Hi
The pictures may have been damages by the delete and recover process, do you have some other graphic program that you can try and open them in? Try Windows Paint if you don't have Photoshop or something like that.
Also try and save them in a different format in Windows Paint and see if it will do it i.e. save them as a .bmp file.
And if it will see if it makes any difference when you open them.
Mike