M.C.A. (Semester (CBCS) 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 correct alternatives. 10
Which of the following zooming methods yields best results?
Pixel replication Bilinear interpolation
Nearest neighbor interpolation Both b and c
The size of an 8 bit square RGB color image is 75 bytes. How many
rows it contains?
5 10
15 25
Which of the following is not an order statistic filter?
Mean filter Median filter
Midpoint filter Min filter
Which of the following filters may produce ringing effect?
Ideal Gaussian
Butterworth Both b and c
The median of a list of values is 50th of ordered set of values.
Percentile Percentage
Rank Position
The hit-or-miss transform uses operations.
Erosion, complement, subtraction, union
Dilation, complement, subtraction, union
Erosion, complement, subtraction, intersection
Dilation, complement, subtraction, intersection
Average is same as digital
Differentiate Derivation
Addition Integration
Example(s) of similarity approach in image segmentation is/are
Edge based segmentation Boundary based segmentation
Region based segmentation Both a and b
Which of the following statements is correct for covariance matrix?
Asymmetric matrix
Diagonal matrix
Its diagonal elements are zero
Symmetric matrix with all equal diagonal elements
Page 2 of 3
SLR-SM-46
10) Two classes of fruits are classified using their length, width, weight.
The boundary separating them will be a
Line Curve
Edge Plane
Fill in the blanks:- 04
The intensity of a pixel in a 6 bit image is 25. Value after applying
negative transform is
The expression for Butterworth highpass filter is
Thresholding converts a gray scale image into image.
The diameter of boundary of an object is expressed as
Q.2 Write short notes on the following. 08
Digital path and connected component with examples.
Power-law transformation
Answer the following: 06
A pixel has intensity 50, 2 and compute its log and
power-law transformations.
If the threshold is 200, check whether a horizontal line exists in the
following image segment?
65 71 210
170 191 145
101 49 93
Q.3 Answer the following. 14
What are the applications of image processing which use modalities other
than electromagnetic spectrum? Explain them.
Perform histogram stretching to 0-7 intensity range for the below image
information.
Intensity 0 1 2 3 4 5 6 7
No. of pixels 0 200 120 100 80 0 0 0
Q.4 Answer the following. 14
Derive homomorphic filtering.
Perform opening on a right angle triangle with base and height 6 cm using
a circle of 1 cm radius and square of each side 1 cm.
Q.5 Answer the following. 14
What are notch filters? Discuss their design.
Perform logical NOT operation on following 8 bit image segment.
193 31 37 81
213 165 39 251
75 133 9 83
130 45 201 187