M.Sc. (Semester II) (CBCS) Examination Nov/Dec-2018
Geoinformatics
DIGITAL IMAGE PROCESSING
Time: 2½ Hours Max. Marks: 70
Instructions: All questions carry equal marks.
Q. 1 is compulsory.
Answer any two questions from Q.2, 3 4.
Answer any two questions from Q.5, 6 7.
Answer any five questions.
Q.1 Select the answer among the following:- 14
Spatial filtering method uses
Low pass filter High pass filter
Band pass filter Spatial filter
Gradient magnitude images are more useful in
Point detection Line detection
Area detection Edge detection
Digitalizing amplitude values is called
Radiance Illuminance
Sampling Quantization
Image can be sharpened using
Low pass filter Contouring
Erosion High pass filter
DIP stand for
Digital image processing Digital information processing
Digital induction process None of these
What is digital image?
When y and the amplitude values of are all finite, discrete quantities,
we call the image a digital image.
When y and the amplitude values of are all infinite, discrete quantities,
we call the image a digital image.
a and b
None of these
An example of a continuous function of two variables is
Intensity function Contrast stretching
Gaussian function None of above
Dark characteristics in an image are better solved using
Laplacian Transform Gaussian Transform
Histogram Specification Power-law Transformation
A fuzzy set is if and only if membership function is identically
zero in Z.
Empty Subset O
Complement None of these
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SLR-VM-361
10) How many numbers of steps are involved in image processing?
10 9
11 12
11) Which one of the following software is used for digital image analysis?
ERDAS SWAT
HEC-HMS None of these
12) Radiometric differentiation detect
Brightness Edge
Darkness None of these
13) For the success of supervise classification is needed.
Good visual interpretation Knowledge of local area
Only a a and b
14) What is the independent variable of fuzzy output?
Maturity Membership
Generic element None of the mentioned
Q.2 With neat block diagram explain the digital image processing system. 14
Q.3 What do you mean by radiometric correction? Describe with neat sketch how
the radiometric correction of satellite image is carried out.
14
Q.4 Define training sites. Discuss various methods of collecting it. Discuss in detail
error matrix and accuracy assessment.
14
Q.5 Write short note 14
Sources of geometric errors
Contrast stretching
Q.6 Write a brief with suitable illustration on the following:- 14
Need of image enhancement
Define histogram. What is its significance in digital image processing?
Q.7 Write an account on the following:- 14
Noise removal models
Machine approach for hybrid classification