Digital Image Processing Questions and Answers
Q1.
Which of the following filter have a less sharp detail than the original image because of attenuation of high frequencies?
Answer :
Lowpass filter
Q2.
Using the feature of reciprocal relationship of filter in spatial domain and corresponding filter in frequency domain, which of the following fact is true?
Answer :
The narrower the frequency domain filter results in increased blurring
Q3.
Butterworth lowpass filter has a parameter, filter order, determining its functionality as very sharp or very smooth filter function or an intermediate filter function. If the parameter value is very high, the filter approaches to which of the following filter(s)?
Answer :
Ideal lowpass filter
Q4.
Using the feature of reciprocal relationship of filter in spatial domain and corresponding filter in frequency domain along with convolution, which of the following fact is true?
Answer :
The narrower the frequency domain filter more severe is the ringing
Q5.
The frequency domain Laplacian is closer to which of the following mask?
Answer :
Mask that excludes the diagonal neighbors
Q6.
In Homomorphic filtering which of the following operations is used to convert input image to discrete Fourier transformed function?
Answer :
Logarithmic operation
Q7.
The illumination component of an image is characterized by a slow spatial variation. The characteristic lead to associate illumination with _______
Answer :
The low frequency of Fourier transform of logarithm of the image
Q8.
What is Gamma Correction?
Answer :
A Power-law response phenomenon
Q9.
Piecewise Linear Transformation function involves which of the following?
Answer :
1. Bit-plane slicing
2. Intensity level slicing
3. Contrast stretching
Q10.
A fuzzy set is ______ if and only if membership function is identically zero in Z.
Answer :
Empty
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