Q. What does using a mask having central coefficient maximum and then the coefficients reducing as a function of increasing distance from origin results?

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Q. What is the relation between blurring effect with change in filter size?

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Q. 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?

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Q. 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”?

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Q. 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?

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Q. 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?

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Q. 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?

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Q. Which of the following are forced to the median intensity of the neighbors by n*n median filter?

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Q. Which filter(s) used to find the brightest point in the image?

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Q. The median filter also represents which of the following ranked set of numbers?

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Q. Which of the following filter represents a 0th percentile set of numbers?

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Q. In neighborhood operations working is being done with the value of image pixel in the neighborhood and the corresponding value of a subimage that has same dimension as neighborhood. The subimage is referred as _________

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Q. The response for linear spatial filtering is given by the relationship __________

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Q. In linear spatial filtering, what is the pixel of the image under mask corresponding to the mask coefficient w (1, -1), assuming a 3*3 mask?

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Q. Which of the following is/are a nonlinear operation?

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Q. Which of the following is/are used as basic function in nonlinear filter for noise reduction?

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Q. In neighborhood operation for spatial filtering if a square mask of size n*n is used it is restricted that the center of mask must be at a distance ≥ (n – 1)/2 pixels from border of image, what happens to the resultant image?

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Q. Which of the following method is/are used for padding the image?

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Q. In neighborhood operation for spatial filtering using square mask of n*n, which of the following approach is/are used to obtain a perfectly filtered result irrespective of the size?

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Q. 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?

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