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Digital Image Processing Question Paper - May 2015 - Electronics Engineering (Semester 7) - Mumbai University (MU)

written 7.8 years ago by teamques10 ★ 70k

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written 7.8 years ago by teamques10 ★ 70k

Digital Image Processing - May 2015

MU Electronics Engineering (Semester 7)

Total marks: --
Total time: -- INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) What do you mean by zero memory operations? 5 marks

1 (b) Differentiate between 8 connectivity and m connectivity. 5 marks

1 (c) What is truncated Huffman code? 5 marks

1 (d) Justify the statement: "Laplacian filter is a high pass filter". 5 marks

2 (a) Explain the following enhancement operations and draw the graph of transformation function:
i) Dynamic range compression
ii) Gray level slicing. 5 marks

2 (b) Perform histogram equalization on the following image histogram and plot original and equalized histograms.

Gray Level	0	1	2	3	4	5	6	7
Number of pixel	550	300	0	0	0	200	325	225

5 marks

3 (a) Explain in detail the types of data redundancies seen in digital images. 5 marks

3 (b) Explain the method of edge linking using Hough Transform. 5 marks

4 (a) "Calculate the 2DDFT and Hadamard transform of the image segment shown below using matrix multiplication method. $$f(x,y)=\begin{array}{cccc}0& 0& 1& 4\\ 1& 1& 1& 4\\ 1& 0& 1& 0\\ 0& 2& 0& 2\end{array}$$<script type="math/tex; mode=display" id="MathJax-Element-1"> f(x,y)= \begin{matrix} 0 &0 &1 &4 \1 &1 &1 &4 \1 &0 &1 &0 \0 &2 &0 &2 \end{matrix} </script>" 5 marks

4 (b) Explain the importance of kernel separatility property of 2DDFT in implementing 2DFFT. 5 marks

4 (b) Differentiate between spatial and tonal resolution. 5 marks

5 (a) Explain why it is difficult to threshold images with poor illumination. 5 marks

5 (b) With the help of neat block diagram, explain the working of homomorphic filter. 5 marks

6 (a) What are fourier Descriptors? Explain how a two dimensional boundary is represented using Fourier Description. 5 marks

6 (b) Explain how Huffman code removes coding redundancy. 5 marks

Write short notes on any four of the following:

7 (a) Moments 5 marks

7 (b) Wavelet transform 5 marks

7 (c) Digital water marking 5 marks

7 (d) Biometric authentication 5 marks

7 (e) Motion based segmentation. 5 marks

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