HW1, EECS 203A
Fall 2004. UCI
by Nasser Abbasi
Problem 2.10
statment
Problem 2.10 solution
First calculate the number of pixels in each frame.
Since this is interlaced, then one frame is made up of two fields each is
pixels,
and each is
seconds long. (2 fields make up one frame)
Hence number of pixels in
seconds
pixels
Hence number of pixels in one second (using 30 fps)
pixels
Then using 24 bits per pixel, we get
bits/second.
Then
2 hrs will require
bits or
HW1, Problem 2.19
ECS 203A.
Nasser Abbasi
Problem:
Show that an operator that computes median of a subinage area S is nonlinear.
Solution:
An operator
is linear if
To show that median is nonlinear operator, only need to provide one example of such case.
Conside image
given by
and
given by
Let
and
(since definition is valid for any scalars
)
Apply the median operator on
and
So
Now add the two images togother (addition is by element to element) we get
So
Compare (1) and (2) above we see they not equal.
Hence the operator
(median) is not linear.