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zenodo44/100

Firemaker image collection for benchmarking forensic writer identification using image-based pattern recognition

<p>Disclaimer and terms of use:<br> ============================</p> <p>/*****************************************************************************\<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; This is the Firemaker NFI-images Distribution &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; This distribution contains 1000 images of scanned handwritten text, &nbsp; &nbsp; &nbsp; *<br> * &nbsp; scanned at resolution 300dpi grey scale, containing pages of &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;*<br> * &nbsp; handwritten text by 250 writers, four pages per writer, from four &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; writing conditions, one condition per page. The conditions are: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; p1: copied, natural style, p2: copied, UPPER case, p3: copied and forged, *<br> * &nbsp; i.e.,&quot;try to write in a different style than your natural style&quot;, and p4, *<br> * &nbsp; self generated, i.e., text produced to describe a given cartoon. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; Copyright The International Unipen Foundation, 2000, All rights reserved &nbsp;*<br> *******************************************************************************<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;DISCLAIMER AND COPYRIGHT NOTICE FOR ALL DATA CONTAINED ON THIS CDROM: &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;1) PERMISSION IS HEREBY GRANTED TO USE THE DATA FOR RESEARCH &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; PURPOSES. IT IS NOT ALLOWED TO DISTRIBUTE THIS DATA FOR COMMERCIAL &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; PURPOSES. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;2) PROVIDER GIVES NO EXPRESS OR IMPLIED WARRANTY OF ANY KIND AND ANY &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PURPOSE ARE &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; DISCLAIMED. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;3) PROVIDER SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THIS &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; DATA. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;4) THE USER SHOULD REFER TO THE FIRST PUBLIC ARTICLE ON THIS DATA SET: &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; M. Bulacu, L. Schomaker &amp; L. Vuurpijl (2003). &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; Writer identification using edge-based directional features. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; ICDAR &#39;03: Proceedings of the 7th International Conference on Document &nbsp;*<br> * &nbsp; &nbsp; Analysis and Recognition, pp. 937-941. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;*<br> * &nbsp; &nbsp; Piscataway: IEEE Computer, ISBN 0-7695-1960-1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> * &nbsp;5) THE RECIPIENT SHOULD REFRAIN FROM PROLIFERATING THE DATA SET TO THIRD &nbsp; *<br> * &nbsp;PARTIES EXTERNAL TO HIS/HER LOCAL RESEARCH GROUP. PLEASE REFER INTERESTED &nbsp;*<br> * &nbsp;RESEARCHERS TO HTTP://UNIPEN.ORG FOR OBTAINING THEIR OWN COPY. &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *<br> \*****************************************************************************/</p> <p>BibTeX entry: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</p> <p>&nbsp; @inproceedings{Firemaker, &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br> &nbsp; &nbsp; author = {Bulacu, M. and Schomaker, L.R.B. and Vuurpijl, L.}, &nbsp; &nbsp;<br> &nbsp; &nbsp; title = {Writer Identification Using Edge-Based Directional Features},<br> &nbsp; &nbsp; booktitle = {ICDAR &#39;03: Proceedings of the 7th International&nbsp;<br> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Conference on Document Analysis and Recognition},<br> &nbsp; &nbsp; year = {2003},<br> &nbsp; &nbsp; isbn = {0-7695-1960-1},<br> &nbsp; &nbsp; pages = {937-941},<br> &nbsp; &nbsp; publisher = {IEEE Computer Society},<br> &nbsp; &nbsp; address = {Washington, DC, USA},<br> &nbsp; &nbsp;}</p> <p>In the project &quot;Vergelijk&quot;, a grant obtained from the Dutch Forensic Science<br> Institute, two existing professional writer-identification systems have been&nbsp;<br> compared regarding usability studies and in particular recognition&nbsp;<br> performance (Schomaker &amp; Vuurpijl, 2000). The results of this comparison&nbsp;<br> are contained in a confidential report:</p> <p>&nbsp; L.R.B. Schomaker and L.G. Vuurpijl (2000).&nbsp;<br> &nbsp; Forensic writer identification: A benchmark data set&nbsp;<br> &nbsp; and a comparison of two systems. Technical report,&nbsp;<br> &nbsp; Nijmegen Institute for Cognition and Information (NICI),&nbsp;<br> &nbsp; University of Nijmegen, The Netherlands.</p> <p>Informative and non-confidential details from this report are&nbsp;<br> given in the accompanying file: &nbsp;&#39;firemaker-dbase.pdf&#39;</p> <p>To compare both systems, a carefully designed experiment was conducted to<br> record handwritten samples from male and female writers in several conditions:</p> <p>Condition 1: Normal constrained handwriting<br> ==============================================</p> <p>Below, the Dutch text writers had to produce in normal handwriting is given.&nbsp;</p> <p>--- start text ----<br> Zij bezochten veilingen en reisden met de KLM. Voor<br> korte afstanden huurden ze een auto, meestal een VW<br> of een Ford.<br> &lt;EMPTY LINE&gt;<br> De veilingen waren van 7-4-1993 tot 3-5-1993 in New<br> York, Tokyo, Qu&eacute;bec, Rome, Parijs, Z&uuml;rich en Oslo.<br> &lt;EMPTY LINE&gt;<br> Omdat de veilingen steeds begonnen om 12 uur en je<br> gemiddeld 200 tot 300 kilometer moest rijden,<br> stonden zij steeds om 6.30 uur op en vertrokken om<br> 8 uur uit het hotel.<br> &lt;EMPTY LINE&gt;<br> Elke dag hadden ze vijfhonderd (f 500,-) gulden<br> nodig. Daarvoor gebruikten ze elke keer een cheque<br> van tweehonderd (f 200,-) en een cheque van<br> driehonderd (f 300,-) gulden. Aan geschenken gaven<br> ze ongeveer honderd gulden (f 100,-) uit.<br> --- end text ----</p> <p><br> Condition 2: Production of constrained block capital handwriting<br> ================================================================</p> <p>In this condition, the writers had to produce the following text<br> in block-capital handwriting:</p> <p>--- start text ----<br> NADAT ZE IN NEW YORK, TOKYO, QU&Eacute;BEC, PARIJS, Z&Uuml;RICH<br> EN OSLO WAREN GEWEEST, VLOGEN ZE UIT DE USA TERUG<br> MET VLUCHT KL 658 OM 12 UUR.<br> &lt;empty line&gt;<br> ZE KWAMEN AAN IN DUBLIN OM 7 UUR EN IN AMSTERDAM OM<br> 9.40 UUR &#39;S AVONDS. DE FIAT VAN BOB EN DE VW VAN<br> DAVID STONDEN IN R3 VAN HET PARKEERTERREIN.<br> HIERVOOR MOESTEN ZE HONDERD GULDEN (F 100,-)<br> BETALEN.<br> --- end text ----</p> <p><br> Condition 3: Production of free-forged handwriting<br> ==================================================</p> <p>Below, the text writers had to produce in the free-forged handwriting<br> condition is given. No example of handwriting is given which they have to<br> mimick (forge), the condition concerns a self-conceived distorted&nbsp;<br> handwriting style.</p> <p>--- start text ----<br> Nog dezelfde avond reden ze naar hun vrienden<br> Chris, Emile, Jan, Irene en Henk, nadat ze hun<br> vriendinnen Greta en Maria hadden opgehaald.<br> &lt;EMPTY LINE&gt;<br> Samen hadden ze vijfhonderd (500) zeldzame<br> postzegels gekocht, Bob driehonderd (300) en David<br> tweehonderd (200).<br> &lt;EMPTY LINE&gt;<br> De reis was de moeite waard geweest.<br> --- end text ----</p> <p><br> Condition 4: Production of unconstrained handwriting<br> ====================================================</p> <p>The final text writers had to produce is unconstrained handwriting.<br> The cartoon, a series of pictures concerning a &#39;UFO&#39; landing had<br> to be described in their own words, in at least six lines of text.<br> See image file &quot;space.gif&quot;.</p> <p><br> Thruth labels and writer identifications<br> ========================================</p> <p>Each writer has a unique id, specified as:</p> <p>&nbsp; &nbsp;id: &nbsp; {num}{set}<br> &nbsp; num: &nbsp; a three-digit number<br> &nbsp;set: &nbsp; &nbsp;either 01, 02, 03 or 04, identifying one of the 4 experiments</p> <p>The vast majority of the writers producing sets 01, 02 and 03 mimicked the<br> content and layout (empty lines) of the constrained texts they had to copy<br> sufficiently accurately, such that the example texts are a good indication of<br> the contents. However, as set 04 (&quot;describe cartoon story&quot;) &nbsp;contains<br> unconstrained self-generated handwriting, the corresponding thruth &nbsp;labels had<br> to be extracted manually. The resulting label files are contained in &nbsp;the<br> directory ./300dpi/p4-self-natural/labels/</p> <p>Note: no letter, word, line or paragraph segmentation is provided with this<br> data set. The main text can be cropped easily. Since the orientation is<br> horizontal, projection techniques can be used to extract lines, using<br> a line-spacing parameter (~94 pixels line height) as an additional check.&nbsp;</p> <p><br> Overview of directories:</p> <p>300dpi/<br> &nbsp; &nbsp;p1-copy-normal/ &nbsp; &nbsp; &nbsp;Copying task, normal writing style &nbsp;<br> &nbsp; &nbsp;p2-copy-upper/ &nbsp; &nbsp; &nbsp; Copying task, UPPER-case&nbsp;<br> &nbsp; &nbsp;p3-copy-forged/ &nbsp; &nbsp; &nbsp;Copying task, instructed to mimic another script style<br> &nbsp; &nbsp;p4-self-natural/ &nbsp; &nbsp; Self-generated text, natural writing condition</p> <p>Note: the original raw collection contained writer #155, who has been removed<br> from this data set, as his first condition (p1) was started in upper case and<br> the page was not &nbsp;completed. Deleted files were 15501.tif, 15502.tif, 15503.tif<br> and 15504.tif.</p> <p>Note: the name of this data set (Firemaker) is a contraction of the names<br> Vuurpijl and Schomaker.</p> <p>Note b: Example of a cutout of essential handwritten text using NetPBM tools: &nbsp;<br> &nbsp;tifftopnm 15201.tif | pnmcut -left 50 -right 2400 -top 700 -bottom 3250 &gt; handwriting.pgm</p> <p>&nbsp;For an experiment, the upper and lower halves of the resulting image were<br> &nbsp;usually used in the Schomaker &amp; Bulacu studies to obtain two samples of&nbsp;<br> &nbsp;handwriting for a writer.</p> <p>&nbsp;http://www.ai.rug.nl/~lambert<br> &nbsp;http://www.ai.rug.nl/~bulacu</p> <p>Our features for writer identification:</p> <p>Lambert Schomaker<br> &nbsp;http://www.ai.rug.nl/~lambert/allographic-fraglet-codebooks/allographic-fraglet-codebooks.html<br> &nbsp;L. Schomaker &amp; M. Bulacu (2004).&nbsp;<br> &nbsp;Automatic writer identification using connected-component contours and edge-based features of upper-case Western script.&nbsp;<br> &nbsp;IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol 26(6), June 2004, pp. 787 - 798.</p> <p>Marius Bulacu<br> &nbsp;http://www.ai.rug.nl/~lambert/hinge/hinge-transform.html<br> &nbsp;Bulacu, M. &amp; Schomaker, L.R.B. (2007).&nbsp;<br> &nbsp;Text-independent Writer Identification and Verification Using Textural and Allographic Features,&nbsp;<br> &nbsp;IEEE Trans. on Pattern Analysis and Machine Intelligence (PAMI), Special Issue - Biometrics: Progress and Directions, April, 29(4), p. 701-717.</p> <p>Axel Brink<br> &nbsp;http://www.ai.rug.nl/~axel/ &nbsp;&#39;Quill&#39; feature<br> &nbsp;A.A. Brink, J. Smit, M.L. Bulacu, and L.R.B. Schomaker (2011).&nbsp;<br> &nbsp;Writer identification using directional ink-trace width measurements,&nbsp;<br> &nbsp;Pattern Recognition (July 2011), doi: 10.1016/j.patcog.2011.07.005<br> &nbsp;<br> These three feature groups (hinge, fraglets, quill) have been combined in<br> a single MS Windows application, GIWIS which is available for scientific<br> use upon request (schomaker@ai.rug.nl)</p> <p>Note c.</p> <p>The accompanying file &#39;Firemaker-writer-info.dat&#39; contains some<br> writer information:&nbsp;<br> Column 1: writer identification code<br> Column 2: sex<br> Column 3: handedness,&nbsp;<br> Column 4: age in years<br> Column 5: major Western script group (print,cursive or mixed)<br> &nbsp;</p>

opencc-by-4.0Dec 1999View details →
zenodo40/100

Dataset Literature Review Digital Forensic and Image Processing

<p>Data ini digunakan untuk membuat penelitian sesuai dengan tinjauan literatur dengan kata kunci &quot;<em>digital forensic</em>&quot; dan &quot;<em>image processing</em>&quot;</p>

opencc-by-4.0Nov 2022View details →
zenodo40/100

Dataset Literature Review Digital Forensic AND Image Processing

<p>Data ini digunakan untuk membuat penelitian berdasarkan tinjauan literatur dengan kata kunci &quot;digital forensic&quot; dan &quot;image processing&quot;&nbsp;</p>

opencc-by-4.0Nov 2022View details →
zenodo32/100

digital forensic AND imaging

<p>upload dari lens.org</p>

opencc-by-4.0Nov 2022View details →
ClinicalTrials.gov32/100

Age Estimation From Pulp Cavity Analysis Using Cone Beam Computed Tomographic Images for Forensic Purposes

ClinicalTrials.gov study NCT05130164. IPD Sharing: NO. Countries: 1. Publications: 1.

closedIPD-NOFeb 2026View details →
dryad28/100

Data from: Perceptual expertise in forensic facial image comparison

Open the record for dataset details and reuse information.

publicSep 2015View details →

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