Output image and patch as new image

I have an image that I put a transparent patch over. I would like to now "merge" the image and the patch into a new image, which I can call later. I've tried setting the patch to a variable and using imshow to show this image, but that does not work because the variable is only a number, not an image matrix. I would like to know if there is a way to do this and if there is, how.

Thank you.

Answer 1

[Matt Fig]

Use GETFRAME to capture what you see on the axes.

For example:

X = load('clown');
X = ind2rgb(X.X,X.map);
image(X) % Show the clown.
patch([50,150 150 50],[50 50 20 20],'b')  % Make a patch

F = getframe(gca);
figure
image(F.cdata) % Show the new image in new figure...

[Alba]

I'm using a while loop where if statements determine the color of the patch. When I try to use this method, it only copies the original image and not the new patched one. Do you know how to get around this?

my code is linked below:

http://pastebin.com/w76Zhaa1

[Matt Fig]

This is a result of your using Alpha properties of the patch. You will notice that the problem disappears if you leave Alpha alone.

[Matt Fig]

I find the problem can be fixed by issuing this command at the beginning of your function:

opengl('software')

[Alba]

Thank you very much! It worked perfectly.