Fourier Low-Pass Filter
Frequency-domain filtering that keeps only broad, slow variations and removes fine detail. It creates smooth blur with characteristic ringing ripples around edges when the cutoff is sharp.
Spot it
- 01Soft blurred forms
- 02Ringing ripples at edges
- 03Lost fine texture
Why it happens
The image is transformed to frequencies, high frequencies beyond a cutoff radius are zeroed, and the inverse transform returns a smoothed picture.
Recreate it in Pixio
Image edit prompt“Apply an ideal Fourier low-pass filter to this image: only the broad shapes remain, fine texture and detail removed, soft blur with faint concentric ringing ripples echoing around strong edges, muted contrast, colors kept. Keep the original subject and composition.”
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