I am assuming you mean pictures back that you deleted on the phone? If yes, then you 'might' be able to get the data back, but that is only a 'might' be able to. Once things are deleted on a device, there is no guarantee that any of it will be recoverable.
There are actually a few apps/programs out there that "may" be able to help you recover the data.
A few of the programs you could try would be... DiskDigger, MobiSaver, Android-Recovery and Tenorshare. They are all data recovery apps/programs. There are many others out there, so check around and see which you would rather try.
One important note though, most of these programs are not free. They may say they are "free" or have "Free Trials" and "Free Downloads". Yet to actually...