Pictures are missing in Internal memory in Samsung Galaxy Tab 2
Well, I would like to ask you one more thing, I don't think the files images and videos created inside the DICM folder at least I can't see it over my device and yes it's also GT-P3100 but running 4.2.2. I would say if you are trying to recover things then why don't you try recovering your data using "Recuva" I have tried using it a number of times to recover some of my images. So, it does seems okay try giving it a shot if you're luck is good enough then I am sure you can get at least some of your images back.