<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-9044</journal-id>
<journal-title><![CDATA[Polibits]]></journal-title>
<abbrev-journal-title><![CDATA[Polibits]]></abbrev-journal-title>
<issn>1870-9044</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Innovación y Desarrollo Tecnológico en Cómputo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-90442011000200005</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A Dynamic Model for Identification of Emotional Expressions]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonçalves]]></surname>
<given-names><![CDATA[Rafael A.M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cueva]]></surname>
<given-names><![CDATA[Diego R.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira-Barretto]]></surname>
<given-names><![CDATA[Marcos R.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cozman]]></surname>
<given-names><![CDATA[Fabio G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,University of São Paulo Decision Making Lab of the Mechatronics Department ]]></institution>
<addr-line><![CDATA[São Paulo ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<numero>44</numero>
<fpage>25</fpage>
<lpage>29</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-90442011000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-90442011000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-90442011000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This paper discusses the dynamics of emotion recognition on faces, layering basic capabilities of an emotion sensor. It also introduces a model for the recognition of the overall conveyed emotion during a human-machine interaction, based on the emotional trajectory over an emotional surface.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Emotion dynamics]]></kwd>
<kwd lng="en"><![CDATA[emotion recognition]]></kwd>
<kwd lng="en"><![CDATA[emotional surface]]></kwd>
<kwd lng="en"><![CDATA[Kalman filtering]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>A Dynamic Model for Identification of Emotional Expressions</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Rafael A.M. Gon&ccedil;alves, Diego R. Cueva, Marcos R. Pereira&#150;Barretto, and Fabio G. Cozman</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Decision Making Lab of the Mechatronics Department, University of S&atilde;o Paulo, S&atilde;o Paulo, Brasil. Electronic correspondence regarding this article should be sent to Prof. Dr. Marcos R. Pereira&#150;Barretto to</i> <a href="mailto:mpbarre@usp.br">mpbarre@usp.br</a>.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Manuscript received June 10, 2011.    <br>   Manuscript accepted for publication September 14, 2011.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">This paper discusses the dynamics of emotion recognition on faces, layering basic capabilities of an emotion sensor. It also introduces a model for the recognition of the overall conveyed emotion during a human&#150;machine interaction, based on the emotional trajectory over an emotional surface.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Key words:</b> Emotion dynamics, emotion recognition, emotional surface, Kalman filtering.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/poli/n44/n44a5.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>NOTA</b></font></p>     <p align="justify"><font face="verdana" size="2">This work is supported by the Conselho Nacional de Desenvolvimento Cient&iacute;fico e Tecnol&oacute;gico (CNPq), FAPESP, under research project 2008/03995&#150;5 and the University of S&atilde;o Paulo.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>REFERENCES</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;1&#93; R.W. 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