A Universal Latent Fingerprint Enhancer Using Transformers

by   André Brasil Vieira Wyzykowski, et al.
Michigan State University

Forensic science heavily relies on analyzing latent fingerprints, which are crucial for criminal investigations. However, various challenges, such as background noise, overlapping prints, and contamination, make the identification process difficult. Moreover, limited access to real crime scene and laboratory-generated databases hinders the development of efficient recognition algorithms. This study aims to develop a fast method, which we call ULPrint, to enhance various latent fingerprint types, including those obtained from real crime scenes and laboratory-created samples, to boost fingerprint recognition system performance. In closed-set identification accuracy experiments, the enhanced image was able to improve the performance of the MSU-AFIS from 61.56% to 75.19% in the NIST SD27 database, from 67.63% to 77.02% in the MSP Latent database, and from 46.90% to 52.12% in the NIST SD302 database. Our contributions include (1) the development of a two-step latent fingerprint enhancement method that combines Ridge Segmentation with UNet and Mix Visual Transformer (MiT) SegFormer-B5 encoder architecture, (2) the implementation of multiple dilated convolutions in the UNet architecture to capture intricate, non-local patterns better and enhance ridge segmentation, and (3) the guided blending of the predicted ridge mask with the latent fingerprint. This novel approach, ULPrint, streamlines the enhancement process, addressing challenges across diverse latent fingerprint types to improve forensic investigations and criminal justice outcomes.


page 1

page 3

page 4

page 6

page 7


Synthetic Latent Fingerprint Generator

Given a full fingerprint image (rolled or slap), we present CycleGAN mod...

Automatic Cropping Fingermarks: Latent Fingerprint Segmentation

We present a simple but effective method for automatic latent fingerprin...

Accelerated Fingerprint Enhancement: A GPU-Optimized Mixed Architecture Approach

This document presents a preliminary approach to latent fingerprint enha...

A Latent Fingerprint in the Wild Database

Latent fingerprints are among the most important and widely used evidenc...

Single architecture and multiple task deep neural network for altered fingerprint analysis

Fingerprints are one of the most copious evidence in a crime scene and, ...

Automated Latent Fingerprint Recognition

Latent fingerprints are one of the most important and widely used eviden...

FingerNet: An Unified Deep Network for Fingerprint Minutiae Extraction

Minutiae extraction is of critical importance in automated fingerprint r...

Please sign up or login with your details

Forgot password? Click here to reset