% Initialize counter.
count = 0;
message = sprintf('Click as many points as you want.\nHit return when done.');
title(message, 'FontSize', 20);
button = questdlg(message, 'Continue?', 'OK', 'Cancel', 'OK');
drawnow; % Refresh screen to get rid of dialog box remnants.
if strcmpi(button, 'Cancel')
return;
end
% Begin loop where user clicks points over display (plot or image or whatever).
while count < 1000 % or whatever failsafe you want.
% User clicks one point. If user types Enter/Return, x is empty.
[x,y] = ginput(1);
if isempty(x)
break;
end
% Put a cross over the point.
plot(x, y, 'r+', 'MarkerSize', 24, 'LineWidth', 3);
% Increment the count.
count = count + 1
% Save coordinates (if desired).
allX(count) = x;
allY(count) = y;
end
Please mark as Accepted if this answers your question.
Ely Raz
Ely Raz 2014-1-7
Hi,
A question about the script above (I click the mouse for marking and enter when I am done). Is it possible to mark by mouse left clicking and when finish mouse right clicking?
Thanks.

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