MU Computer Engineering (Semester 7)
Image Processing
December 2015
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


Answer the following.
1 (a) What do you understand by zero memory operation.
5 M
1 (b) Discuss different discontinuities in image.
5 M
1 (c) What is an Unitary matrix.
5 M
1 (d) Define Morphological operations Erosion and Dilation.
5 M

2 (a) Discuss colour models for a digital image.
10 M
2 (b) For the given 3 bits per pixel, 4×4 size perform following operations
i) Intensity level slicing with background, r1=3 and r2=5
Bit plane slicing
6 2 3 2
1 5 0 7
4 3 2 1
2 5 7 6
10 M

3 (a) Explain: The first difference makes the chain code invariant to rotation.
10 M
3 (b) Explain Homomorphic filtering with the help of block diagram.
10 M

4 (a) Write 8×8 Hadamard transform matrix and its signal flow graph for fast Hadamard transform. Using this butterfly diagram (Signal flow graph) compute Hadamard transform for x(n)={1, 2, 1, 1, 3, 2, 1, 2}.
10 M
4 (b) Find the DCT of the given Image using matrix multiplication method. \[ f(x, y) = \begin{bmatrix} 2 &4 &4 &2 \\4 &6 &8 &3 \\2 &8 &10 &4 \\3 &8 &6 &2 \end{bmatrix} \]
10 M

5 (a) Discuss the different types of redundancies in images with examples.
10 M
5 (b) Construct Improved Gray Scale (IGS) quantization code for given gray scale data, {100, 110, 124, 130, 200, 210}.
10 M

Write detail notes on (any two).
6 (a) Edge Linking using Hough transform.
10 M
6 (b) Thinning with example.
10 M
6 (c) Differential Pulse Code Modulation (DPCM).
10 M
6 (d) Segmentation techniques: Region growing and split and merge.
5 M



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