Challenges in VR - Quiz 5 - Introduction to Virtual Reality https://www.coursera.org/learn/introduction-virtual-reality/exam/SOsQ6/challenges-in-vr/attempt

quiz5.txt

Challenges in VR
TOTAL POINTS 5
1.
Question 1
Which is the cheapest lighting effect to render?
1 point


@ Diffuse


Specular


Glossy/mirror
2.
Question 2
Illumination: what is the difference between Global Illumination and Local Illumination?
1 point


Global Illumination only takes into account the ambient light; Local illumination takes into account other types of light sources (for instance, point light and direction light).


@ In Local Illumination, each object is lit from only the light source directly while Global Illumination takes inter-object reflections into account.


In Global Illumination, each object is lit from only the light source directly while Local Illumination takes inter-object reflections into account.


Local Illumination only takes into account the ambient light; Global illumination takes into account other types of light sources (for instance, point light and direction light).
3.
Question 3
Currently a VR controller from HTC VIVE or Oculus supports the following haptic feedback:
1 point


@ Vibration


Force


Tactile


Gravity
4.
Question 4
What are the challenges in social VR?
1 point


@ We are all critical observers of human social interaction


@ It's difficult to track facial expression behind the HMD


@ It's hard to track subtle facial expressions


Speech to text is still impossible in VR
5.
Question 5
What can be animated with particle systems?
1 point


Facial expression


Navigation


@ Fire