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Which of the following function satisfy linearity property?
a. x 4t+5
b. x(z) = = dt(z) dz
C. x = 2t3 +3
d. None of the above
Which of the following is (are) true regarding Gaussian Low Pass Filter?
Statement 1: Gaussian Low Pass Filter does not produce ringing effect.
Statement 2: Gaussian Low Pass Filter completely stopped all the frequency above the cut off frequency.
a. Statement 1
b. Statement 2
c. Statement 1 and 2
d. None of the Statement
Which of the following corresponds to Gaussian high pass filter?
a. H(u,v) = (1 if D(u,v) ≤ Do 0 if D(u,v)> Do
b. H(u,v) = e -D2(u,v)/2D2
C. H(u,v) =1-e-D2(u,v)/2D2
d. None of these
In case of inverse filtering, if the cut off frequency is significantly high then which of the following is true?
a. Restored image becomes blurry
b. Restored image close to original image
c. Noise in restored image dominates
d. None of these
Which of the following true regarding Butterworth Low Pass Filter.
Statement 1: If we increase the rank than it behaves more like an ideal low filter.
Statement 2: If we increase the rank than output exhibits ringing artifacts.
a. Statement 1
b. Statement 2
c. Both statement 1 and 2
d. None of the Statement is true.
Which of the following filter does not produce ringing effect?
a. Ideal low pass filter
b. Gaussian Low Pass Filter
c. Low Pass Butterworth Filter of very high order
d. All of the above
Which of the following fact is true with respect to a low pass filter?
a. The smaller the cut off frequency of a filter results in increased blurring
b. The smaller the cut off frequency of a filter results in increased blurring
c. Blurring is independent of cutoff frequency.
d. Both a and b
In which of the following filter, the intensity at a particular point in the image, is a product of two terms, one is the illumination term, other one is the reflectance term is assumed?
a. Homomorphic filter
b. Laplacian filter
c. High Boost filter
d. Gaussian filter
In which of the following method estimation of degradation function is required?
a. Image restoration
b. Image enhancement
c. Both a and b
d. None of the above
The following equation corresponds to a filter. H(u, v) = 1 Do D(u.v) 1+
Where, n is a positive integer, D, is cut-off frequency, which of the following is true?
a. There is a ringing effect for higher value of n
b. There is no ringing effect for higher value of n
c. Ringing effect in independent of n
d. None of these