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The Image sharpening in frequency domain can be achieved by which of the following method(s)?

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The Image sharpening in frequency domain can be achieved by which of the following method(s)?

(a) Attenuating the high frequency components

(b) Attenuating the low-frequency components

(c) All of the mentioned

(d) None of the mentioned

The question was asked during an interview.

The origin of the question is Gaussain Lowpass and Sharpening Frequency Domain Filters in chapter Filtering in Frequency Domain of Digital Image Processing

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The correct option is (b) Attenuating the low-frequency components

Explanation: The Image sharpening in frequency domain is achieved by attenuating the low-frequency components without disturbing the high-frequency components.

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