Q. In spatial domain, which of the following operation is done on the pixels in sharpening the image?

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Q. Image differentiation enhances the edges, discontinuities and deemphasizes the pixels with slow varying gray levels.

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Q. In which of the following cases, we wouldn’t worry about the behaviour of sharpening filter?

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Q. Which of the following is the valid response when we apply a first derivative?

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Q. Which of the following is not a valid response when we apply a second derivative?

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Q. If f(x,y) is an image function of two variables, then the first order derivative of a one dimensional function, f(x) is:

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Q. Isolated point is also called as noise point.

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Q. What is the thickness of the edges produced by first order derivatives when compared to that of second order derivatives?

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Q. First order derivative can enhance the fine detail in the image compared to that of second order derivative.

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Q. Which of the following derivatives produce a double response at step changes in gray level?

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Q. The objective of sharpening spatial filters is/are to ___________

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Q. Sharpening is analogous to which of the following operations?

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Q. Which of the following fact(s) is/are true about sharpening spatial filters using digital differentiation?

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Q. Which of the facts(s) is/are true for the first order derivative of a digital function?

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Q. Which of the facts(s) is/are true for the second order derivative of a digital function?

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Q. The derivative of digital function is defined in terms of difference. Then, which of the following defines the first order derivative ∂f/∂x= ___________ of a one-dimensional function f(x)?

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Q. The derivative of digital function is defined in terms of difference. Then, which of the following defines the second order derivative ∂2 f/∂x2 = ___________ of a one-dimensional function f(x)?

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Q. What kind of relation can be obtained between first order derivative and second order derivative of an image having a on the basis of edge productions that shows a transition like a ramp of constant slope?

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Q. What kind of relation can be obtained between first order derivative and second order derivative of an image on the response obtained by encountering an isolated noise point in the image?

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Q. What kind of relation can be obtained between the response of first order derivative and second order derivative of an image having a transition into gray-level step from zero?

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