3D Fingerprint Capture
Definition
Technology that creates a three-dimensional surface map of fingerprint ridge detail, typically using structured-light projection or photogrammetry, rather than a flat 2D optical image. Used at borders to improve enrolment quality and in laboratories to image latent prints on curved surfaces.
- Method
- Structured-light projection or photogrammetry
- Output
- 3D surface map of ridge detail, not a flat image
- Border use
- Improves enrolment quality
- Lab use
- Images latent prints on curved surfaces
Common questions
Why does 3D capture help specifically with prints on curved surfaces?+
A flat 2D photograph of a curved surface distorts ridge spacing away from the image centre, while a 3D surface map preserves true ridge geometry across the curve, allowing an accurate size and spacing comparison.
Does 3D fingerprint capture replace traditional ink-and-roll fingerprinting?+
Not entirely. It is increasingly used at borders and in laboratories as a supplement or alternative for certain applications, but ink-and-roll and flat optical scanning remain in widespread use, so it has not fully replaced them.
Related terms
- ACE-V
- Analysis, Comparison, Evaluation, Verification: the four-stage method for latent print examination used by accredited forensic fingerprint laboratories. Analysis examines the latent in...
- Amino Acid Racemisation
- The conversion of biologically produced L-amino acids to D-amino acids over time at a temperature-dependent rate. The D/L ratio of aspartic acid...
- Blind Verification
- The procedure in which a second fingerprint examiner independently performs the Analysis and Comparison stages without knowledge of the first examiner's conclusion....
- MALDI-MSI
- Matrix-assisted laser desorption ionisation mass spectrometry imaging; a technique that maps the spatial distribution of chemical compounds across a fingerprint surface without...
- Micro-Computed Tomography (Micro-CT)
- High-resolution X-ray tomography producing volumetric 3D images. Used experimentally to recover latent fingerprints from curved laboratory exhibits without destructive development.
- NIST Latent Quality Metric
- A convolutional neural network-based quality scoring tool developed by NIST that assigns a quality score to latent fingerprint images in ANSI/NIST ITL...
- Squalene
- A polyunsaturated hydrocarbon abundant in sebaceous fingerprint secretions that oxidises over time; the ratio of squalene to its oxidation products is a...
- Structured-Light Projection
- A 3D imaging method in which a known grid pattern of light is projected onto a surface; the distortion of the pattern...
- ULTR (Uniform Language for Testimony and Reports)
- US Department of Justice standards restricting the language fingerprint examiners may use in court testimony and reports, prohibiting certainty claims not supported...