GURU NANAK EDUCATION TRUST GROUP OF INSTITUTIONDIGITAL IMAGE PROCESSING (TEC-024)

PRE-UNIVERSITY EXAMINATIONSession: 2012-13 / EVEN SEMESTER

B.Tech (ECE) Final YearWrite down your Roll No on the Question paper. M.M. 100Attempt All Questions. Each Questions carry equal Marks. Time: 2.30 Hr

1. Attempt any four questionsa. What are the components of general-purpose image

processing system?b. What are the major areas where image processing can

be used as an application?c. Define the following:

i. Neighbors of a pixelii. Connectivity between pixels

iii. Distance measuresd. How can we convert the colors from RGB to HSI and

HSI to RGB?e. How can we represent digital images?f. What is sampling theorem? How does it prevent

aliasing?

2. Attempt any four questionsa. What is meant by image enhancement by point

processing? Discuss any two point processing techniques with example.

b. Explain the following:i. Median filtering.

ii. Unsharp masking and crispening.c. Explain the following:

i. Magnification and interpolation.ii. Inverse contrast ratio mapping and statistical

scaling.d. Define the cosine transformation and its properties?

e. Define the Hadamard Transformation and its properties.

f. Define the Haar transform and its properties.

3. Attempt any four questionsa. What is meant by spatial feature extraction? Discuss

about histogram features.b. Define the gradient operators with neat block diagram.c. Discuss about Stochastic gradientsd. Define the contour following with neat diagram for

boundary extraction.e. Discuss the Hough transform.f. Define the component labeling for image

segmentation.

4. Attempt any two questionsa. What is meant by image restoration? Explain image

observation models.b. What is the difference between enhancement &

restoration?c. Explain the method of Noise reduction in frequency

domain.

5. Define any two of the followinga. Pixel codingb. Predictive codingc. Inter frame coding

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