1. Smoothing in the frequency domain is achieved by attenuating which of the following component in the transformation of a given image?
A. Attenuating a range of high-frequency components
B. Attenuating a range of low-frequency components
C. All of the mentioned
D. None of the mentioned
2. Which of the following is/are considered as type(s) of lowpass filters?
A. Ideal
B. Butterworth
C. Gaussian
D. All of the mentioned
3. Which of the following lowpass filters is/cover the range of very sharp filter functions?
A. Ideal lowpass filters
B. Butterworth lowpass filter
C. Gaussian lowpass filter
D. All of the mentioned
4. Which of the following lowpass filters is/cover the range of very smooth filter functions?
A. Ideal lowpass filters
B. Butterworth lowpass filter
C. Gaussian lowpass filter
D. All of the mentioned
5. Butterworth lowpass filter has a parameter, filter order, determining its functionality as a very sharp or very smooth filter function or an intermediate filter function. If the parameter value is very high, the filter approaches which of the following filter(s)?
A. Ideal lowpass filter
B. Gaussian lowpass filter
C. All of the mentioned
D. None of the mentioned
6. Butterworth lowpass filter has a parameter, filter order, determining its functionality as a very sharp or very smooth filter function or an intermediate filter function. If the parameter value is of a lower order, the filter approaches which of the following filter(s)?
A. Ideal lowpass filter
B. Gaussian lowpass filter
C. All of the mentioned
D. None of the mentioned
7. In a filter, all the frequencies inside a circle of radius D0 are not attenuated while all frequencies outside the circle are completely attenuated. The D0 is the specified non-negative distance from the origin of the Fourier transform. Which of the following filter(s) characterizes the same?
A. Ideal filter
B. Butterworth filter
C. Gaussian filter
D. All of the mentioned
8. In an ideal lowpass filter case, what is the relation between the filter radius and the blurring effect caused because of the filter?
A. Filter size is directly proportional to blurring caused because of filter
B. Filter size is inversely proportional to blurring caused because of filter
C. There is no relation between filter size and blurring caused because of it
D. None of the mentioned
9. The characteristics of the lowpass filter h(x, y) is/are_________
A. Has a dominant component at origin
B. Has concentric, circular components about the center component
C. All of the mentioned
D. None of the mentioned
10. What is the relation between the components of the ideal lowpass filter and the image enhancement?
A. The concentric component is primarily responsible for blurring
B. The center component is primarily for the ringing characteristic of the ideal filter
C. All of the mentioned
D. None of the mentioned