<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2005000400009</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Image restoration of blurring due to rectilinear motion: constant velocity and constant acceleration]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Huerta]]></surname>
<given-names><![CDATA[J.S.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodriguez Zurita]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ciencias Físico Matemáticas ]]></institution>
<addr-line><![CDATA[Puebla Pue.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2005</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2005</year>
</pub-date>
<volume>51</volume>
<numero>4</numero>
<fpage>398</fpage>
<lpage>406</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2005000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2005000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2005000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[If a relative motion exists between a given object's image and a recording medium (such as a photographic film) during exposure, the recorded image will be blurred. This effect can be expressed by an impulse response in irradiance function and the respective image restoration is made possible by a post-recording process. General one-dimension motion is considered here. Two cases are discussed: constant velocity motion and constant acceleration motion. Image simulations representing those degradation mechanisms are shown, as well as the corresponding restored images after using the method which is described in this work. This method is based on Dirac delta function propreties. We also show real digital images affected by those motions. It can be experimentally obtained by using an air-rail. The blurred images are processed digitally by spatial filters given by the proposed method. Numerical and experimental results are shown.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Si durante el registro de una imagen (una exposición fotográfica, por ejemplo) existiera un movimiento relativo entre ésta y el medio de registro, la imagen grabada resultará deteriorada (emborronada). Este efecto se expresa por medio de la función de respuesta impulso en irradiancia, y a partir de esta es posible restaurar la imagen mediante procesos posteriores al registro. Aquí se considera movimiento rectilíneo general y se analizan los casos de movimiento uniformemente lineal y movimiento uniformemente acelerado. Se presentan simulaciones de imágenes afectadas por estos movimientos así como su restauración al aplicar el procedimiento sugerido por el análisis descrito, que se basa en propiedades de la función delta de Dirac. También se muestran imágenes reales digitalizadas afectadas por los movimientos mencionados con la ayuda de un riel sin fricción. Estas imágenes se procesan digitalmente implementando filtros espaciales sugeridos por el método propuesto. Se muestran los resultados correspondientes.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Image forming and processing]]></kwd>
<kwd lng="en"><![CDATA[Fourier optics]]></kwd>
<kwd lng="en"><![CDATA[modulation and optical transfer functions]]></kwd>
<kwd lng="es"><![CDATA[Formación y procesamiento de imágenes]]></kwd>
<kwd lng="es"><![CDATA[óptica de Fourier]]></kwd>
<kwd lng="es"><![CDATA[funciones de modulación y transferencia óptica]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Image restoration of blurring due to rectilinear motion: constant velocity and constant acceleration</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>J.S. P&eacute;rez Huerta and G. Rodriguez Zurita</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><i>Facultad de Ciencias F&iacute;sico&#45;Matem&aacute;ticas, Benem&eacute;rita Universidad Aut&oacute;noma de Puebla, Apartado Postal 1152, Puebla Pue., M&eacute;xico, e&#45;mail:</i> <a href="mailto:est091@fcfm.buap.mx">est091@fcfm.buap.mx</a><i>,</i> <a href="mailto:gzurita@fcfm.buap.mx">gzurita@fcfm.buap.mx</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Recibido el 6 de diciembre de 2004.    ]]></body>
<body><![CDATA[<br> 	Aceptado el 24 de mayo de 2005.</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">If a relative motion exists between a given object's image and a recording medium (such as a photographic film) during exposure, the recorded image will be blurred. This effect can be expressed by an impulse response in irradiance function and the respective image restoration is made possible by a post&#45;recording process. General one&#45;dimension motion is considered here. Two cases are discussed: constant velocity motion and constant acceleration motion. Image simulations representing those degradation mechanisms are shown, as well as the corresponding restored images after using the method which is described in this work. This method is based on Dirac delta function propreties. We also show real digital images affected by those motions. It can be experimentally obtained by using an air&#45;rail. The blurred images are processed digitally by spatial filters given by the proposed method. Numerical and experimental results are shown.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Image forming and processing; Fourier optics; modulation and optical transfer functions.</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">Si durante el registro de una imagen (una exposici&oacute;n fotogr&aacute;fica, por ejemplo) existiera un movimiento relativo entre &eacute;sta y el medio de registro, la imagen grabada resultar&aacute; deteriorada (emborronada). Este efecto se expresa por medio de la funci&oacute;n de respuesta impulso en irradiancia, y a partir de esta es posible restaurar la imagen mediante procesos posteriores al registro. Aqu&iacute; se considera movimiento rectil&iacute;neo general y se analizan los casos de movimiento uniformemente lineal y movimiento uniformemente acelerado. Se presentan simulaciones de im&aacute;genes afectadas por estos movimientos as&iacute; como su restauraci&oacute;n al aplicar el procedimiento sugerido por el an&aacute;lisis descrito, que se basa en propiedades de la funci&oacute;n delta de Dirac. Tambi&eacute;n se muestran im&aacute;genes reales digitalizadas afectadas por los movimientos mencionados con la ayuda de un riel sin fricci&oacute;n. Estas im&aacute;genes se procesan digitalmente implementando filtros espaciales sugeridos por el m&eacute;todo propuesto. Se muestran los resultados correspondientes.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Descriptores:</b> Formaci&oacute;n y procesamiento de im&aacute;genes; &oacute;ptica de Fourier; funciones de modulaci&oacute;n y transferencia &oacute;ptica.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS: 42.30.Va; 42.30.Kq; 42.30.Lr</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v51n4/v51n4a9.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>Acknowledgments</b></font></p>  	    <p align="justify"><font face="verdana" size="2">The authors would like to thank Teresita de Jes&uacute;s Angeles No&euml; for her assistance in obtaining experimental pictures. One of the authors (J.S.P.H.) wishes to acknowledge the support given by VIEP&#45;BUAP through project II 158&#45;04/EXE/I.</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. A.W. Lohmann, <i>Opt. Acta</i> <b>6</b> (1959) 319.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8312596&pid=S0035-001X200500040000900001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
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