Selective Quality Rendering by Exploiting Human Inattentional Blindness: Looking But Not Seeing

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Selective Quality Rendering by Exploiting Human
Inattentional Blindness Looking But Not Seeing

• Kirsten Cater Maria Karipoglou
• PhD Supervisor Alan Chalmers Tom Troscianko
• Department of Computer Science
• University of Bristol

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Realistic Computer Graphics

• Major challenge achieve realism at interactive
  rates
• How do we keep computational costs realistic?

• HVS - Good but not perfect!

• Limitation in the human visual system
• Inattentional Blindness this is the failure to
  see unattended items in a scene.

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Magic trick to Demonstrate Inattentional Blindness

• Please choose one of the six cards below.

Focus on that card you have chosen.
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Magic trick (2)

• Ive shuffled the cards and removed the one which
  I think was your card.

Can you still remember your card?
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Magic trick (3)

• Here are the remaining five cards, is your card
  there?

Did I guess right? Or is it an illusion?
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Magic trick The Explanation

• You just experienced Inattentional Blindness
• None of the original six cards was displayed!

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Exploit Limitations in the Human Visual System

• Use Psychophysical Experiments to identify
• that IB occurs in real and virtual environments.
• level of tasks (strong/medium/weak) vs. amount of
  rendering quality needed.
• what happens when distracters are introduced to
  the scene.

Selective Renderer renders the computer
graphical scene according to the level of task
and amount of detail needed.
Goal Save computational time rendering realistic
computer graphics
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Overall Conclusion

• By taking advantage of these flaws in the human
  visual system we can dramatically save on
  computational time by selectively rendering the
  scene where the user is not attending.
• Thus for VR applications where the task is known
  a priori the computational savings, by exploiting
  these flaws, can be dramatic.