M.C.A. (Semester (CGPA) Examination Oct/Nov-2017
Science
DIGITAL IMAGE PROCESSING
Day Date: Thursday, 23-11-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Question No.1 and 2 are compulsory.
Attempt any 3 questions from Q.NO. 3 to Q. No. 7
Figures to the right indicate full marks.
Q.1 Choose the most correct alternatives: 10
Electron microscopes can achieve magnification of more than
1,000 X 5,000 X
10,000 X 1,00,000 X
Pixels P and Q are
0 1 1P
0 1 0
1Q 0 0
4 connected 8 connected
connected 8 and connected
The storage space required for storing an image of size 10 x 10 with 16
gray levels is bits.
50 100
400 1600
In contrast stretching the location of and are at
10) and 8). Then the contrast stretching converts to
Identity transform Thresholding function
Negative transform Violation of condition

is the expression for
Gaussian Low pass filter Gaussian High pass filter
Butterworth Low pass filter Butterworth High pass filter
A filter returns average of maximum and minimum value
from the list.
Midpoint Mean
Median Min and Max
To thin a thicker object to get one pixel thickness
Only one SE has to be applied once
Only one SE has to be applied multiple times
A set of SE has to be applied once
A set of SE has to be applied multiple times
The response of second order derivative at ramps in downward direction
is
Zero Constant, but positive
Constant, but negative Not constant
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A region contains 12 edges, 5 connected components, 8 vertices and 6
faces. How many Holes are there?
1 3
5 7
10) The minimum distance classifier gives best classification results when
class values are distributed in shape in 2D pattern space
Spherical Oval
Circular Linear
State True or False: 04
D8 distance between pixels at coordinates and is
In the expression ,∗ is known as

The Gaussian noise PDF is expressed as
The Miss transform is expressed as
Q.2 Write short notes on the following: 08
Linear and non liner operations
Outer boundary of object with example.
Answer the following: 06
How to get Normalized histogram
Give Example to demonstrate one dimensional signal and its Fourier
transform.
Q.3 Answer the following: 14
What are different electromagnetic spectrums used for digital image
processing applications? Explain any two.
Apply global thresholding algorithm on following image to obtain binary image
by selecting initial threshold using mid-point filter. Iteration of algorithm must
when different of threshold is less than 0.1.
9 4 2
1 3 0
15 5 6
Q.4 Answer the following: 14
Discuss formulation of filters for image enhancement using first derivatives or
gradients.
Perform opening of a rectangle with width 8 cm height 6 cm using a circle
having radius 1 cm.
Q.5 Answer the following: 14
Derives Homomorphic filtering function.
Fill following region using cross structuring element.
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Q.6 Answer the following: 14
Describe the algorithm for adaptive local noise reduction filter.
Find mean and covariance matrix for the vectors 1
0 and
Q.7 Answer the following: 14
Discuss region splitting and merging algorithm.
Compute median matrix for the following matrix using 3 × 3 filter. Only
consider values within boundary for computation.
142 212 89
35 70 166
90 123 120