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ECS702
Following PaperlD and RollNo. to be filled in yourAnswerBook
Roll No.
B.Tech.
(SEM. VII) ODD SEMESTERTHEORY
EXAMINATION 2OI2-13
DIGITAL IMAGE PROCESSING
Time
: 3 Hours
Tbtal Marks
:
100
Note :- Attempt all questions.
l.
Attempt any fourofthe following
(a) Explain
:-
(5x4=20)
sampling and quantization. Explain the effects
of
rcducing sampling and quantization.
(b)
What do you mean by image processing
?
Explain the steps
in image processing with the help of block diagram.
(c)
Give various grey level slicing techniques. What is Confiast
Stretching ?
(d)
Classifu image restoration techniques.
a constant speed
Ifa
car is moving at
of 80 km/h and an image is taken, is it
possible to use a wiener or inverse filter to restore the
bluning of image ?
(e)
Suppose that A, B, C are three points Prove that
((A'B)
(f)
o
:
C)'B) o C = (A'B) o C
Explain the thresholding method of segmentation.
ECS702/DLT-44I31
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2.
Attempt any two ofthe following
(a)
:
(10x2=20)
Explain the steps involved in sampling
and digitization
images. How many minutes are required
x
for a
of
5lZ
512
image with 256 grey Ievels at 300 baud
rate for transmission ?
The transmission is accomplished using
packets consisting
of a start bit, a bye (g bits) of information
and a stop bit.
Baud rate meatls number of bits per second.
(b) (i)
Explain the action ofthe foilowing spatiar
mask on an
image.
0
-l
0
(ii)
(c)
3.
-l
0
4
-1
-l
0
Write short note on mean filter.
Describe any one image sharping rnethod
in detail.
Attempt any two ofthe following
:
(10x2:20)
(a) Write a note on Noise Models in image restoration.
Dedcribe WIENER Filter and Inverse Filtering.
(b) Given an image, write down the g chain code and find
Shape Number of it.
,r*rr
,t
*,
,.**
***
***
**J
***
***
,r**
ECS702/DLT-4413r
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**,
(c)
'
'suppose two discrete one dimensional functions are
represented by the sequences
f:ls7
1.,:
11826891
431
[l 2 1].
Compute
4.
f+
h, f@ h,
fo
h, f ' h
Affempt any two of the following
(i)
(ii)
'(b)
:
:
(10x2:20\
Convex HUQ
Logic operations involving binary images.
What do you mean by thinning and thickening of
an image ? Discuss the method for thinning of an
image.
(c)
What do you mean by morphology ? Discuss any one
morpholo gi cal
5.
al
gorithm with suitable example'
Atternpt any two ofthe following
:
(10x2=20)
(a) Write short notes on
(, WatershedSegmentationAlgo
:
(iD
Feature Thresholding in Pixel BasedApproach'
ECSTOZDLT-4413I
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I
(b)
Describe the region based segmentation.
Apply the region
splitting on following image. Assume
the threshoid valud
be <=3.
5
6
4
7
4
5
5
6
7
7
6
J
J
2
6
6
4
4
3
)
5
6
4
5
4
5
4
6
2
J
J
2
J
0
7
5
3
2
I
0
I
0
)
2
6
5
0
I
I
J
0
4
4
2
1
0
2
J
5
4
0
(c)
J
Describe any one depth recover
algorithm in detail.
ECS702/DLT-a4t3l
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