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M.E/MM.TECH DEGREE END SEMESTER EXAMINATIONS,APRIL/MAY 2010

MULTIMEDIA TECHNOLOGY

SECOND SEMESTER (REGULATION – 2009)

CP9167 DIGITAL IMAGE PROCESSING

Time : 3 Hrs                                                                                                     Max. Marks : 100

Answer ALL Questions

PART A  ( 10 x 2 = 20 Marks)

1.      What is the role of MTF in quality assessment?

2.      Consider two pixels p and q whose coordinates are (0, 0) and (5, 5). Calculate De, D4 and D8 distances between the pixels p and q.

3.      What is the difference between Image enhancement and Image restoration?

4.      List at least four properties of Fourier transform.  

5.      What is meant by isotropic filter?

6.      What is meant by feature reduction? How is it done?

7.      What is meant by entropy? What is its relevance in image processing?

8.      What is the procedure for continuous wavelet transform?

9.      What is procedure for finding the discriminant decision function?

10.  What is the difference between classification and clustering?

PART B  ( 5 x 16 = 80 Marks)

 

     11. a. Consider the following image

 

 

4	4	4	4	4
3	4	5	4	3
3	5	5	5	3
3	4	5	4	3
4	4	4	4	4

 

Write a procedure for histogram equalization and apply equalization to the above

image.                                                                                                               (8+8)

 

b. Write a detailed algorithm for obtaining FFT?

 

1. a. Explain in detail the homomorphic filtering with an example.

 

(OR)

 

            b. Explain in detail the construction of Wiener filter.

 

 

1. a. Explain in detail the graph theoretic edge linking algorithm with an example.

 

 

(OR)

 

b. Explain in detail the morphological operators and the applications of it in at least two practical applications.

 

       14. a. Construct an arithmetic coding with the following data

 

Character	A	B	C	D
Probability	0.3	0.4	0.2	0.1

 

          Encode the text ABCD and explain how that can be decoded.

 

(OR)

 

 

        b. Explain briefly the JPEG compression standard and its various modes.

 

     

15. a. Perform the hierarchical clustering for the following data and explain the role of clustering in pattern analysis and recognition.

 

SNo	X	y
1	3	3
2	6	5
3	12	8
4	22	12
5	24	8

 

(OR)

 

               b. Write short notes on

 

a.       Steganography

b.      Image Fusion.                                                       (8+8)

 

 

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