<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532022000100043</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v89n220.98902</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Optimization of urban land-cover classification workflow based on geographic-object analysis using very-high-resolution imagery]]></article-title>
<article-title xml:lang="es"><![CDATA[Optimización de un flujo de trabajo para clasificación de coberturas urbanas basado en análisis de objetos geográficos usando imágenes de alta resolución]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Castañeda]]></surname>
<given-names><![CDATA[Deybi Libardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Sánchez]]></surname>
<given-names><![CDATA[Camilo Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lizarazo]]></surname>
<given-names><![CDATA[Ivan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Technische Universiteit Delft  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Netherlands</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias Grupo de Investigación Análisis Espacial del Territorio y del Cambio Global (AET-CG)]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>89</volume>
<numero>220</numero>
<fpage>43</fpage>
<lpage>53</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532022000100043&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532022000100043&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532022000100043&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A recurring problem in Geographic-Object Based Image Analysis (GEOBIA) is the need to tune each one of the three phases involved in the process, segmentation, feature selection, and classification. This paper presents the optimization of a GEOBIA-based urban land-cover classification workflow using very-high-resolution imagery. Two classification workflows are evaluated: (i) a non-optimized workflow, and (ii) an optimized workflow. In the segmentation and classification phases, both workflows used the multi-resolution segmentation algorithm and the random forest classification algorithm. In addition, important spectral, geomorphometric, and textural features are identified as significant predictor variables for the final classification. It is shown that the classification accuracy of every land-cover category increases with optimization, resulting in an overall accuracy increase of 9.34% compared with no optimization. The results show the substantial impact that optimization has on final classification output and suggest the importance of its adoption as a good practice in GEOBIA-based land-cover classification.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Un problema recurrente en el análisis de imágenes orientado a objetos geográficos (GEOBIA), es la necesidad de ajustar las tres fases involucradas en el proceso, es decir, segmentación, selección de atributos y clasificación. Este artículo presenta la optimización del flujo de trabajo para clasificación de coberturas urbanas basado en GEOBIA empleando imágenes de alta resolución. Se evalúan dos flujos de trabajo para clasificación: (i) no optimizado; y (ii) optimizado. Ambos utilizaron los algoritmos multi-resolution segmentation y random forest en las fases de segmentación y clasificación respectivamente. Además, se identifican características espectrales, geomorfométricas y texturales, como variables predictoras significativas para la clasificación final. Se muestra que la exactitud de la clasificación en cada cobertura aumenta con la optimización, lo que resulta en un aumento de la exactitud global de 9.34% respecto a la clasificación no optimizada. Los resultados muestran el impacto que tiene la optimización en el resultado final de la clasificación y sugieren la importancia de adoptarla como buena práctica en la clasificación de coberturas basada en GEOBIA.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[geographic-object based image analysis]]></kwd>
<kwd lng="en"><![CDATA[multiresolution segmentation]]></kwd>
<kwd lng="en"><![CDATA[random forest]]></kwd>
<kwd lng="en"><![CDATA[urban land-cover classification]]></kwd>
<kwd lng="en"><![CDATA[optimization]]></kwd>
<kwd lng="es"><![CDATA[análisis orientado a objetos]]></kwd>
<kwd lng="es"><![CDATA[segmentación multirresolución]]></kwd>
<kwd lng="es"><![CDATA[bosques aleatorios]]></kwd>
<kwd lng="es"><![CDATA[clasificación de coberturas urbanas]]></kwd>
<kwd lng="es"><![CDATA[optimización]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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