If you set up a Google+ profile you can set the Google+ app to automatically back up all your photos to G+. These are private by default. They are available in drive from there. Not sure it's what you're wanting but it is the closest solution for you I can come up with.
I haven't played with it much, but any time I take a picture eventually I get a Notification from Google + that I have a picture available to share. Touching on that notification brings up all my pics I've taken.