VR information at the Beginner level
Are you ready for a journey to Virtual Reality?
Journey to Virtual Reality
Hello there,
in this story, I am going to talk about Virtual Reality. These are some of my notes from the VR course by Prof. Dr. Gabriel Zachmann at Bremen University.
Contents:
· What is Virtual Reality?
· What is immersion?
· What is presence?
· Resource
What is Virtual Reality?
Virtual reality refers to the use of devices that allows us to see and interact with 3D virtual objects in a virtual environment and while we are doing this in real-time, it manipulates our multi-sensory and reasons to experience immersion.
What is immersion?
It is a disconnection from the real world by stimulating all sense organs.
As you guest, to stimulate all sense organs, we need fidelity. It is about how much it is realistic.
Fidelity has 3 important components.
★ Rendering fidelity
- Visual rendering (image resolution, detailed textures, correct lighting, and so on)
- Haptic rendering
- Auditory rendering
★ Interaction fidelity
★ Simulation fidelity (level of realism of behavior of virtual objects)
Higher fidelity (all 3 kinds) often results in higher effectiveness.
Best cases for high fidelity:
▹Difficult and complex visuo-spatial tasks
▹Learning and training
▹High-DOF interaction tasks
What is presence?
When you try VR and the immersion of the virtual environment is high but you are aware that you are not there, this is presence.
There are two orthogonal illusions.
✓ Place illusion (PI) = “being there” = illusion of “being in a place, in spite of the sure knowledge that you are not there”
✓ Plausibility illusion (Psi) = “this is really happening” = illusion of “what is apparently happening is really happening, in spite of the sure knowledge that it is not”
Neuroscientific explanation of the emergence of the feeling of presence?
Observation matches the brain’s predictions → feeling of presence
Observation and prediction mismatch → break in presence
Then, the brain needs to focus attention on the discrepancy to deal with it
Author: Ali Eren Kayhan
Publication: Not Tutuyoruz
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Sonra görüşürüz,
See you later,
Bis später.
