MCQOPTIONS
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MCQOPTIONS
This section includes 56 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. |
Restoration can not be done using |
| A. | single projection |
| B. | double projection |
| C. | triple projection |
| D. | octa projection |
| Answer» B. double projection | |
| 2. |
Mean filters reduce noise using |
| A. | sharpening |
| B. | blurring |
| C. | restoration |
| D. | acquisition |
| Answer» C. restoration | |
| 3. |
The approach to restoration is |
| A. | inverse filtering |
| B. | spike filtering |
| C. | black filtering |
| D. | ranking |
| Answer» B. spike filtering | |
| 4. |
Spatial filtering is used in the presence of |
| A. | additive random noise |
| B. | gamma noise |
| C. | black noise |
| D. | exponential noise |
| Answer» B. gamma noise | |
| 5. |
One that is not the type of a mean filter |
| A. | arithmetic mean filter |
| B. | geometric mean filter |
| C. | harmonic mean filter |
| D. | sequence mean filter |
| Answer» E. | |
| 6. |
Degradation can be estimated by |
| A. | 2ways |
| B. | 3ways |
| C. | 4ways |
| D. | 5ways |
| Answer» C. 4ways | |
| 7. |
The absence of receptors is in the retinal area called _____________ |
| A. | Lens |
| B. | Ciliary body |
| C. | Blind spot |
| D. | Fovea |
| Answer» D. Fovea | |
| 8. |
Ratio of number of rods to the number of cones is _______ |
| A. | 1:20 |
| B. | 1:2 |
| C. | 1:1 |
| D. | 1:5 |
| Answer» B. 1:2 | |
| 9. |
Contraharmonic mean filter produces |
| A. | degraded image |
| B. | original image |
| C. | restored image |
| D. | plane |
| Answer» D. plane | |
| 10. |
Constrained least squares filter does not implies best in |
| A. | Rayleigh noise |
| B. | degradation |
| C. | restoration |
| D. | optimum restoration |
| Answer» E. | |
| 11. |
Salt and pepper noise can interchangeably be used with |
| A. | Rayleigh noise |
| B. | gamma noise |
| C. | black noise |
| D. | impulse |
| Answer» E. | |
| 12. |
Gaussian shape function has no |
| A. | ones |
| B. | zeros |
| C. | pixels |
| D. | coordinates |
| Answer» C. pixels | |
| 13. |
Degraded image is given in a |
| A. | frequency domain |
| B. | time domain |
| C. | spatial domain |
| D. | plane |
| Answer» D. plane | |
| 14. |
Salt and pepper noise also referred to the term |
| A. | Rayleigh noise |
| B. | spike noise |
| C. | black noise |
| D. | exponential noise |
| Answer» C. black noise | |
| 15. |
Function having both properties of additivity and homogeneity is called |
| A. | sharpening |
| B. | spike noise |
| C. | restoration |
| D. | superposition |
| Answer» E. | |
| 16. |
FFT stands for |
| A. | fast Fourier transform |
| B. | frequency Fourier transform |
| C. | frequency fast transform |
| D. | fast frequency transform |
| Answer» B. frequency Fourier transform | |
| 17. |
Approach that incorporates both degradation function and statistical noise in restoration is called |
| A. | inverse filtering |
| B. | spike filtering |
| C. | wiener filtering |
| D. | ranking |
| Answer» D. ranking | |
| 18. |
CT stands for |
| A. | computerized tomography |
| B. | computed tomography |
| C. | computerized terminology |
| D. | computed terminology |
| Answer» C. computerized terminology | |
| 19. |
Frequencies in predefined neighborhood are rejected by |
| A. | notch filter |
| B. | bandpass filter |
| C. | highpass filter |
| D. | max filter |
| Answer» B. bandpass filter | |
| 20. |
Principle sources of noise arise during image |
| A. | destruction |
| B. | degradation |
| C. | restoration |
| D. | acquisition |
| Answer» E. | |
| 21. |
Impulse is simulated by |
| A. | black dot |
| B. | gray dot |
| C. | bright dot |
| D. | sharp dot |
| Answer» D. sharp dot | |
| 22. |
Square of standard deviation is called |
| A. | variance |
| B. | noise |
| C. | restoration |
| D. | power |
| Answer» B. noise | |
| 23. |
________ serve to a general, overall picture of the field of view. |
| A. | Cones |
| B. | Rods |
| C. | Retina |
| D. | All of the Mentioned |
| Answer» C. Retina | |
| 24. |
Bandreject filters are used where the noise components are usually |
| A. | rejected |
| B. | unknown |
| C. | known |
| D. | taken |
| Answer» D. taken | |
| 25. |
Order statistics filters are filters whose responses are based on |
| A. | additive noise |
| B. | probability density function |
| C. | pixels |
| D. | ranking |
| Answer» E. | |
| 26. |
The inverse of image convolution is |
| A. | image nonconvolution |
| B. | image inconvolution |
| C. | image deconvolution |
| D. | image byconvolution |
| Answer» D. image byconvolution | |
| 27. |
Periodic noises arise from |
| A. | electrical interference |
| B. | gamma interference |
| C. | beta interference |
| D. | mechanical interference |
| Answer» B. gamma interference | |
| 28. |
One that is not a type of a noise is |
| A. | Rayleigh noise |
| B. | gamma noise |
| C. | black noise |
| D. | exponential noise |
| Answer» D. exponential noise | |
| 29. |
SNR in noise stands for |
| A. | signal to noise ratio |
| B. | serial to noise ratio |
| C. | signal to notch ratio |
| D. | serial to notch ratio |
| Answer» B. serial to noise ratio | |
| 30. |
Filter that replaces the pixel value with the minimum values of intensity levels is |
| A. | max filter |
| B. | geometric mean filter |
| C. | median filter |
| D. | min filter |
| Answer» E. | |
| 31. |
In geometric mean filters when alpha is equal to 0 then it works as |
| A. | notch filter |
| B. | bandpass filter |
| C. | parametric wiener filter |
| D. | inverse filter |
| Answer» D. inverse filter | |
| 32. |
To improve the speed of convergence algorithm used is |
| A. | newton |
| B. | Raphson |
| C. | wiener |
| D. | newton-Raphson |
| Answer» E. | |
| 33. |
Low frequency components are passed by |
| A. | lowpass filter |
| B. | bandpass filter |
| C. | highpass filter |
| D. | max filter |
| Answer» B. bandpass filter | |
| 34. |
Degraded image is produced using degradation process and |
| A. | additive noise |
| B. | destruction |
| C. | pixels |
| D. | coordinates |
| Answer» B. destruction | |
| 35. |
Minimum mean square error filter is also called |
| A. | square error filter |
| B. | most square error filter |
| C. | least square error filter |
| D. | error filter |
| Answer» D. error filter | |
| 36. |
Images usually gets corrupted during |
| A. | transmission |
| B. | degradation |
| C. | restoration |
| D. | acquisition |
| Answer» B. degradation | |
| 37. |
High frequency components are passed by |
| A. | lowpass filter |
| B. | bandpass filter |
| C. | highpass filter |
| D. | max filter |
| Answer» D. max filter | |
| 38. |
The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r, form a square centred at (x,y) is called : |
| A. | Euclidean distance |
| B. | Chessboard distance |
| C. | City-Block distance |
| D. | None of the Mentioned |
| Answer» C. City-Block distance | |
| 39. |
Fourier spectrum of noises are constant and usually called |
| A. | red noise |
| B. | black noise |
| C. | white noise |
| D. | green noise |
| Answer» D. green noise | |
| 40. |
The distance between pixels p and q, the pixels have a distance less than or equal to some value of radius r, form a diamond centred at (x,y) is called : |
| A. | Euclidean distance |
| B. | Chessboard distance |
| C. | City-Block distance |
| D. | None of the Mentioned |
| Answer» D. None of the Mentioned | |
| 41. |
Which of the following is NOT is not a type of Adjacency? |
| A. | 4-Adjacency |
| B. | 8-Adjacency |
| C. | m-Adjacency |
| D. | None of the Mentioned |
| Answer» E. | |
| 42. |
Automatically determined filters provides inferior results as compared to |
| A. | manually determined filters |
| B. | bandpass filters |
| C. | wiener filters |
| D. | error filters |
| Answer» B. bandpass filters | |
| 43. |
The purpose of restoration is to gain |
| A. | degraded image |
| B. | original image |
| C. | pixels |
| D. | coordinates |
| Answer» C. pixels | |
| 44. |
Filter that computes midpoint between min and max value is called |
| A. | max filter |
| B. | midpoint filter |
| C. | median filter |
| D. | min filter |
| Answer» C. median filter | |
| 45. |
Power spectra and noise of undegraded image must be known is a statement of |
| A. | notch filter |
| B. | bandpass filter |
| C. | wiener filter |
| D. | max filter |
| Answer» D. max filter | |
| 46. |
Filter that replaces the pixel value with the maximum values of intensity levels is |
| A. | max filter |
| B. | geometric mean filter |
| C. | median filter |
| D. | min filter |
| Answer» B. geometric mean filter | |
| 47. |
In geometric mean filters when alpha is equal to 1 then it works as |
| A. | notch filter |
| B. | bandpass filter |
| C. | wiener filter |
| D. | inverse filter |
| Answer» E. | |
| 48. |
In wiener filtering it is assumed that noise and image are |
| A. | different |
| B. | homogenous |
| C. | correlated |
| D. | uncorrelated |
| Answer» E. | |
| 49. |
EBCT scanners stands for |
| A. | electrical beam computed tomography |
| B. | electric beam computed tomography |
| C. | electronic beam computed tomography |
| D. | electron beam computed tomography |
| Answer» E. | |
| 50. |
Filter that performs opposite to band rejected filter is called |
| A. | lowpass filter |
| B. | bandpass filter |
| C. | highpass filter |
| D. | max filter |
| Answer» C. highpass filter | |