<?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>1405-5546</journal-id>
<journal-title><![CDATA[Computación y Sistemas]]></journal-title>
<abbrev-journal-title><![CDATA[Comp. y Sist.]]></abbrev-journal-title>
<issn>1405-5546</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Investigación en Computación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-55462020000100201</article-id>
<article-id pub-id-type="doi">10.13053/cys-24-1-3045</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Espacio no perceptual de color esférico RTP: Aplicación en discriminación de imágenes generadas por computador]]></article-title>
<article-title xml:lang="en"><![CDATA[Spherical Non-Perceptual Color Space RTP: Identifying Computer Graphics]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Paz]]></surname>
<given-names><![CDATA[Jean Pierre]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loaiza Correa]]></surname>
<given-names><![CDATA[Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Valle Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>24</volume>
<numero>1</numero>
<fpage>201</fpage>
<lpage>211</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462020000100201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462020000100201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462020000100201&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este artículo presenta un espacio de color no perceptual basado en coordenadas esféricas llamado RTP por las siglas de Rho, Theta y Phi. De manera similar al conocido espacio HSV, RTP desacopla la información de cromaticidad (&#952;,&#966;) e intensidad (&#961;), pero representa los tonos rojizos de manera continua. Para evaluar las potencialidades del espacio propuesto, se abordó el problema de discriminación entre imágenes reales y generadas por computador, donde se obtuvo una precisión promedio en la identificación de 84.55%. El desempeño alcanzado supera los obtenidos con los espacios RGB, HSI y HSV, mostrando diferencias estadísticamente significativas. El espacio RTP puede usarse en otras aplicaciones donde el desacople de los componentes cromáticos juegan un papel principal en la discriminación de los objetos contenidos en las imágenes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper presents a non-perceptual color space based on spherical coordinates that is called RTP after Rho, Theta and Phi. Like HSV space color, RTP decouples the information associated to chrominance (&#952;,&#966;) and intensity (&#961;), however RTP keeps together the reddish colors. To show the potentials of our color space, we approach the problem of identifying either an image is a computer graphic or a photorealistic image. We got an average accuracy of 84.55% detecting computer graphics and outperforming the ones from RGB, HSV and HSI color spaces with statistically significative differences on classification average accuracy. RTP color space can be used in other issues where chrominance decoupling improves the discriminant capability.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Espacio de color]]></kwd>
<kwd lng="es"><![CDATA[gráficos computacionales]]></kwd>
<kwd lng="es"><![CDATA[procesamiento de imágenes]]></kwd>
<kwd lng="en"><![CDATA[Color space]]></kwd>
<kwd lng="en"><![CDATA[computer graphics]]></kwd>
<kwd lng="en"><![CDATA[image processing]]></kwd>
</kwd-group>
</article-meta>
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