Did you backup the images to another location? Are the images still in the trash? If not, then I'm afraid you're out of luck.
maybe there is a little helper, if you didn't work to much on your harddisk. It's called "freeundelete" and I quote "FreeUndelete restores deleted files, including those removed from Windows Recycle Bin." I hope the moderator allows "Read more at: https://tr.im/jplDW".
I used it already with great seccess after a harddisk crash.