1.
If you have a 16x16
pixel image with each luminance or chrominance value taking 1 byte (i.e., y, u,
v each taking 1 byte per pixel). How many bytes would the image take?
Ø
using a 4:4:4 sampling
Ø
using a 4:1:1 chroma
sampling
Ø
using a 4:2:0 chroma
sampling
2.
What is the entropy of a
source with M symbols where half
of the symbols have a probability of occurrence of p and the other half have a probability of q?
3.
Answer
a.
What is the aspect ratio
for HDTV?
b.
Give the formula for Entropy
of a source as defined by Shannon.
Define the terms in the formula.
c.
What is the prefix
property?
4.
Answer [true or false / fill blanks]
The brighter the still image presented to the viewer, the longer the persistence of vision.
b. The optimal viewing distance (for TV) is expressed in
terms of the height of the screen.
c.
Digital video always
uses composite video.
d.
Shannon-Fano algorithm
is a significant improvement over Huffman.
e.
Both Shannon-Fano and
Huffman algorithms exhibit the prefix property.
f.
The units of entropy are
_____________