SRM University 2007 B.Tech Electronics and Communications Engineering Bank Digital Image Processing - Question Paper

SRM UNIVERSITY
Faculty of Engineering and Technology
School of Electronics and Communication Engineering

ques. Bank
Subject Code : EC455
Subject Name : Digital Image Processing
Class & Sem : IV Year B.Tech(ECE), VII Sem

UNIT-I
PART-A
1. Draw the cross part of the human eye.
2. Explain- photopic or bright-light vision.
3. Explain-scotopic or dim-light vision.
4. What is called blind spot in the eye?
5. The observer is looking at a tree 15m high at a distance of 100m. obtain the size of the retinal image.
6. Define Weber ratio.
7. Explain image formation in the eye.
8. What is brightness adaptation?
9. What is brightness discrimination?
10. What is Mach band pattern?
11. Explain simultaneous contrast.
12. How a digital image is represented?
13. What do you mean by a pixel?
14. What are called 4-neighbors of a pixel?
15. What are diagonal neighbors of a pixel?
16. Define 4-connectivity.
17. Define 8-connectivity.
18. Define m-connectivity.
19. What is called Euclidean distance?
20. What is called D4 distance or city-block distance?
21. What is called D8 distance or chess board distance?
22. Give any 4 arithmetic operators with pixels.
23. Give any 4 logical operators with pixels.
24. What is meant by perspective transformation?
25. What is called camera calibration?.
26. What do you mean by stereo imaging?
27. What is called gray scale?

PART-B
1. Explain in detail the elements of Digital Image Processing systems.
2. Explain in detail the structure of the human eye.
3. Explain image formation in the eye, brightness adaptation and discrimination.
4. Explain any 4 basic relationships ranging from pixels.
5. Using perspective transformation and assuming the world coordinate system is aligned with the camera coordinate system, derive expression for x,y,z.
6. Using perspective transformation and assuming the world coordinate system is aligned with the camera coordinate system, derive expression for X,Y,Z.
7. Explain the basic transformations: translation, scaling, rotation, concatenation and inverse transformation.

UNIT-II
PART-A
1. Define a 2 dimensional bandlimited image.
2. Define Nyquist rate.
3. What is aliasing? discuss it with image spectrum.
4. What are called fold over frequencies?
5. Define sampling theorem.
6. List the practical limitations in sampling and reconstruction.
7. What is Moiré effect?
8. Write a note on display aperture.
9. What is quantization? How it is applied in images?
10. List the properties of the optimum mean square Quantizer.
11. What will be the mean square fault for uniform PDF Optimal Quantizer?
12. What is meant by visual quantization?
13. How to decrease the contouring effect in visual quantization?
14. Draw the block diagram of Contrast quantization.
15. Draw the block diagram of pseudo random noise quantization.

Earning:   Approval pending.