Digital Image Processing Questions and Answers
Q1.
What is Histogram Equalisation also called as?
Answer :
Histogram linearisation
Q2.
The type of Histogram Processing in which pixels are modified based on the intensity distribution of the image is called _______.
Answer :
Global
Q3.
What is the undesirable side effects of Averaging filters?
Answer :
Blurred edges
Q4.
Best example for a Order-statistic filter is _______
Answer :
Median filter
Q5.
Which of the following filter(s) results in a value as average of pixels in the neighborhood of filter mask.
Answer :
1. Smoothing linear spatial filter
2. Averaging filter
3. Lowpass filter
Q6.
What is the relation between blurring effect with change in filter size?
Answer :
Blurring increases with increase of the size of filter size
Q7.
While performing the median filtering, suppose a 3*3 neighborhood has value (10, 20, 20, 20, 15, 20, 20, 25, 100), then what is the median value to be given to the pixel under filter?
Answer :
20
Q8.
The response for linear spatial filtering is given by the relationship ______
Answer :
Sum of filter coefficient’s product and corresponding image pixel under filter mask
Q9.
Which of the following method is/are used for padding the image?
Answer :
1. Adding rows and column of 0 or other constant gray level
2. Simply replicating the rows or columns
Q10.
To set the average value of an image zero, which of the following term would be set 0 in the frequency domain and the inverse transformation is done, where F(u, v) is Fourier transformed function of f(x, y)?
Answer :
F(0, 0)
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