Unfortunately, you cannot recover in normal way.
Your chances may be very poor by now. You need to recover files located in the following location:
But, if this pictures are important enough, it's worth a try anyway. Stop using the computer in question immediately, if you haven't done so already. Download an data recovery software and try to recover:
R-Studio - http://www.r-tt.com/
Recuva - http://www.piriform.com/recuva
Restoration - http://www..telus.net/mikebike/RESTORATION.html
PCInspector File Recovery - http://www.pcinspector.de/file_recovery/welcome.htm
Executive Software “Undelete” - http://www.undelete.com/undelete/undelete.asp
Asoftech Photo Recovery - http://www.asoftech.com/apr/
If this fails, your only other recourse is to take or send the drive to a professional file recovery company. This kind of service is very expensive and may or may not work in your case.
"Deleting" a file doesn't actually delete it; it just marks the space as available to be used.
There are third-party programs that can sometimes recover deleted files. The problem is that the space used by the file is likely to become overwritten very quickly, and this makes the file unrecoverable.
So your chances of successfully recovering this file are decent if you try recovering it immediately after deleting it, and rapidly go downhill from there.