04th
Jul
Digital Image Processing MCQ

Digital Image Processing MCQ

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  • 04th Jul, 2020
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Digital Image Processing MCQ Quiz

1) What does a shift up and right in the curves of isopreference curve simply means? Verify in terms of N (number of pixels) and k (L=2k, L is the gray level) values.

  • A. Larger values for N and k, implies better picture quality
  • B. Smaller values for N and k, implies a better picture quality
  • C. Smaller values for N and k, implies low picture quality
  • D. Larger values for N and k, implies low picture quality

2) Quantitatively, spatial resolution cannot be represented in which of the following ways:

  • A. dots
  • B. line pairs
  • C. pixels
  • D. none

3) Using rough rule of thumb, and assuming powers of 2 for convenience, what image size are about the smallest images that can be expected to be reasonably free of objectionable sampling checkerboards and false contouring?

  • A. 256*256pixels and 64 gray levels
  • B. 64*64pixels and 16 gray levels
  • C. 32*32pixels and 32 gray levels
  • D. 512*512pixels and 16 gray levels

4) The smallest discernible change in intensity level is called :

  • A. Saturation
  • B. Contrast
  • C. Intensity Resolution
  • D. Contour

5) For line detection we use mask that is:

  • A. laplacian
  • B. butterworth
  • C. ideal
  • D. Gaussian

6) How is sampling accomplished when a sensing array is used for image acquisition?

  • A. The number of sensors in the strip establishes the sampling limitations in one image direction and Mechanical motion in the other direction
  • B. The number of mechanical increments at which we activate the sensor to collect data
  • C. The number of sensors in the sensing array defines the limits of sampling in both directions
  • D. None

7) ........is the total amount of energy that flows from light source:

  • A. Darkness
  • B. Brightness
  • C. Radiance
  • D. Luminance

8) Orthonormal filter is developed around filter called:

  • A. Digital segment filtering
  • B. prototype
  • C. up sampling
  • D. filtering

9) For an image with a large amount of detail, if the value of N (number of pixels) is fixed then what is the gray level dependency in the perceived quality of this type of image?

  • A. Nearly independent of the number of gray levels used
  • B. Highly dependent of the number of gray levels used
  • C. Totally independent of the number of gray levels used
  • D. None

10) For a continuous image f(x, y), Quantization is defined as:

  • A. Digitizing the amplitude values
  • B. Digitizing the coordinate values
  • C. Both A & B
  • D. None of these

11) What is the third step in digital image processing?

  • A. Image Restrotion
  • B. Image Enhancement
  • C. Colour Image Processing
  • D. Segmentation

12) Digital functions' derivatives are defined as:

  • A. multiplication
  • B. division
  • C. differences
  • D. addition

13) Bandwidth compression means:

  • A. Digital compression
  • B. Analog compression
  • C. Relative compression
  • D. None

14) If the inner region of the object is textured then approach we use is:

  • A. recognition
  • B. discontinuity
  • C. extraction
  • D. similarity

15) A continuous image is digitised at _______ points

  • A. random
  • B. sampling
  • C. contour
  • D. vertex

16) Decision tree and support vector machine is an example of:

  • A. structural matching
  • B. statistical classification
  • C. template matching
  • D. neural network

17) Which of the following file formats is an example of lossy compression only?

  • A. PNG
  • B. TIFF
  • C. JPEG
  • D. GIF

18) How does the curves behave to the detail in the image in isopreference curve?

  • A. Curves tend to become less vertical as the detail in the image increases
  • B. Curves tend to become less vertical as the detail in the image decreases
  • C. Curves tend to become more vertical as the detail in the image decreases
  • D. Curves tend to become more vertical as the detail in the image increases

19) Subband of input image, showing dH(m,n) is called:

  • A. horizontal detail
  • B. diagonal detail
  • C. approximation
  • D. vertical detail

20) Intensity levels in 8bit image are:

  • A. 256
  • B. 512
  • C. 255
  • D. 128

21) The area in which the receptors are absent is called:

  • A. blind spot
  • B. rods
  • C. fovea
  • D. hot spot

22) What is the tool used in tasks such as zooming, shrinking, rotating, etc.?

  • A. Filters
  • B. Interpolation
  • C. Sampling
  • D. None of the above

23) Lossy compression is useful in:

  • A. Medical imaging
  • B. Television broad casting
  • C. Military imaging
  • D. Space imaging

24) What is a band-limited function?

  • A. A function of limited duration whose highest frequency is infinite
  • B. A function of limited duration whose highest frequency is finite
  • C. Both A & B
  • D. none

25) The procedure of obtaining images of blood vessels is called:

  • A. cryptography
  • B. geography
  • C. biography
  • D. angiography

26) The type of Interpolation where for each new location the intensity of the immediate pixel is assigned is:

  • A. nearest neighbour interpolation
  • B. cubic interpolation
  • C. bicubic interpolation
  • D. bilinear interpolation

27) The transition between continuous values of the image function and its digital equivalent is called.....

  • A. Sampling
  • B. Rasterisation
  • C. Quantisation
  • D. none

28) The base of image pyramid contains:

  • A. intensity
  • B. low resolution
  • C. high resolution
  • D. blurred portion

29) Dynamic range of imaging system is a ratio where the upper limit is determined by:

  • A. Noise
  • B. Brightness
  • C. Saturation
  • D. Contrast

30) Images quantised with insufficient brightness levels will lead to the occurrence of:

  • A. False Contours
  • B. Pixillation
  • C. Blurring
  • D. None of the above

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