Smoothing Nonlinear Spatial Filter MCQ

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• Which of the following filter represents a 0th percentile set of numbers?
  ক

  Max filter

  খ

  Mean filter

  গ

  Median filter

  ঘ

  None of the mentioned
• The median filter also represents which of the following ranked set of numbers?
  ক

  100th percentile

  খ

  0th percentile

  গ

  50th percentile

  ঘ

  None of the mentioned
• Which filter(s) used to find the brightest point in the image?
  ক

  Median filter

  খ

  Max filter

  গ

  Mean filter

  ঘ

  All of the mentioned
• Which of the following are forced to the median intensity of the neighbors by n*n median filter?
  ক

  Isolated cluster of pixels that are light or dark in comparison to their neighbors

  খ

  Isolated cluster of pixels whose area is less than one-half the filter area

  গ

  All of the mentioned

  ঘ

  None of the mentioned
• While performing the median filtering, suppose a 3*3 neighborhood has value (10, 20, 20, 20, 15, 20, 20, 25, 100), then what is the median value to be given to the pixel under filter?
  ক

  15

  খ

  20

  গ

  100

  ঘ

  25
• An image contains noise having appearance as black and white dots superimposed on the image. Which of the following noise(s) has the same appearance?
  ক

  Salt-and-pepper noise

  খ

  Gaussian noise

  গ

  All of the mentioned

  ঘ

  None of the mentioned
• Two filters of similar size are used for smoothing image having impulse noise. One is median filter while the other is a linear spatial filter. Which would the blurring effect of both?
  ক

  Median filter effects in considerably less blurring than the linear spatial filters

  খ

  Median filter effects in considerably more blurring than the linear spatial filters

  গ

  Both have the same blurring effect

  ঘ

  All of the mentioned
• Is it true or false that “the original pixel value is included while computing the median using gray-levels in the neighborhood of the original pixel in median filter case”?
  ক

  True

  খ

  False
• Which of the following filter(s) has the response in which the central pixel value is replaced by value defined by ranking the pixel in the image encompassed by filter?
  ক

  Order-Statistic filters

  খ

  Non-linear spatial filters

  গ

  Median filter

  ঘ

  All of the mentioned