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

[Min1992]

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

[Christian Mergl]

In theory you could use "IMAQ Substract.vi". But this won't work with your images because almost every sinlge pixel is different from one image to the other one.

Christian

[Min1992]

Yes, I have tried already, the only thing i got is the differences of two images display in the front panel. In my program what i want is only the missing thing display in front panel. Is there anyone can help me please?

[Christian Mergl]

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