Download AKTU B-Tech 7th Sem 2015-2016 ECS 702 Digital Image Processing Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2015-2016 ECS 702 Digital Image Processing Question Paper

Printed Pages: 5 744 ECS702
(Following Paper ID and Roll No. to be ?lled in your
Answer Book)
Roll No.
B. Tech.
(SEM. VII)THEORY EXAMINATION,.2015-16
DIGITAL IMAGE PROCESSING
[Time:3 hours] [MaximumMarks:100]
Section - A
1. Attempt all parts. All parts carry equal marks. Write
answer of each part in short : (2x10=20)
(a) What do you understand by Weber Ratio ? What
does a low value for Weber Ratio indicate ?
(b) Consider the following two 8-bit images;
Each 0fthese images has dimensions 20x20. Show
the histograms of these images. Please note that
the borders of the images shown in black are just
to highlight the boundaries. The border is not a part
of the image.
15800 (1) P.T.O.

(o)
(d)
(e)
(f)
(g)
(h)
(j)
l 5800
What would happen to the dynamic range of an
image if ail the slopes in the contrast stretched
algorithm (1, m, n) are less than one.
Write down the ?lter mask for Sahel and Prcwitt
?iters.
What are the different approaches for
segmentation?
In which situation we use region merging and
region spliting ?
Derive, why we multiply with (?1)"ny in case of
frequency domain ?ltering ?
What steps are related with high level processing
in digital image processing ?
Draw the graph for Power law (Gamma)
transformation (for gamma > 1).
What are the issues involved for stereo imaging
problem ?
(2)
Sec?on?B
1%me ?ve questions fmm this section :(Sx10=50)
9
1...
What do you understand by digitai image processing ?
Explain the components ofan image processing system.
Given the imagcA:
And structuring element B :
Compute (i) AdilatedbyB
(ii) A?emdedbyB
1 5800 (3) ETD.

Consider the image segment :
3 ? 0
0 V 2
2 4
1
1 4
? Let V = ?{2, 3, 4}. Compute the lengths Ofthe shortest-B
and path between p and q. If a particular path does not
exist between these two points, explain why ? What is
the signi?cance of ?m? path ?
Derive the frequency domain transformation function
H(u, v) for the following spatial domain ?lter h(x, y).
0 -l 0
-1 8 ?1
0 -1 0
How homomorphic ?ltering is implemented ?
Draw the diagram for image resoration / degradation
process. Explain the linear, position invariant property
of degradation ?mction.
Explain periodic noise reduction using band reject ?lter.
Explain convex hull with the help of an example.
State and explain various approaches used for edge
detection.
15800 (4)
Section - C
Note: Attempt any two questions from this section : (15x2=30)
10. What are the linear and non-linear smoothing ?lters in
spatial domain ? Compute the new pixel values after
applying the 3*3 box ?lter on the following 5* 5 matrix
of an 8-bit iamge.
139 128 237 126 129
145 129 123 89 132 1 1 1
146 122 128 87 135 1/9* 1 1 1
141 125 134 131 139 l 1 1
112 127 138 133 142
l 1. Write the procedures for boundary extraction and region
?lling. Mention atleast one real life application of both.
What is the result ofapplying successive opening on the
same set with the same structuring element ?
12. Write short notes on :
(a) Chain code
(b) Skeletons / MAT
(c) Hough transform for boundary shape detection.
.__.x._
.
15800 (5)