You can use an ipod to computer transfer program to help.I personally use Cucusoft iPad/iPhone/iPod to Computer Transfer.It helps me to transfer my songs/videos/photos/playlists etc from ipod to my computer directly and safely.It works well for me,you can give it a try.
real purchase it at: http://www.dvd-video-soft.com/ipodconverter/ipod-itouch-iphone-transfer.html

It even has step-by-step guide on the whole process.
Hope it helps.
You can use http://www.google.com to search more

When your ipod is plugged in to your computer, go to the 'Computer' of your PC part where all the devices are listed. Double click on your Ipod (it should be there) and the photos will be in there somewhere, probably under the name of something like 'Photos' or 'Photo Cache.'

Right click and save them. It might not let you do that though, in which case you will have to drag them to wherever you want to put them, but clicking on them and moving the mouse to wherever it is you would like.

Hope this helps.

If you have an Ipod like my one, photos should transfer automatically. Just in case, when in Itunes, ensure that you click on 'Photos' when your Ipod is plugged in and tick the box to syncronise them.
Beware, this will have a big affect on space.