How To Remove Pixelate??
Q: I have one photo with pixelate, but I want to remove it. Is that possible??
A: No, it cannot be undone unless of course the effect was done by you and put on a separate layer.
You can actually gain some resolution in a photo by sizing it down, but unless it is huge to begin with you wont be able to see much detail because it will be so small.
To size down go to the Image menu and choose Resize>Image Size…
In the Document Size area of the Dialog box you can change the width and height. Make sure you have Constrain Proportions and Resample Image checked at the bottom of the Dialog box.
That's about the best I can do on this one.