STUPIDSID
1 (a)
Laplacian is not good edge detector. Justify.
5 M
1 (b)
Discuss the properties of Region of Convergence.
5 M
1 (c)
Convolution in one domain leads to multiplication in other domain.
5 M
1 (d)
Walsh transform is nothing but sequence Orderd Hadamard Transform Matrix Justify.
5 M
2 (a)
Construct following gray scale quantization code for given level data set.
{100, 110, 124, 130, 200, 210}
{100, 110, 124, 130, 200, 210}
10 M
2 (b)
Find the following sequence are periodic or no. If yes, find the fundamental time period-
(i) x1(n)=3sin(0.01 ?n)+4cos(10 n)
(ii) x2=cos(0.01 ?n)
(i) x1(n)=3sin(0.01 ?n)+4cos(10 n)
(ii) x2=cos(0.01 ?n)
10 M
3 (a)
Determine the system function and unit sample response of the given system described by following difference equations :
\[y(n)= \frac{1}{4} y(n-2)+\frac{1}{2}y(n-1)+x(n)\]
\[y(n)= \frac{1}{4} y(n-2)+\frac{1}{2}y(n-1)+x(n)\]
10 M
3 (b)
Find cross-correlation between given signals.
x(n)={1,0,1,2}
y(n)={1,2,3,4}
x(n)={1,0,1,2}
y(n)={1,2,3,4}
5 M
3 (c)
Find auto-correlation of following signal
x(n)={1,1,2,3}
x(n)={1,1,2,3}
5 M
4 (a)
Compute DFT of the given image using DIF-FFT technique
| 0 | 1 | 2 | 1 |
| 1 | 2 | 3 | 2 |
| 2 | 3 | 4 | 3 |
| 1 | 2 | 3 | 2 |
10 M
4 (b)
Explain the process of image segmentaion using different methods.
10 M
5 (a)
Specify DCT basis functions and construct transform matrix for an image.
10 M
5 (b)
Obtain the digital negative of the following 8 bits per pixel image.
| 121 | 205 | 217 | 156 | 151 |
| 139 | 127 | 157 | 117 | 125 |
| 252 | 117 | 236 | 138 | 142 |
| 227 | 182 | 178 | 197 | 242 |
| 201 | 106 | 119 | 251 | 240 |
10 M
6 (a)
Perform Histogram Equalization on the given image transform
| Gray Level | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Number of Pixel | 70 | 100 | 40 | 80 | 60 | 40 | 08 | 02 |
10 M
6 (b)
Write 8 x 8 Walsh transform matrix and draw its signal flow graph
10 M
Write short noes on (any four) :-
7 (a)
Hough transform
5 M
7 (b)
Wavelet Transform
5 M
7 (c)
Classify and define discrete time systems
5 M
7 (d)
Homomorphic filtering.
5 M
7 (e)
State and prove convolution property of Z-transform.
5 M
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