STUPIDSID
1 (a)
Prove that Highpass: Original - Lowpass.
5 M
1 (b)
Extreme contrast straching is thresholding.
5 M
1 (c)
Explain discrete time systems with example.
5 M
1 (d)
Differentiate between spatial resolution & tonal resolution.
5 M
2 (a)
x(t) = sin (480 πt) + 3sin(720 πt) is sampled with Fs=600 times per second.
i) What are the frequencies in radians in the resulting DT signal x[n]?
ii) If x[n] is passed through an ideal interpolator, what is the reconstructed signal.
i) What are the frequencies in radians in the resulting DT signal x[n]?
ii) If x[n] is passed through an ideal interpolator, what is the reconstructed signal.
10 M
2 (b)
Perform following operations on given signal.
x(n)={1, 2, 3, 5}
i) x(-n -1)
ii) x(n-2)
iii) x(n+1)
iv) x(-n +2)
v) 2x(n).
x(n)={1, 2, 3, 5}
i) x(-n -1)
ii) x(n-2)
iii) x(n+1)
iv) x(-n +2)
v) 2x(n).
10 M
3 (a)
Obtain four directional chain code & shape representation of following image.
5 M
3 (b)
"Classify the signal as energy or power signal \[ x(n) = \left\{\begin{matrix}
\left ( \frac {1}{2} \right )^n & n \ge 0 \\ (2)
^n & n \le 0
\end{matrix}\right. \]"
5 M
3 (c)
"Consider the image given below. Calculate direction of edge at the centre point of image. \[ I = \begin{bmatrix}
50 &80 &70 \\5
&50 &90 \\7
&9 &50
\end{bmatrix} \]"
10 M
4 (a)
"For the following binary image perform morphological operation opening followed by closing. \[ A= \begin{matrix}
1 &0 &1 &0 &1 &0 &1 \\1
&1 &0 &1 &1 &0 &1 \\1
&1 &1 &1 & 1 &1 &1 \\1
&1 &1 &1 & 1&0 &0 \\1
&1 &0 &1 &1 &1 &1
\end{matrix} \ \ B = [(1) \ 1\]"
10 M
4 (b)
Derive Fast Walsh Transform Flowgraph for N=4.
10 M
5 (a)
If x[n]={1, 2, 3, 4} & h{n} = {1, 7}
Find linear convolution using circular convolution.
Find linear convolution using circular convolution.
10 M
5 (b)
Compare lossless and lossy comparison techniques.
5 M
5 (c)
Object detecting using correlation principle.
5 M
Write short notes on any two:
6 (a)
Digital watermarking with application.
5 M
6 (b)
Sampling & quantizations.
5 M
6 (c)
Explain various frequency domain law pass filters in detail.
5 M
7 (a)
Perform histogram stretching 50 that the new image has a dynamic range of [0, 7].
| Gray level | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| No. of pixel | 80 | 90 | 75 | 100 | 0 | 0 | 0 | 0 |
10 M
7 (b)
State & prove any four properties of DFT.
10 M
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