Pen Ink Library: An interactive database of writing instruments based on Vis-NIR reflection spectra and optical properties of inks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F26%3A0198296" target="_blank" >RIV/00216305:26220/26:0198296 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00007064:K01__/25:N0000037

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S037907382500146X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S037907382500146X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.forsciint.2025.112508" target="_blank" >10.1016/j.forsciint.2025.112508</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pen Ink Library: An interactive database of writing instruments based on Vis-NIR reflection spectra and optical properties of inks

Popis výsledku v původním jazyce

Many tasks in forensic examination of handwritten documents require classification of writing instruments that have ink of similar properties as the ink found on a questioned document. In this paper, we propose a new methodology for non-destructive identification of inks based on optical properties and reflectance spectra of the ink, measured from handwriting strokes. Building on this methodology, we developed an interactive database that we call the “Pen Ink Library”, which lists 718 various writing instruments and enables systematic comparison and semi-automatic search of writing instruments, using the measured characteristics of their ink. To highlight the significance and applicability of the database, we additionally exploit the large amounts of collected measurements to design computer-based data analysis methods for classification and comparative analysis of ink samples. For validation of the semi-automatic search functionality of the Pen Ink Library we performed a series of blind tests using twenty randomly selected writing instruments. Here, an instrument with the same brand and model was found in nine cases, and an instrument with a different brand and model, but with identical spectrum and optical parameters, was found in five cases. Cross-validation of the computer-based data analysis methods on the measurements from the database yielded above 90 % accuracy of the classification method and 5.3 % to 12.7 % error rate of the comparative analysis method.

Název v anglickém jazyce

Pen Ink Library: An interactive database of writing instruments based on Vis-NIR reflection spectra and optical properties of inks

Popis výsledku anglicky

Many tasks in forensic examination of handwritten documents require classification of writing instruments that have ink of similar properties as the ink found on a questioned document. In this paper, we propose a new methodology for non-destructive identification of inks based on optical properties and reflectance spectra of the ink, measured from handwriting strokes. Building on this methodology, we developed an interactive database that we call the “Pen Ink Library”, which lists 718 various writing instruments and enables systematic comparison and semi-automatic search of writing instruments, using the measured characteristics of their ink. To highlight the significance and applicability of the database, we additionally exploit the large amounts of collected measurements to design computer-based data analysis methods for classification and comparative analysis of ink samples. For validation of the semi-automatic search functionality of the Pen Ink Library we performed a series of blind tests using twenty randomly selected writing instruments. Here, an instrument with the same brand and model was found in nine cases, and an instrument with a different brand and model, but with identical spectrum and optical parameters, was found in five cases. Cross-validation of the computer-based data analysis methods on the measurements from the database yielded above 90 % accuracy of the classification method and 5.3 % to 12.7 % error rate of the comparative analysis method.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

50502 - Criminology, penology

Projekt

<a href="/cs/project/VJ02010019" target="_blank" >VJ02010019: Nástroje forenzní expertizy ručně psaného písma</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Forensic Science International

ISSN

0379-0738

e-ISSN

1872-6283

Svazek periodika

373

Číslo periodika v rámci svazku

Srpen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

001511440000001

EID výsledku v databázi Scopus

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