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Which of the following is the disadvantage of using smoothing filter?

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in Digital Image Processing by (701k points)
Which of the following is the disadvantage of using smoothing filter?

(a) Blur edges

(b) Blur inner pixels

(c) Remove sharp transitions

(d) Sharp edges

The question was posed to me in an international level competition.

My query is from Smoothing Spatial Filters topic in portion Intensity Transformations and Spatial Filtering of Digital Image Processing

1 Answer

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Best answer
The correct option is (a) Blur edges

Explanation: Edges, which almost always are desirable features of an image, also are characterized by sharp transitions in gray level. So, averaging filters have an undesirable side effect that they blur these edges.

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