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History of Fingerprint
Identification
‘Natural’ article by Henry Faulds.
Skin Furrows of the hand’
By William Herschel
Image Enhancement
Third level detail
The Fourier Transform
Digital images as evidence
Gallery
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Click on any image to enlarge; but please be aware that they have been heavily compressed with JPG and will therefore show some pixelisation.
Click to see another article on the FFT
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Enhancements with FFT
The two adjacent fingerprint were developed with Sticky side powder and photographed with cross polarisation. Without the use of polarisation  it was impossible to distinguish the fingerprints due to the high level of reflections on the sticky tape.
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Click to see the fingerprint impressions in Ninhydrin photographed with the green filter on the ring-light.
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Click to enlarge the footprint
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