GTU Fundamentals of Image Processing - December 2014 Exam Question Paper

GTU Electronics and Communication Engineering (Semester 8)
Fundamentals of Image Processing
December 2014

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) (i) How do you convert analog image to digital?

3 M

1 (a) (ii) "Adding image with itself makes image brighter" Justify.

2 M

1 (a) (iii) List the types of noise and their cause, which can corrupt an image.

2 M

1 (b) List the different areas of image processing applications with examples.

7 M

2 (a) Explain Translation and Scaling operations used in image processing with suitable example and application.

7 M

2 (b) With reference to image processing, briefly explain following terms:
(i) 4-connected path (ii) Dynamic range (iii) False contouring

7 M

2 (c) With reference to image processing, briefly explain following terms:
(i) Match band (ii) Brightness adaption (iii) Contrast

7 M

3 (a) "Multiplying the image with -1^(x+y) in spatial domain leads to shift of 2-D Fourier Transform to the centre." Justify the statement with suitable example.

7 M

3 (b) Write MATLAB code to flip gray image horizontally.

7 M

3 (c) Enlist the methods to increase the dynamic range of an image. Explain any one method in detail.

7 M

3 (d) Write MATLAB code to perform bit-plane slicing of gray image.

7 M

4 (a) What is limitation of median filter? How adaptive median filter enhances working of median filter? Explain in detail.

7 M

4 (b) Explain in detail the RGB color model. What is the Hex number for brightest possible red?

7 M

4 (c) Explain in brief: (i) Contra-harmonic mean filter (ii) Alpha-trimmed mean Filter.

7 M

4 (d) Write short note on 2-D wavelet transform.

7 M

5 (a) Prove that opening and closing are duals of each other.

7 M

5 (b) Write short note on LZW coding

7 M

5 (c) List various morphological operations used in image processing with their specific applications.

7 M

5 (d) Show that the Laplacian operator is invariant to rotation.

7 M

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