STUPIDSID
Solve any four Q1 (a,b,c,d,e)
1(a)
Justify the statement "Quality of picture depends on the no: of pixels and the no: of gray level representing the pictures".
5 M
1(b)
Explain RGB color model to represent a digital image.
5 M
1(c)
Can two different images have the same histogram? Justify your answer.
5 M
1(d)
Define chain codes in 4-connectivity and 8-connectivity.
5 M
1(e)
Compare arithmetic coding and Huffinan coding.
5 M
2(a)
Apply the following Image Enhancement techniques for the given 3 bits per pixel image segment.\( 1=\begin{bmatrix}
2 & 1 & 2& 1& 0\\
7 & 1 & 4& 3& 2\\
2& 4& 1& 3& 7\\
1& 3& 4& 6& 3\\
1& 4& 1& 3& 4
\end{bmatrix} \)/
i) Digital Negative
ii) Bit plane Slicing
iii) Thresholding with T=5
i) Digital Negative
ii) Bit plane Slicing
iii) Thresholding with T=5
10 M
2(b)
Perform histogram equalization and plot the histograms before and afte equalization.
| Gray level | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| No.of pixel | 128 | 75 | 280 | 416 | 635 | 1058 | 820 | 684 |
10 M
2(b)
Explain various image enhancement techniques in frequency domain.
10 M
3(a)
Givethe 7×7 Image segment,perform diation using the structuring element shown: Structuring element:
| 1 | 0 |
| 0 | 1 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 1 | 0 | 1 | 0 |
| 0 | 1 | 0 | 1 | 0 | 1 | 0 |
| 0 | 1 | 0 | 1 | 0 | 1 | 0 |
| 0 | 1 | 1 | 1 | 1 | 1 | 0 |
| 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 0 | 0 | 0 | 1 | 0 | 0 | 0 |
10 M
3(b)
Explain image segmentation based on similarity with help of examples.
10 M
4(a)
A source emits 6 symbols with the following probabilities. Construct the Huffman code and calculate the average code word length and coding efficiency.
| Symbol | A | B | C | D | E | F |
| Probability | 0.2 | 0.3 | 0.06 | 0.15 | 0.04 | 0.25 |
10 M
4(b)
Explain with block diagram the transform based coding.
10 M
5(a)
Check whether the DFT matrix is unitary or not and calcuate the 2D-DFT of the given image segment using matrix multiplication method \[f(x,y)=\begin{matrix}
0 & 0& 0 & 1\\
1 & 2& 0& 0\\
1 & 0& 1& 1\\
2& 0& 2& 0
\end{matrix}\]
10 M
write a short note any two Q6.(a,b,c,d)
6(a)
Hit or Miss Transformation
10 M
6(b)
Discrete Wavelet Transform
10 M
6(c)
Thresholding techniques
10 M
6(d)
Image file format
10 M
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