Production of 3D fingertip replicas using a 3D scanning-3D printing-casting strategy

Micah Mundy; Beiwen Li

doi:10.1117/12.3014171

8 June 2024 Production of 3D fingertip replicas using a 3D scanning-3D printing-casting strategy

Micah Mundy, Beiwen Li

Proceedings Volume 13038, Dimensional Optical Metrology and Inspection for Practical Applications XIII; 130380H (2024) https://doi.org/10.1117/12.3014171
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

3D scans of fingerprints can be more informative than their conventional 2D counterparts by measuring a finger's profile and its fingerprint ridge patterns. Capturing finger profiles may be advantageous for identifying individuals whose fingerprints have been altered or hidden or whose hands are of a unique structure. We establish a novel pipeline for producing silicone fingerprint replicas with sufficient detail to spoof a commercially available, low-cost fingerprint sensor to demonstrate that a single contactless 3D scan can capture a finger's ridge patterns and profile simultaneously with high fidelity. This pipeline employs a scanning-printing-casting (SPC) strategy: A laboratory-made structured-light 3D scanner obtains 3D fingerprints within half a second. Molds of the digitized fingerprints are 3D modeled and printed, and silicone is poured into the molds and allowed to cure to complete the fingerprint replication process.

Conference Presentation

Citation Download Citation

Micah Mundy and Beiwen Li "Production of 3D fingertip replicas using a 3D scanning-3D printing-casting strategy", Proc. SPIE 13038, Dimensional Optical Metrology and Inspection for Practical Applications XIII, 130380H (8 June 2024); https://doi.org/10.1117/12.3014171

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