Question: how to recover permanently deleted photos from ipod touch?
Answer: Open your Photos app.
Tap on the Albums menu to open the list of albums.
Tap on Recently Deleted. You see a list of photos. ... 
When the photo opens, you can tap on Recover (bottom-right.)
The photo will be restored to the original album it was in. Most of the time, you're going to see that photo in Recently Added.