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GURU NANAK EDUCATION TRUST GROUP OF INSTITUTION
DIGITAL IMAGE PROCESSING (TEC-024)
PRE-UNIVERSITY EXAMINATION
Session: 2012-13 / EVEN SEMESTER
B.Tech (ECE) Final Year
Write down your Roll No on the Question paper. M.M. 100
Attempt All Questions. Each Questions carry equal Marks. Time: 2.30 Hr
1. Attempt any four questions
a. 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 pixel
ii. Connectivity between pixels
iii. Distance measures
d. 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 questions
a. 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 questions
a. What is meant by spatial feature extraction? Discuss
about histogram features.
b. Define the gradient operators with neat block diagram.
c. Discuss about Stochastic gradients
d. 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 questions
a. 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 following
a. Pixel coding
b. Predictive coding
c. Inter frame coding
Roll No. +