Frequency Filtering

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1. Which explanation matches low-pass filters and fine detail?A. A low-pass filter attenuates high spatial frequencies, including fine texture and sharp edges.B. High-pass filtering reduces slowly changing regions and emphasizes rapid spatial change.C. A notch filter suppresses selected frequency regions rather than all fine detail.D. An abrupt frequency cutoff can produce ringing in the spatial result.

2. Which explanation matches high-pass filters and noise?A. A low-pass filter attenuates high spatial frequencies, including fine texture and sharp edges.B. A notch filter suppresses selected frequency regions rather than all fine detail.C. An abrupt frequency cutoff can produce ringing in the spatial result.D. High-pass filtering reduces slowly changing regions and emphasizes rapid spatial change.

3. Which explanation matches remove periodic interference with notches?A. A low-pass filter attenuates high spatial frequencies, including fine texture and sharp edges.B. High-pass filtering reduces slowly changing regions and emphasizes rapid spatial change.C. A notch filter suppresses selected frequency regions rather than all fine detail.D. An abrupt frequency cutoff can produce ringing in the spatial result.

4. For high-pass filters and noise, which result or action fits this practical case: A high-pass view makes a pale stripe obvious but also magnifies grain.A. Compare a mild cutoff with an aggressive one on a scan containing tiny real features.B. Inspect both the bright defect and a quiet background after filtering.C. Identify symmetric peaks from periodic interference and attenuate a narrow neighborhood around them.D. Compare a sharp cutoff with a gradual transition on the same high-contrast boundary.

5. For recognize ringing near sharp boundaries, which result or action fits this practical case: Bright and dark ripples appear beside a sharp edge after frequency filtering.A. Compare a sharp cutoff with a gradual transition on the same high-contrast boundary.B. Compare a mild cutoff with an aggressive one on a scan containing tiny real features.C. Inspect both the bright defect and a quiet background after filtering.D. Identify symmetric peaks from periodic interference and attenuate a narrow neighborhood around them.

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Frequency Filtering

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