how do you access internal storage files from a backup on your pc (Dcim files)

I backed up my iphone to my PC. Later I opened up my computer files with the name I saved my backup of my photos on.

I located the file name and see the folder; I click the folder; it opens another folder named; Internal Storage; I open this file and there is another folder named; DCIM; I click this folder then theres 2 folders named with numbers which appear to have photo images; however when I click on either folder there empty.

How do I access the photos that were transferred from my ipod and deleted from ipod after transfer of photos in my computer????