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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks Sergio!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I would like to generate separated x and y component as are given in the calculation of the gradient in Matlab. So I would try the second option, but I don’t fully understand “to transverse the convariance vector image”, can anyone give a example with pseudocode or something, please?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks, merci!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Antonio<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Sergio Vera [mailto:sergio.vera@alma3d.com] <br><b>Enviado el:</b> jueves, 22 de septiembre de 2011 10:37<br><b>Para:</b> Antonio Gómez Barquero; itk Users<br><b>Asunto:</b> Re: [Insight-users] x&y component of the gradient of an image<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><h3><span class=apple-style-span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";background:white;font-weight:normal'>Hello!</span></span><span style='font-family:"Arial","sans-serif";background:white'><o:p></o:p></span></h3><h3><span class=apple-style-span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";background:white;font-weight:normal'>With itk::GradientImageFilter you obtain a output image consisting of a covariant vector image with the x and y components...</span></span><span style='font-family:"Arial","sans-serif";background:white'><o:p></o:p></span></h3><p class=MsoNormal><span class=apple-style-span><span style='font-family:"Arial","sans-serif";background:white'>If you want to generate separated x and y components in two different images you can use iterators to traverse the covariant vector image and just copy the x and y values into different images</span><o:p></o:p></span></p><h3><span class=apple-style-span><span style='font-size:9.0pt;background:white;font-weight:normal'>regards</span></span><span style='font-size:9.0pt'><o:p></o:p></span></h3><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2011/9/22 Antonio Gómez Barquero <<a href="mailto:agb1@alu.upct.es">agb1@alu.upct.es</a>><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Hello!</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none'><span lang=EN-US>I would like to calculate the <b>x</b> and <b>y</b> component of the gradient of a 2D image. As in MATLAB is calculated with </span><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>[dT2,dT1] = gradient(T);</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-indent:35.4pt'><span lang=EN-US>ReaderType::Pointer T_g <span style='color:#00B050'>// image </span></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> FilterType::Pointer gradientFilter = FilterType::New();</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> gradientFilter->SetInput( T_g->GetOutput());</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> gradientFilter->Update();</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>With this sentence, I get the result, but I want to have the x-component and the y-component</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-indent:35.4pt'><span lang=EN-US>gradientFilter->GetOutput()</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Is there any method to extract it? I am looking for it but I have no positive result!</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Thanks so much</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Antonio</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=ES-TRAD style='font-size:8.0pt'>Ingeniero de Telecomunicaciones -Becario Investigador asociado a Actividades de I+D+I </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=ES-TRAD style='font-size:8.0pt'>GTTS ( Grupo de Tratamiento y Teoría de la Señal)[ </span><span style='font-size:8.0pt'><a href="http://gtts.upct.es/" target="_blank">http://gtts.upct.es/</a></span><span lang=ES-TRAD style='font-size:8.0pt'>]</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=ES-TRAD style='font-size:8.0pt'>UPCT (Universidad Politécnica de Cartagena)[ </span><span style='font-size:8.0pt'><a href="http://www.upct.es/" target="_blank">http://www.upct.es/</a>]</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_____________________________________<br>Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br><br>Visit other Kitware open-source projects at<br><a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br><br>Kitware offers ITK Training Courses, for more information visit:<br><a href="http://www.kitware.com/products/protraining.html" target="_blank">http://www.kitware.com/products/protraining.html</a><br><br>Please keep messages on-topic and check the ITK FAQ at:<br><a href="http://www.itk.org/Wiki/ITK_FAQ" target="_blank">http://www.itk.org/Wiki/ITK_FAQ</a><br><br>Follow this link to subscribe/unsubscribe:<br><a href="http://www.itk.org/mailman/listinfo/insight-users" target="_blank">http://www.itk.org/mailman/listinfo/insight-users</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <br>Sergio Vera<br><br> Alma IT Systems<br> C/ Vilana, 4B, 4º 1ª<br> 08022 Barcelona<br> T. (+34) 932 380 592<br> <a href="http://www.alma3d.com">www.alma3d.com</a><o:p></o:p></p></div></body></html>