<?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>S1405-55462009000400005</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Stereoscopic Visualization across two Parallel Walls]]></article-title>
<article-title xml:lang="es"><![CDATA[Visualización estereoscópica a través de dos paredes paralelas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora Lumbreras]]></surname>
<given-names><![CDATA[Marva Angélica]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilera Ramirez]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de las Americas Puebla Centro de Investigación en Tecnologías de Información y Automatización ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2009</year>
</pub-date>
<volume>13</volume>
<numero>2</numero>
<fpage>187</fpage>
<lpage>194</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462009000400005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462009000400005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462009000400005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This paper presents the building of a stereoscope, which is formed with two parallel walls. The building of this stereoscope is based on the Wheatstone-type stereoscope. Due to the incorporation of some characteristics, we named this stereoscope "Wheatstone-Mora" environment. We propose to build stereoscopic environments of different sizes, in which, each wall can be built with projection screens, TV screens, and/or computer-controller monitors connected via network, and display a stereoscopic scene on them. We incorporate means performing unrestricted navigation around the 3D scene. This navigation can be controlled through several different input devices: a keyboard, a tracker, and a remote control. Furthermore, the user can move within the physical environment as long as he/she is always at the same distance from both walls. Finally, we evaluated, analyzed and showed the results of our environment.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Este artículo presenta la construcción de un estereoscopio, el cual está formado con dos paredes paralelas. La construcción de este estereoscopio está basado en el estereoscopio tipo-Wheatstone. Debido a la incorporación de algunas características, lo nombramos ambiente Wheatstone -Mora. Proponemos construir ambientes estereoscópicos de diferentes tamaños, en los cuales, cada pared será construida con pantallas de proyección, televisiones, y/o monitores controlados por computadora conectados a una red, y visualizar una escena estereoscópica sobre estos. Incorporamos medios de navegación sin restricciones a través de la escena 3D. Esta navegación puede ser controlada a través de varios dispositivos de entrada: un teclado, un tracker y un control remoto. Además, el usuario puede moverse en el ambiente físico, mientras el/ella mantenga la misma distancia en ambas paredes. Finalmente, evaluamos, analizamos y mostramos los resultados de nuestro ambiente.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Stereoscope]]></kwd>
<kwd lng="en"><![CDATA[Virtual Environment]]></kwd>
<kwd lng="en"><![CDATA[stereographic]]></kwd>
<kwd lng="es"><![CDATA[Estereoscopio]]></kwd>
<kwd lng="es"><![CDATA[Ambiente Virtual]]></kwd>
<kwd lng="es"><![CDATA[Gráficas estéreo]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culos</font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Stereoscopic Visualization across two Parallel Walls</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="3"><b><i>Visualizaci&oacute;n estereosc&oacute;pica a trav&eacute;s de dos paredes paralelas</i></b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Marva Ang&eacute;lica Mora Lumbreras and Antonio Aguilera Ramirez</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Centro de Investigaci&oacute;n en Tecnolog&iacute;as de Informaci&oacute;n y Automatizaci&oacute;n. Universidad de las Americas Puebla, Sta. Catarina M&aacute;rtir s/n</i> <a href="mailto:marva.morals@udlap.mx">marva.morals@udlap.mx</a>,   <a href="mailto:antonio.aguilera@udlap.mx">antonio.aguilera@udlap.mx</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Article received on December 06, 2007    <br>   Accepted on July 04, 2008</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>     <p align="justify"><font face="verdana" size="2">This paper presents the building of a stereoscope, which is formed with two parallel walls. The building of this stereoscope is based on the Wheatstone&#150;type stereoscope. Due to the incorporation of some characteristics, we named this stereoscope "Wheatstone&#150;Mora" environment. We propose to build stereoscopic environments of different sizes, in which, each wall can be built with projection screens, TV screens, and/or computer&#150;controller monitors connected via network, and display a stereoscopic scene on them. We incorporate means performing unrestricted navigation around the 3D scene. This navigation can be controlled through several different input devices: a keyboard, a tracker, and a remote control. Furthermore, the user can move within the physical environment as long as he/she is always at the same distance from both walls. Finally, we evaluated, analyzed and showed the results of our environment.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Stereoscope, Virtual Environment, stereographic.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Este art&iacute;culo presenta la construcci&oacute;n de un estereoscopio, el cual est&aacute; formado con dos paredes paralelas. La construcci&oacute;n de este estereoscopio est&aacute; basado en el estereoscopio tipo&#150;Wheatstone. Debido a la incorporaci&oacute;n de algunas caracter&iacute;sticas, lo nombramos ambiente Wheatstone &#150;Mora. Proponemos construir ambientes estereosc&oacute;picos de diferentes tama&ntilde;os, en los cuales, cada pared ser&aacute; construida con pantallas de proyecci&oacute;n, televisiones, y/o monitores controlados por computadora conectados a una red, y visualizar una escena estereosc&oacute;pica sobre estos. Incorporamos medios de navegaci&oacute;n sin restricciones a trav&eacute;s de la escena 3D. Esta navegaci&oacute;n puede ser controlada a trav&eacute;s de varios dispositivos de entrada: un teclado, un tracker y un control remoto. Adem&aacute;s, el usuario puede moverse en el ambiente f&iacute;sico, mientras el/ella mantenga la misma distancia en ambas paredes. Finalmente, evaluamos, analizamos y mostramos los resultados de nuestro ambiente.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>Estereoscopio, Ambiente Virtual, Gr&aacute;ficas est&eacute;reo.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/cys/v13n2/v13n2a5.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>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. <b>Aguilera, Antonio. </b>Sistemas de Multidisplay: T&eacute;cnicas y Aplicaciones (Multidisplay Systems: Techniques and Applications, written in Spanish), Master Thesis, IunivertecH (I.U.T.H.), Puebla, M&eacute;xico, 2008.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058847&pid=S1405-5546200900040000500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2. <b>Aguilera Ramirez Antonio, Mora Lumbreras Marva Ang&eacute;lica, </b>Obtaining Stereographies using a Two&#150;Monitor System and a Set of Mirrors. Proceedings of the 18th International Conference on Electronics, Communications and Computers (CONIELECOMP 2008), Pages: 177&#150;181, ISBN: 978&#150;0&#150;7695&#150;3120&#150;5, 2008.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058848&pid=S1405-5546200900040000500002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">3. <b>Bourke, Paul, </b>2005 <a href="http://astronomy.swinburne.edu.au/" target="_blank">http://astronomy.swin.edu.au/pbourke/</a></font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058849&pid=S1405-5546200900040000500003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">4. <b>Mora Lumbreras Marva Ang&eacute;lica, Aguilera Ram&iacute;rez Antonio, </b>Construyendo un estereoscopio digital tipo caja, Revista CiBIyT, No. 9, Pages: 19&#150;21, ISSN: 1870056X, Agosto 2008.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058850&pid=S1405-5546200900040000500004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">5. <b>Parente, J. I. </b>A estereoscopia no Brasil (Stereoscopics in Brasil, written in Portuguese). ISBN: 85867963IX, LCCN: 2001286397, Sextante Artes. 1999.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058851&pid=S1405-5546200900040000500005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">6. <b>Vali, N. A. </b>Stereoscopy (The Focal library), ASIN: B0007IZQVI, Focal P. 1966.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058852&pid=S1405-5546200900040000500006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">7. <b>Ware Colin, Mitchell Peter, Visualizing graphs in three dimensions, ACM Transactions on Applied Perception (TAP), Volume 5, Article 2, ISSN: 1544&#150;3558, January 2008.</b></font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058853&pid=S1405-5546200900040000500007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">8. <b>Ware Colin, Mitchell Peter, </b>Reevaluating stereo and motion cues for visualizing graphs in three dimensions, Applied Perception in Graphics and Visualization; Vol. 95, Proceedings of the 2nd symposium on Applied perception in graphics and visualization, ACM, Pages: 51&#150;58, ISBN: 1&#150;59593&#150;139&#150;2, August 2005.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058854&pid=S1405-5546200900040000500008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">9. <b>Wheatstone, Charles. </b>On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision (continued), Philosophical Transactions of the Royal Society of London, Vol. 142, Pages: 1&#150;17, 1852.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058855&pid=S1405-5546200900040000500009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">10. <b>Wheatstone, Charles. </b>On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision. Philosophical Transactions of the Royal Society of London, Vol. 128, Pages: 371&#150;394, 1838.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=2058856&pid=S1405-5546200900040000500010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguilera]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
</person-group>
<source><![CDATA[Sistemas de Multidisplay: Técnicas y Aplicaciones]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aguilera Ramirez]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<name>
<surname><![CDATA[Mora Lumbreras]]></surname>
<given-names><![CDATA[Marva Angélica]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[Obtaining Stereographies using a Two-Monitor System and a Set of Mirrors]]></article-title>
<source><![CDATA[Proceedings of the 18th International Conference on Electronics, Communications and Computers]]></source>
<year>2008</year>
<page-range>177-181</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bourke]]></surname>
<given-names><![CDATA[Paul]]></given-names>
</name>
</person-group>
<source><![CDATA[]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mora Lumbreras]]></surname>
<given-names><![CDATA[Marva Angélica]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilera Ramírez]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
</person-group>
<article-title xml:lang="es"><![CDATA[Construyendo un estereoscopio digital tipo caja]]></article-title>
<source><![CDATA[Revista CiBIyT]]></source>
<year>2008</year>
<volume>9</volume>
<page-range>19-21</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parente]]></surname>
<given-names><![CDATA[J. I.]]></given-names>
</name>
</person-group>
<source><![CDATA[A estereoscopia no Brasil]]></source>
<year>1999</year>
<publisher-name><![CDATA[Sextante Artes]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vali]]></surname>
<given-names><![CDATA[N. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Stereoscopy]]></source>
<year>1966</year>
<publisher-name><![CDATA[Focal P.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ware]]></surname>
<given-names><![CDATA[Colin]]></given-names>
</name>
<name>
<surname><![CDATA[Mitchell]]></surname>
<given-names><![CDATA[Peter]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[Visualizing graphs in three dimensions]]></article-title>
<source><![CDATA[ACM Transactions on Applied Perception]]></source>
<year>2008</year>
<volume>5</volume>
</nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ware]]></surname>
<given-names><![CDATA[Colin]]></given-names>
</name>
<name>
<surname><![CDATA[Mitchell]]></surname>
<given-names><![CDATA[Peter]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[Reevaluating stereo and motion cues for visualizing graphs in three dimensions]]></article-title>
<source><![CDATA[Applied Perception in Graphics and Visualization]]></source>
<year>2005</year>
<volume>95</volume>
<conf-name><![CDATA[ Proceedings of the 2nd symposium on Applied perception in graphics and visualization]]></conf-name>
<conf-loc> </conf-loc>
<page-range>51-58</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wheatstone]]></surname>
<given-names><![CDATA[Charles]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision (continued)]]></article-title>
<source><![CDATA[Philosophical Transactions of the Royal Society of London]]></source>
<year>1852</year>
<volume>142</volume>
<page-range>1-17</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wheatstone]]></surname>
<given-names><![CDATA[Charles]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision]]></article-title>
<source><![CDATA[Philosophical Transactions of the Royal Society of London]]></source>
<year>1838</year>
<volume>128</volume>
<page-range>371-394</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
