Visual Perception -DIP QUIZ2

Which of the following is a receptor in the retina of human eye?

• Rods
  

• Cones
  

• Rods and Cones
  

• Neither Rods nor Cones

How is image formation in the eye different from that in a photographic camera

• No difference
  

• Variable focal length
  

• Varying distance between lens and imaging plane
  

• Fixed focal lengt

Range of light intensity levels to which the human eye can adapt (in Log of Intensity-mL)

• 0^-6 to 10^-4
  

• 10⁴ to 10⁶
  

• 10^-6 to 10⁴

• 10^-5 to 10⁵

What is subjective brightness?

• Related to intensity
  

• Related to brightness
  

• Related to image perception
  

• Related to image formation

Answer explanation

It is the intensity as perceived by the human eye.

What is brightness adaptation?

• Transition from scotopic to photopic vision

• Changing the eye’s imaging ability
  

• Changing the eye’s overall sensitivity
  

• Adjusting the focal length

Answer explanation

The human eye a wide dynamic range by changing the eye’s overall sensitivity and this is called brightness adaptation.

The inner most membrane of the human eye is

• Blind Spot
  

• Sclera
  

• Choroid
  

• Retina

The absence of receptors is in the retinal area called _____________

• Lens
  

• Ciliary body
  

• Blind spot
  

• Fovea

What is the function of Iris?

• Source of nutrition
  

• Detect color
  

• Varies focal length
  

• Control amount of light

The principal energy source for images in use today is the ___.

• x-ray
  

• B-ray
  

• electromagnetic energy spectrum
  

• laser ray

___vision is called photonic vision.

• Cone
  

• fovea
  

• retina

• focal length