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Which of the following filter have a less sharp detail than the original image because of attenuation of high frequencies?

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in Digital Image Processing by (701k points)
Which of the following filter have a less sharp detail than the original image because of attenuation of high frequencies?

(a) Highpass filter

(b) Lowpass filter

(c) Zero-phase-shift filter

(d) None of the mentioned

The question was posed to me in a job interview.

My doubt stems from Filtering in Frequency Domain in portion Intensity Transformations and Spatial Filtering of Digital Image Processing

1 Answer

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Best answer
Correct answer is (b) Lowpass filter

The best explanation: A lowpass filter attenuates high so the image has less sharp details.

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