Digital Image Processing Questions and Answers
Q1.
Which of the following is the valid response when we apply a first derivative?
Answer :
Zero in flat segments
Q2.
First order derivative can enhance the fine detail in the image compared to that of second order derivative.
Answer :
False
Q3.
Which of the facts(s) is/are true for the first order derivative of a digital function?
Answer :
Must be nonzero along the gray-level ramps
Q4.
What kind of relation can be obtained between first order derivative and second order derivative of an image on the response obtained by encountering an isolated noise point in the image?
Answer :
Second order derivative has a stronger response than a first order
Q5.
What does Image Differentiation de-emphasize?
Answer :
Areas with slowly varying intensities
Q6.
Where do you find frequent use of Gradient?
Answer :
Industrial inspection
Q7.
Dark characteristics in an image are better solved using ______
Answer :
Power-law Transformation
Q8.
An alternate approach to median filtering is ________
Answer :
Use a mask
Q9.
The standard deviation controls _______ of the bell (2-D Gaussian function of bell shape).
Answer :
Tightness
Q10.
Which of the following involves Correlation?
Answer :
Matching
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