Digital Image Processing Questions and Answers
Q1.
What is/are the approach(s) of the gray-level slicing?
Answer :
1. To give all gray level of a specific range high value and a low value to all other gray levels
2. To brighten the pixels gray-value of interest and preserve the background
Q2.
In general, which of the following assures of no ringing in the output?
Answer :
Gaussian Lowpass Filter
Q3.
The function of filters in Image sharpening in frequency domain is to perform reverse operation of which of the following Lowpass filter?
Answer :
Ideal Lowpass filter
Q4.
How is image formation in the eye different from that in a photographic camera
Answer :
Variable focal length
Q5.
______ serve to a general, overall picture of the field of view.
Answer :
Rods
Q6.
If R is a subset of pixels, we call R a _______ of the image if R is a connected set.
Answer :
Region
Q7.
The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r, form a diamond centred at (x,y) is called :
Answer :
City-Block distance
Q8.
What is the quantity that is used to measure the total amount of energy flowing from the light source?
Answer :
Radiance
Q9.
What is the value obtained by the sum of the three trichromatic coefficients?
Answer :
1
Q10.
What is the equation used to obtain S component of each RGB pixel in RGB color format?
Answer :
S=1-3/(R+G+B) [min(R,G,B)].
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