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This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Image Processing knowledge and support exam preparation. Choose a topic below to get started.
1. |
Which of the following filtering is done in frequency domain in correspondence to lowpass filtering in spatial domain? |
A. | Gaussian filtering |
B. | Unsharp mask filtering |
C. | High-boost filtering |
D. | None of the mentioned |
Answer» B. Unsharp mask filtering | |
2. |
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? |
A. | Fourier transform |
B. | Inverse Fourier transform |
C. | None of the mentioned |
D. | All of the mentioned |
Answer» B. Inverse Fourier transform | |
3. |
A spatial domain filter of the corresponding filter in frequency domain can be obtained by applying which of the following operation(s) on filter in frequency domain? |
A. | Fourier transform |
B. | Inverse Fourier transform |
C. | None of the mentioned |
D. | All of the mentioned |
Answer» C. None of the mentioned | |
4. |
The feature(s) of a highpass filtered image is/are ___________ |
A. | Have less gray-level variation in smooth areas |
B. | Emphasized transitional gray-level details |
C. | An overall sharper image |
D. | All of the mentioned |
Answer» E. | |
5. |
THE_FEATURE(S)_OF_A_HIGHPASS_FILTERED_IMAGE_IS/ARE____________?$ |
A. | Have less gray-level variation in smooth areas |
B. | Emphasized transitional gray-level details |
C. | An overall sharper image |
D. | All of the mentioned |
Answer» E. | |
6. |
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?$ |
A. | Fourier transform |
B. | Inverse Fourier transform |
C. | None of the mentioned |
D. | All of the mentioned |
Answer» B. Inverse Fourier transform | |
7. |
A_spatial_domain_filter_of_the_corresponding_filter_in_frequency_domain_can_be_obtained_by_applying_which_of_the_following_operation(s)_on_filter_in_frequency_domain?$ |
A. | Fourier transform |
B. | Inverse Fourier transform |
C. | None of the mentioned |
D. | All of the mentioned |
Answer» C. None of the mentioned | |
8. |
Using the feature of reciprocal relationship of filter in spatial domain and corresponding filter in frequency domain, which of the following fact is true? |
A. | The narrower the frequency domain filter results in increased blurring |
B. | The wider the frequency domain filter results in increased blurring |
C. | The narrower the frequency domain filter results in decreased blurring |
D. | None of the mentioned |
Answer» B. The wider the frequency domain filter results in increased blurring | |
9. |
Which_of_the_following_filtering_is_done_in_frequency_domain_in_correspondence_to_lowpass_filtering_in_spatial_domain? |
A. | Gaussian filtering |
B. | Unsharp mask filtering |
C. | High-boost filtering |
D. | None of the mentioned |
Answer» B. Unsharp mask filtering | |
10. |
Which of the following filter have a less sharp detail than the original image because of attenuation of high frequencies? |
A. | Highpass filter |
B. | Lowpass filter |
C. | Zero-phase-shift filter |
D. | None of the mentioned |
Answer» C. Zero-phase-shift filter | |
11. |
Which of the following filter(s) attenuates low frequency while passing high frequencies of an image? |
A. | Unsharp mask filter |
B. | Highpass filter |
C. | Zero-phase-shift filter |
D. | All of the mentioned |
Answer» C. Zero-phase-shift filter | |
12. |
Which of the following filter(s) attenuates high frequency while passing low frequencies of an image? |
A. | Unsharp mask filter |
B. | Lowpass filter |
C. | Zero-phase-shift filter |
D. | All of the mentioned |
Answer» C. Zero-phase-shift filter | |
13. |
What is the name of the filter that is used to turn the average value of a processed image zero? |
A. | Unsharp mask filter |
B. | Notch filter |
C. | Zero-phase-shift-filter |
D. | None of the mentioned |
Answer» C. Zero-phase-shift-filter | |
14. |
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)? |
A. | F(0, 0) |
B. | F(0, 1) |
C. | F(1, 0) |
D. | None of the mentioned |
Answer» B. F(0, 1) | |
15. |
What is the name of the filter that multiplies two functions F(u, v) and H(u, v), where F has complex components too since is Fourier transformed function of f(x, y), in an order that each component of H multiplies both real and complex part of corresponding component in F? |
A. | Unsharp mask filter |
B. | High-boost filter |
C. | Zero-phase-shift-filter |
D. | None of the mentioned |
Answer» D. None of the mentioned | |
16. |
Which of the following fact(s) is/are true for the relationship between high frequency component of Fourier transform and the rate of change of gray levels? |
A. | Moving away from the origin of transform the high frequency corresponds to smooth gray level variation |
B. | Moving away from the origin of transform the higher frequencies corresponds to abrupt change in gray level |
C. | All of the mentioned |
D. | None of the mentioned |
Answer» C. All of the mentioned | |
17. |
Which of the following fact(s) is/are true for the relationship between low frequency component of Fourier transform and the rate of change of gray levels? |
A. | Moving away from the origin of transform the low frequency corresponds to smooth gray level variation |
B. | Moving away from the origin of transform the low frequencies corresponds to abrupt change in gray level |
C. | All of the mentioned |
D. | None of the mentioned |
Answer» D. None of the mentioned | |