As I know Dataflow profiles export only image names or partial image path with sub-folders like - i/m/image_name.jpg
So you can export the images using Dataflow and then open the file in Excal and add to each image full path.
In case you do not want to spend hours on that I can offer you to export the images via the desktop application for Magento store management, which is called Store Manager for Magento. It has the option to export full image path to the file.
There is 2-weeks free version, which you can download here -
In case any other users have any idea how to export full image path via default Magento import method, please, share it.