Digital Image Processing Questions and Answers
Q1.
What is the equation used to obtain I(Intensity) component of each RGB pixel in RGB color format?
Answer :
I=1/3(R+G+B)
Q2.
What does the total number of pixels in the region defines?
Answer :
Area
Q3.
We cannot use normalized area as one of the region descriptor.
Answer :
False
Q4.
The texture of the region provides measure of which of the following properties?
Answer :
Smoothness, coarseness and regularity
Q5.
Which of the following is the useful descriptor of a boundary, whose value is given by the ratio of length of the major axis to the minor axis?
Answer :
Eccentricity
Q6.
The order of shape number for a closed boundary is:
Answer :
Even
Q7.
Statistical moments is sensitive to rotation.
Answer :
False
Q8.
What does a shift up and right in the curves of isopreference curve simply means? Verify in terms of N (number of pixels) and k (L=2k, L is the gray level) values.
Answer :
Larger values for N and k, implies better picture quality
Q9.
What is the name of the phenomenon that corrupts the sampled image, and how does it happen?
Answer :
Aliasing, if the band-limited functions are undersampled
Q10.
While Zooming, In order to perform gray-level assignment for any point in the overlay, we assign its gray level to the new pixel in the grid its closest pixel in the original image. What’s this method of gray-level assignment called?
Answer :
Nearest neighbor Interpolation
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