M.C.A. (Science) (Semester-V) (CGPA) Examination, 2017
Digital Image Processing Real Time System
Day Date: Tuesday, 25-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions
Q.1 and Q.2 are compulsory
Attempt any Three Questions from Q.3 to Q.7
Figures to the right indicate full marks.
Q.1 Choose correct alternatives: 10
The early Bartlane systems introduced in 1920 was capable
of coding images in ……. distinct levels of gray.
3 5 E
9 15
The formation of an image depends on the amount of
rays,…..when source of energy is x-ray.
Reflected Transmitted E
Dispersed Both and
The storage space required for storing an image of size 64 x
64 with 256 gray levels is …… KB.
64 4
8 16
In the power-law transform the process used to correct the
power-law response phenomena is called……..correction.
Alpha Beta E
Gamma Delta
The terms and are….., ….. and ……
respectively.
Fourier spectrum, Phase angle, Power spectrum
Phase angle, Fourier spectrum, Power spectrum
Phase angle, Power spectrum, Fourier spectrum
Power spectrum, Fourier spectrum, phase angle
Which of the probability density function is useful when noisy
image has skewed histogram?
Impulse noise Periodic noise E
Uniform noise Rayleigh noise
When an object A is eroded with a square SE and then
Page 2 of 3
subtracted from A then the area within the boundary of
resulting image will be…..
Remain same
Increased depending on SE
Decreased depending on SE
Decreases but does not depend on SE
A mask with 1 in upper and lower rows and 2 in middle row
is used to fine……..
Horizontal lines Vertical lines E
Diagonal lines Isolated points
Euler number of a shape is 4. It has 2 holes, 6 vertices and 4
faces. How many edges are there?
1 2 E
3 4
10) In case of two class problem with two features which of the
following statement is true?
The mean vector points are at equidistance from bisecting
line
The line joining mean vectors is parallel to line bisecting to
classes
The line joining mean vectors is perpendicular to line
bisecting to classes
One mean vector is always near to bisecting line than the
other
Fill in the blanks or true false: 04
Euclidean distance between pixels at coordinate and
is……
In the …………. Filtering approach, filtering is applied
separately on illumination and reflectance components.
The man of Rayleigh density function is………
Any one property used to measure the texture is…….
Q2 Write short notes on the following: 08
Different distance measures among pixels and examples.
Basic steps in frequency domain filtering.
Answer the following: 06
Explain Bit plane slicing
What are properties of texture?
Q3 Answer the following 7+7
Discuss storage representation of digital image.
Apply global thresholding algorithm on following image to obtain
binary image by selecting initial threshold using mid-point filter.
Iteration of algorithm must stop when difference of threshold is
less than 0.1
1 5 9
0 7 15
4 2 6
Page 3 of 3
Q4 Answer the following: 7+7
Briefly explain basic gray level transforms.
Perform erosion of a triangle with each side's 6cm using square
having 2 cm each side.
Q5 Answer the following: 7+7
Derive 2D Fourier transform and its inverse.
Fill following region using cross structuring element.
Q6 Answer the following: 7+7
What are different order statistics filters? Briefly discuss them.
Find mean and covariance matrix for the vectors x1
x3 0)T and x4 1)T
Q7 Answer the following: 7+7
Discuss object recognition based on structural method with
example.
Apply min filter for the following matrix using 3 x 3 filters. Only
consider values within boundary for computation.
180 19 72
41 53 80
210 199 65