1. What would be the bandwidth requirement if we convert an analog video signal into a digital one?
Answer
Correct Answer:
Larger bandwidth will be required for the digital signal
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2. By which of the following types of light is an object scanned in the scan-in method?
Answer
Correct Answer:
Thin-collimated light
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3. Which of the following statement is true?
Answer
Correct Answer:
A band limited image cannot be space limited
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4. Which of the following are the perceptual attributes of color?
Answer
Correct Answer:
brightness, hue and saturation.
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5. Which of the following is not a model of image representation?
Answer
Correct Answer:
Memory model
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6. Edge detection in image analysis is used to_______.
Answer
Correct Answer:
identify the object
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7. Which of the following is a color coordinating system used for TV. Receivers?
Answer
Correct Answer:
All of the above
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8. Which part of the human eye acts as an aperture?
Answer
Correct Answer:
Pupil
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9. In image enhancement, which of the following function is performed on the image?
Answer
Correct Answer:
Certain image features are accentuated for subsequent analysis
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10. Which of the following is not a geometric feature of an image?
Answer
Correct Answer:
Centre of mass
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11. Which type of scanning is done by the Charge Coupled Devices (CCD)camera?
Answer
Correct Answer:
Self scanning
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12. Which of the following noises is produced when monochromatic radiation is scattered from a surface and when roughness is of the order of a wavelength?
Answer
Correct Answer:
Speckle noise
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13. Which of the following statements is true of quantizer mapping?
Answer
Correct Answer:
For a given quantizer output, the input value cannot be determined uniquely.
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14. Which of the following is a method to reduce speckle noise?
Answer
Correct Answer:
Homomorphic filtering
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15. Which of the following techniques belongs to inter-frame coding?
Answer
Correct Answer:
All of the above
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16. Which of the following is a type of digital voltmeters?
Answer
Correct Answer:
All of the above
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17. Which of the following is not a method of predictive coding?
Answer
Correct Answer:
Zonal coding
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18. About which of the following domains does image transform during image analysis provide information?
Answer
Correct Answer:
Frequency domain
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19. Which of the following is an image analysis technique?
Answer
Correct Answer:
All of the above
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20. Of which of the following types is the general response of image detectors and recorders?
Answer
Correct Answer:
Non-linear
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21. Which of the following filters can effectively remove the aliasing effect?
Answer
Correct Answer:
Low pass filter
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22. Which of the following steps follows sampling in image digitization?
Answer
Correct Answer:
Quantization
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23. Which of the following methods is used to analyse the structure of patterns in image analysis?
Answer
Correct Answer:
All of the above
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24. The phenomenon in which overlapping of frequency spectrum takes place in sampling is called _______.
Answer
Correct Answer:
Aliasing
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25. Which of the following is not an image filtering method?
Answer
Correct Answer:
Bosch Method
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26. Which of the following techniques is used in analog to digital (ADc)conversion?
Answer
Correct Answer:
All of the above
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27. Which of the following is an image segmentation technique?
Answer
Correct Answer:
All of the above
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28. Which of the following is a moment based feature of an image?
Answer
Correct Answer:
All of the above
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29. Two objects with different surroundings can have identical _______ but different ________.
Answer
Correct Answer:
luminance, brightness
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30. Which of the following techniques does Kalman filtering employs?
Answer
Correct Answer:
Recursive filtering
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31. Which type of vision is provided by the rods in the human eye?
Answer
Correct Answer:
Scotopic vision
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32. If two sinusoidal voltage signals, between 0 and 90 degree out of phase and of equal amplitude and equal frequencies: in a CRO are applied to the horizontal and vertical deflection plates, what shape will appear on the screen?
Answer
Correct Answer:
An ellipse
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33. In the intermediate region of illumination,both rods and cones are active and provide _____.
Answer
Correct Answer:
mesopic vision
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34. Which of the following expressions can define the Q -factor of a coil?
Answer
Correct Answer:
L/R
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35. Which type of target is there in the vidicon tube?
Answer
Correct Answer:
Photoconductive
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36. Contrast stretching is an_______.
Answer
Correct Answer:
image enhancement technique
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37. To which of the following types does Weiner filtering belong?
Answer
Correct Answer:
Linear filters
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38. Which of the following can be termed a two- tone image?
Answer
Correct Answer:
All of the above
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39. Which of the following is an advantage of the vacuum tube voltmeter over the transistorized voltmeter (TVM)?
Answer
Correct Answer:
The VTVM has high input impedance
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40. Which of the following is an image restoration model?
Answer
Correct Answer:
All of the above
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41. In the structural patterns of the surfaces of which object is texture observed?
Answer
Correct Answer:
All of the above
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42. Which of the following effects shows that brightness is not a monotonic function of luminance?
Answer
Correct Answer:
Mach band effect
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43. Which of the following filters is used for image restoration?
Answer
Correct Answer:
Weiner filter
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44. Under which of the following conditions is the phenomenon called contouring used?
Answer
Correct Answer:
If the number of quantization levels is less than that required in grey scale quantization.
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45. The term digital image generally refers to the processing of a _____.
Answer
Correct Answer:
two-dimensional picture
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46. For which of following techniques is vector quantization used as a method?
Answer
Correct Answer:
Image compression
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47. For which of the following image data compression techniques is PCM used as a method?
Answer
Correct Answer:
Pixel coding
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48. The Wiener filter can be implemented in the frequency domain via_______.
Answer
Correct Answer:
fast unitary transform
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49. On how many input samples does the zero memory quantizer operate at a time?
Answer
Correct Answer:
One input sample
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50.
Which of the following statements represents the Bloch's law?
Answer
Correct Answer:
Light flashes of different duration but equal energy are indistinguishable.
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51. What is the range of wavelength of the light in the visible region?
Answer
Correct Answer:
380nm to 750nm
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52. White Block Skipping (WBS) is a method used for_______.
Answer
Correct Answer:
image compression
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53. To read the RMS value of which of the following waveforms are true RMS reading voltmeters used?
Answer
Correct Answer:
Both a and b
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54. In which of the following processes is the binary ladder used?
Answer
Correct Answer:
Analog to digital conversion
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55. Which of the following types of photoreceptors does the retina of the human eye contain?
Answer
Correct Answer:
rods and cones
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56. Inter-frame coding technique exploits the ______ between successive frames.
Answer
Correct Answer:
redundancy
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57. Which of the following is an application of the digital image processing?
Answer
Correct Answer:
All of the above
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58. Which of the following is an image data compression technique?
Answer
Correct Answer:
All of the above
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59. Which of the following is a linear filtering method?
Answer
Correct Answer:
All of the above
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60. In which of the following image segmentation techniques are quad- trees used?
Answer
Correct Answer:
Segmentation
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61. In the image representation , a picture-element is also called a _____.
Answer
Correct Answer:
pixel
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62.
A certain oscilloscope with a 4cm by 4cm screen has its sweep output fed to its input. If the x and y sensitivities are the same, the oscillosope will display a_______.
Answer
Correct Answer:
diagonal line
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63. A compandor is a
Answer
Correct Answer:
compressor-expander
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64. A CRO screen has 10 divisions on the horizontal line. If a voltage signal 5sin(314t + 45) is examined with a line base setting of 5 ms/divisions, the number of cycles in the signal displayed on the screen will be_______.
Answer
Correct Answer:
2.5
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65. Which of the following statement is not true?
Answer
Correct Answer:
The human eye can resolve the components of a color mixture.
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