DOI: 10.22002/87d3f-6yx56
title: Caltech Vision Group Signature Data

description: ******************************************************************************   Caltech Vision Group Signature Data version 1.0*   (c) Mario E. Munich & Pietro Perona*   California Institute of Technology*   Copyright 1998-2002**       In case that this data is used for a publication, please*       cite the following articles:**   @ARTICLE{munichP02,*   AUTHOR = {M.E.~Munich and P.~Perona},*   TITLE = {Visual Input for Pen Based Computers},*   JOURNAL = {IEEE Trans. Pattern Analysis and Machine Intelligence},*   YEAR = {2002},*   VOLUME = {24},*   NUMBER = {3},*   PAGES = {313--328}*   }**   @ARTICLE{munichP03,*   AUTHOR = {M.E.~Munich and P.~Perona},*   TITLE = {Visual Identification by Signature Tracking},*   JOURNAL = {IEEE Trans. Pattern Analysis and Machine Intelligence},*   YEAR = {2003}*   }**   @ARTICLE{munichP95,*   AUTHOR = {M.E.~Munich and P.~Perona},*   TITLE = {Apparatus and Method for Tracking Handwriting from Visual Input*   },*   JOURNAL = {US Patent 6,044,165},*   YEAR = {filed 6/15/1995, granted 3/28/2000}*   }**   Disclaimer:*       The data is provided "as is", without warranty of any kind.*   The authors shall not be liable for any damages arising*   from the use of the data.**   License:*   This data is free software and it is intended ONLY for academic*   purposes, no commercial use is allowed; you can redistribute it and/or*   modify it under the terms of the GNU General Public License*   as published by the Free Software Foundation; either version 2*   of the License, or (at your option) any later version.**   This data is distributed in the hope that it will be useful,*   but WITHOUT ANY WARRANTY; without even the implied warranty of*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the*   GNU General Public License for more details.**   You should have received a copy of the GNU General Public License*   along with this program; if not, write to the Free Software*   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,*   USA.*****************************************************************************Installation:------------The data consists of the following:set1  --> signatures from 56 subjects (25 signatures and 10 forgeries)set2  --> signatures from 50 subjects (30 signatures and 10 forgeries)The data is provided in a compressed tar ball.Use the command:    tar -xvzf signDist1.0.tgzand the data would be installed in its own directory signDist1.0.The directory structure is the following:    signDist1.0 ---\                       |              |--- set1 ---\                       |            |                       |            |--- listset1                       |            |                       |            |--- data ---\                       |            |            |                       |            |            |--- s001 ---\                       |            |            |            |                       |            |            |            |--- s001000                       |            |            |            |--- s001001                       |            |            |            |--- ...                       |            |            |            |--- s001Count                       |            |            |                       |            |            |--- s002 ---\                       |            |            |            |                       |            |            |    ...     |                       |            |                       |            |--- forgeries ---\                       |            |                 |                       |            |                 |--- s001 ---\                       |            |                 |            |                       |            |                 |            |--- s001f000                       |            |                 |            |--- s001f001                       |            |                 |            |--- ...                       |            |                 |            |--- s001fCount                       |            |                 |                       |            |                 |--- s002 ---\                       |            |                 |            |                       |            |                 |    ...     |                       |              |--- set2 ---\                       |            |                       |            |--- listset2                       |            |                       |            |--- data ---\                       |            |            |                       |            |            |--- s001 ---\                       |            |            |            |                       |            |            |            |--- s001000                       |            |            |            |--- s001001                       |            |            |            |--- ...                       |            |            |            |--- s001Count                       |            |            |                       |            |            |--- s002 ---\                       |            |            |            |                       |            |            |    ...     |                       |            |                       |            |--- forgeries ---\                       |            |                 |                       |            |                 |--- s001 ---\                       |            |                 |            |                       |            |                 |            |--- s001f000                       |            |                 |            |--- s001f001                       |            |                 |            |--- ...                       |            |                 |            |--- s001fCount                       |            |                 |                       |            |                 |--- s002 ---\                       |            |                 |            |                       |            |                 |    ...     |The listset1 and listset2 files detail the subjects that are includedin the set. Each subject has a corresponding directory for his/hersignatures and the corresponding forgeries. These directories arecalled s0xx where xx is the subject number. Inside the correspondingsubject directory, there is file called s0xxCount that has the numberof signatures that are stored in the directory. The signatures arenamed s0xx0yy where yy is the signature number.  For the case of theforgeries the naming convention is s0xxf0yy.  The signatures are savedin ASCII format. The first row of the file indicates the number ofsamples of the signature. The second row and on is composed of twonumbers, the coordinates x and y of the corresponding sample.You could use the provided matlab files view_subject.m,view_signature.m, and view_forgery.m to obtain a plot of thecorresponding signatures. These functions are very simple andrudimentary, but are enough to show the data.Comments:--------* set1 and set2 were captured with a similar application one year apart from  each other.* there is no subject repetition between the two sets.* both sets were used in the experimental results presented in \cite{munichP03}  however, the signatures of set1 have been renamed for this distribution  (see the file set1-mapping.txt for more information).* Most of the signatures and forgeries from set2 have a image taken when  the subject had finished writing his/her signature.If you find this data useful for your work, please drop me a note tomariomu@vision.caltech.edu and I will have you posted regardingchanges and improvements of the data sets.