ELI5: Explain Like I'm 5

Focus recovery based on the linear canonical transform

Okay kiddo, imagine I have a special camera that takes pictures but sometimes the pictures come out blurry. That's because the camera has trouble focusing on the right thing. But don't worry, there's a way to fix it called focus recovery based on the linear canonical transform.

Now, focus recovery is like putting on glasses that help you see better. The linear canonical transform is like a magic trick that turns the blurry picture into a clear one.

Let me explain it this way - Do you know about puzzles? Imagine you have a puzzle that is all mixed up and you can't see the picture. But if you move the pieces around in the right way, you can see the whole picture. That's what the linear canonical transform does. It moves the pixels in the picture around in a special way, so that we can see a clear picture.

So, when we use focus recovery based on the linear canonical transform, we take the blurry picture and do some magic to the pixels so we can see the picture clearly. It's like a special kind of puzzle that helps us unblur the picture.

I hope that makes sense, kiddo!