scholarly journals Novel organic–inorganic hybrid powder SrGa12O19:Mn2+–ethyl cellulose for efficient latent fingerprint recognition via time-gated fluorescence

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8233-8243
Author(s):  
Jun'an Lai ◽  
Zhangwen Long ◽  
Jianbei Qiu ◽  
Dacheng Zhou ◽  
Qi Wang ◽  
...  
Keyword(s):  
Ethyl Cellulose ◽  
Fingerprint Recognition ◽  
Latent Fingerprints ◽  
Inorganic Hybrid ◽  
Latent Fingerprint ◽  
Efficient Strategy

A easy and efficient strategy for latent fingerprints recognition was developed by this work.

Application of Fingerprint-Matching Algorithm in Smart Gun Using Touch-Less Fingerprint Recognition System

2020 ◽  
pp. 122-128
Author(s):  
Saifullah Khalid
Keyword(s):  
Recognition System ◽  
Fingerprint Recognition ◽  
Fingerprint Matching ◽  
Fingerprint Image ◽  
Matching Algorithm ◽  
Latent Fingerprint ◽  
Recognition Systems

Fingerprint recognition systems are widely used in the field of biometrics. Many existing fingerprint sensors acquire fingerprint images as the user's fingerprint is contacted on a solid flat sensor. Because of this contact, input images from the same finger can be quite different and there are latent fingerprint issues that can lead to forgery and hygienic problems. For these reasons, a touchless fingerprint recognition system has been investigated, in which a fingerprint image can be captured without contact. While this system can solve the problems which arise through contact of the user's finger, other challenges emerge.

Phenyl-doped graphitic carbon nitride: photoluminescence mechanism and latent fingerprint imaging

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17737-17742 ◽  
Author(s):  
Zhiping Song ◽  
Zhihong Li ◽  
Lihua Lin ◽  
Yongfan Zhang ◽  
Tianran Lin ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Latent Fingerprints ◽  
Latent Fingerprint ◽  
Photoluminescence Mechanism

Green-photoluminescent phenyl-doped graphitic carbon nitride (PDCN) powders were prepared and applied for the visualization of latent fingerprints.

scholarly journals Non-toxic luminescent Au Nanoclusters@Montmorillonite nanocomposites powders for latent fingerprint development

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50106-50112 ◽  
Author(s):  
Yanlin Yu ◽  
Lei Yan ◽  
Zhining Xia
Keyword(s):  
Latent Fingerprints ◽  
Au Nanoclusters ◽  
Latent Fingerprint ◽  
Latent Fingerprint Development ◽  
Montmorillonite Nanocomposites

Latent fingerprints visualized by using as-prepared AuNCs@MMT nanocomposites powders as a fluorescent developing reagent on a ceramic mug.

An aggregation-induced emission luminogen combined with a cyanoacrylate fuming method for latent fingerprint analysis

The Analyst ◽  
2020 ◽  
Vol 145 (6) ◽  
pp. 2311-2318 ◽  
Author(s):  
Xiaodong Jin ◽  
Hao Wang ◽  
Ran Xin ◽  
Yining Ma ◽  
Guoping Wu ◽  
...  
Keyword(s):  
Fingerprint Analysis ◽  
Latent Fingerprints ◽  
Latent Fingerprint ◽  
Aggregation Induced Emission ◽  
Cyanoacrylate Fuming

An aggregation-induced emission luminogen tetraphenylethene-based dye FLA-2, was synthesized and characterized. Two methods were adopted herein to visualize the latent fingerprints, respectively.

scholarly journals Latent Fingerprint Segmentation Based on Ridge Density and Orientation Consistency

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Manhua Liu ◽  
Shuxin Liu ◽  
Weiwu Yan
Keyword(s):  
Local Features ◽  
Poor Quality ◽  
Texture Image ◽  
Law Enforcement Agencies ◽  
Latent Fingerprints ◽  
Latent Fingerprint ◽  
Processing Step ◽  
Fingerprint Segmentation ◽  
Fingerprint Database ◽  
Global And Local

Latent fingerprints are captured from the fingerprint impressions left unintentionally at the surfaces of the crime scene. They are often used as an important evidence to identify criminals in law enforcement agencies. Different from the widely used plain and rolled fingerprints, the latent fingerprints are usually of poor quality consisting of complex background with a lot of nonfingerprint patterns and various noises. Latent fingerprint segmentation is an important image processing step to separate fingerprint foreground from background for more accurate and efficient feature extraction and matching. Traditional methods are usually based on the local features such as gray scale variance and gradients, which are sensitive to noise and cannot work well for latent images. This paper proposes a latent fingerprint segmentation method based on combination of ridge density and orientation consistency, which are global and local features of fingerprints, respectively. First, a texture image is obtained by decomposition of latent image with a total variation model. Second, we propose to detect the ridge segments from the texture image, and then compute the density of ridge segments and ridge orientation consistency to characterize the global and local fingerprint patterns. Finally, fingerprint segmentation is performed by combining the ridge density and orientation consistency for latent images. The proposed method has been evaluated on NIST SD27 latent fingerprint database. Experimental results and comparison demonstrate the promising performance of the proposed method.

scholarly journals Latent Fingerprint Enhancement Using Tripolyphosphate-Chitosan Microparticles

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Issa M. A. Il Dueik ◽  
Gordon A. Morris
Keyword(s):  
Drug Delivery ◽  
Fingerprint Identification ◽  
Latent Fingerprints ◽  
Latent Fingerprint ◽  
Ionotropic Gelation ◽  
Chitosan Microparticles ◽  
Fingerprint Enhancement

Chitosan has been widely used in the preparation of microparticles for drug delivery; however, it has not been considered in forensic applications. Tripolyphosphate- (TPP-) chitosan microparticles were formed using ionotropic gelation in the presence of a coloured dye and deposited onto latent fingerprints enabling fingerprint identification.

Highly Emissive Near-Infrared Solid Organic Fluorophores for Visualization of Latent Fingerprints based on Powder Dusting Method

2021 ◽  
Author(s):  
Hongbing Fu ◽  
Zheng Lv ◽  
Zhongwei Man ◽  
Zhenzhen Xu ◽  
Shuai Li ◽  
...  
Keyword(s):  
Composite Powder ◽  
Near Infrared ◽  
Low Cost ◽  
Latent Fingerprints ◽  
Latent Fingerprint ◽  
Organic Fluorophores ◽  
Highly Efficient ◽  
Fluorescent Materials ◽  
Nir Emission ◽  
Powder Dusting Method

The utilization of highly efficient fluorescent materials for latent fingerprint (LFP) is attractively important for criminal investigations but remains challenging. Herein, we developed low-cost and near-infrared (NIR) emission composite powder...

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