Digital Image Processing Questions and Answers
Q1.
Which of the following filter(s) attenuates high frequency while passing low frequencies of an image?
Answer :
Lowpass filter
Q2.
A frequency domain filter of the corresponding filter in spatial domain can be obtained by applying which of the following operation(s) on filter in spatial domain?
Answer :
Fourier transform
Q3.
Which of the following lowpass filters is/are covers the range of very sharp filter function?
Answer :
Ideal lowpass filters
Q4.
In an ideal lowpass filter case, what is the relation between the filter radius and the blurring effect caused because of the filter?
Answer :
Filter size is inversely proportional to blurring caused because of filter
Q5.
In frequency domain terminology, which of the following is defined as “obtaining a highpass filtered image by subtracting from the given image a lowpass filtered version of itself”?
Answer :
Unsharp masking
Q6.
Validate the statement “Because of High frequency emphasis the gray-level tonality due to low frequency components is not lost”.
Answer :
True
Q7.
Which of the following image component varies abruptly particularly at the junction of dissimilar objects?
Answer :
Reflectance component
Q8.
The general form of log transformations is _______
Answer :
s = c.log(1 + r)
Q9.
Highlighting the contribution made to total image by specific bits instead of highlighting intensity-level changes is called _______
Answer :
Bit-plane slicing
Q10.
If Z is a set of elements with a generic element z, i.e. Z = {z}, then this set is called _______
Answer :
Universe of discourse
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