It's impossible to be sure how another individuals brain represents the world. For all we know, they way they sense depth and up and down might be completely different. The representation of colour could be completely different. Both individuals could explain it as images, but if it were possible to move another individuals representation into another individuals brain - it's likely the other individual would experience an abstract sensation that would be difficult to compare to anything else that individual has experienced.
It could well be like having a compass attached to your body, sending nerve signals to your brain. You would not understand how to interpret it unless your brain has plenty of time to associate the stream of signals of direction with other signals such as your balance, vision and audio.
The brain is a very complex organ, and it probably starts out like a tiny, one celled blank sheet of paper. That blank sheet of paper is receiving continous streams of electronic signals from the various sensory organs of the body. Over time, synapses between your neurons will bond with other synapses, due to both of them receiving signals simultaneously. For example, if you are listening to music, you will hear various frequencies. Usually there will be a drum beat, which you will also sense as vibrations in the floor and your stomach. The neurons handling those two different signals will then bond together, so that at a later time - when you sense bass signals in the floor, but not in your stomach and by your ears - your brain will still recognize that drum beat in the floor as music. Some people might even feel like they hear the music.
The nerves are then going from the sensor to the brain in various ways and paths, and those connections are different for everybody.
Your brain will visualize stuff your way, and other people will visualize stuff their way and I believe those representations of objects and things are completely different for everybody. The representations will be compatible among different people, in such a way that physical laws are obeyed - but that is because the brain alters representations according to previous experiences.
So, knowing that it is impossible to be sure, I really do believe that everybody represents sensations completely different. They will be handled in similar regions of the brain due to physical similarities of the body, but within those regions in the brain there will be huge differences in representations.
I believe that if a human, unknowingly had a compass operated into his body at birth and connected to an arbitrary nerve, then that human would experience a heightened sense of direction that it could not explain as an adult. If another human had an identical compass attached to a completely different part of his body and connected to perhaps the nerve going from one of the ears, then that human would experience the same sense of direction.
Disclaimer; I am a computer programmer with a keen interest in virtualized intelligence - I have no education in the area of biology. :-)