How to compare two images and display the difference on Front Panel

HI..
I have attached two images.
I want to compare these two images and subtract the differenc from these two images and display the difference(the mouse) on the front panel
Anyone can help me?
Really thanks
Attachments:
IMG_2117.JPG ‏1677 KB
IMG_2118.JPG ‏1650 KB

The missing thing. You have to keep in mind that what you see is not the same as the camera sees.
So when using IMAQ Substract it gives you the difference of the value of every single pixel!
In order to find the mouse as only difference you have to manage that every other pixel value stays the same, e.g. with a proper lightening.
At the other hand you can combine different filters or alogorithms to get the object, e.g. if the object is darker or brighter then everything else in the image you could use a threshold and then use morphologic operations to get the objects size and position.
Christian

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