Question 4 In colour vision what is the Purkinje shift (dark adaptation)? O A move in colour sensitivity towards the blue end of the visible spectrum in low light conditions O The ability to see colours well at night O A physical shift of the retina to be closer to the lens in low light conditions O The reason we see red light more intensely at night Question 5 The advantage of the YCrCb colour model over the RGB representation is that: O It allows more colours to be represented O It takes up less space O It allows animation O It splits intensity from colour information Question 6 JPEG makes use of the fact that human vision is very sensitive to small variations in brightness/colour and less sensitive to the strength of high-frequency brightness changes. This means tha O We are good at seeing small colour changes between neighbouring pixels O We can not see high-frequency changes in the image O Low frequency changes appear as edges in the image O High frequency changes appear blurred o o o

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Q6 answer please
Question 4
In colour vision what is the Purkinje shift (dark adaptation)?
O A move in colour sensitivity towards the blue end of the visible spectrum in low light conditions
O The ability to see colours well at night
O A physical shift of the retina to be closer to the lens in low light conditions
O The reason we see red light more intensely at night
Question 5
The advantage of the YCrCb colour model over the RGB representation is that:
O It allows more colours to be represented
O It takes up less space
O It allows animation
O It splits intensity from colour information
Question 6
JPEG makes use of the fact that human vision is very sensitive to small variations in brightness/colour and less sensitive to the strength of high-frequency brightness changes. This means that:
O We are good at seeing small colour changes between neighbouring pixels
O We can not see high-frequency changes in the image
O Low frequency changes appear as edges in the image
O High frequency changes appear blurred
o o o o
Transcribed Image Text:Question 4 In colour vision what is the Purkinje shift (dark adaptation)? O A move in colour sensitivity towards the blue end of the visible spectrum in low light conditions O The ability to see colours well at night O A physical shift of the retina to be closer to the lens in low light conditions O The reason we see red light more intensely at night Question 5 The advantage of the YCrCb colour model over the RGB representation is that: O It allows more colours to be represented O It takes up less space O It allows animation O It splits intensity from colour information Question 6 JPEG makes use of the fact that human vision is very sensitive to small variations in brightness/colour and less sensitive to the strength of high-frequency brightness changes. This means that: O We are good at seeing small colour changes between neighbouring pixels O We can not see high-frequency changes in the image O Low frequency changes appear as edges in the image O High frequency changes appear blurred o o o o
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