<div dir="ltr">This is all very confusing to me. In the FileWriter example, the caller <b>already knows</b> what the <a href="http://www.itk.org/Doxygen/html/classitk_1_1ImageIOBase.html#a8dc783055a0af6f0a5a26cb080feb178" target="_blank" style="color:rgb(70,101,162);font-weight:bold;font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px">IOComponentType</a> and what the <a href="http://www.itk.org/Doxygen/html/classitk_1_1ImageIOBase.html#abd189f096c2a1b3ea559bc3e4849f658" target="_blank" style="color:rgb(70,101,162);font-weight:bold;font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px">IOPixelType</a><span style="color:rgb(0,0,0);font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px;background-color:rgb(249,250,252)"> of the itk::Image is (it is hard-coded; not retrieved from the itk::Image). The same holds for the reader: it gets that information from the file.</span><div><span style="color:rgb(0,0,0);font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px;background-color:rgb(249,250,252)">I want to make a general function that takes <b>ANY</b> itk::Image as input, and converts it to an AVS datasructure (which supports all of them). So I need to get the information from itk::Image.</span></div><div><span style="color:rgb(0,0,0);font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px;background-color:rgb(249,250,252)">Is there a way to get it from itk::Image? </span><span style="color:rgb(0,0,0);font-family:'Lucida Grande',Verdana,Geneva,Arial,sans-serif;font-size:12px;line-height:22px;background-color:rgb(249,250,252)">Or is it true that an itk::Image does not know what it actually is/represents?</span><div class="" style="font-size:12.8px"></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 15, 2016 at 7:07 PM, Dženan Zukić <span dir="ltr"><<a href="mailto:dzenanz@gmail.com" target="_blank">dzenanz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">If I remember correctly, using <a href="http://www.vtk.org/Wiki/ITK/Examples/IO/ReadUnknownImageType" target="_blank">this</a> approach you can also get number of components with something like:</div><div class="gmail_default"><font face="monospace, monospace">imageIO->GetNumberOfComponents();</font><br></div><div class="gmail_default"><font face="verdana, sans-serif">You can take a look at class <a href="http://www.itk.org/Doxygen/html/classitk_1_1ImageIOBase.html" target="_blank">documentation</a> for more details.</font></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 15, 2016 at 1:09 PM, Lambert Zijp <span dir="ltr"><<a href="mailto:ljzijp@gmail.com" target="_blank">ljzijp@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><font face="verdana, sans-serif">I'm still not sure how to handle vector images. </font><span style="font-family:verdana,sans-serif">Dženan gave an example of an RGB image. That would be a 3-vector unsigned char pixeltype.</span><div><span style="font-family:verdana,sans-serif">Would I have to write out in those <i>'if </i></span><span style="font-family:verdana,sans-serif"><i>(</i></span><span style="font-family:verdana,sans-serif"><i>typeid(ValueType) == ???)'</i> statements all permutations of the number of vectors and the type? Or is there a way to separate the number of vectors and the pixeltype?</span></div><div><span style="font-family:verdana,sans-serif">How are vector images stored in memory in ITK. In an RGB image for example, are the pixels consecutive triplets, or is the image stored as three consecutive color planes?</span></div><div><span style="font-family:verdana,sans-serif">I'm particular interested in 3D displacement vector fields, that are the result of deformable registration.</span></div><div><span style="font-family:verdana,sans-serif"><br></span></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 15, 2016 at 5:22 PM, Bill Lorensen <span dir="ltr"><<a href="mailto:bill.lorensen@gmail.com" target="_blank">bill.lorensen@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">This example may help<br>
<a href="http://www.vtk.org/Wiki/ITK/Examples/IO/ReadUnknownImageType" target="_blank">http://www.vtk.org/Wiki/ITK/Examples/IO/ReadUnknownImageType</a><br>
</p><div><div>
<div class="gmail_quote">On Mar 15, 2016 8:44 AM, "Dženan Zukić" <<a href="mailto:dzenanz@gmail.com" target="_blank">dzenanz@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Of course it complained, switch statement is for integral types (if I remember correctly).</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Regards</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 15, 2016 at 11:39 AM, Lambert Zijp <span dir="ltr"><<a href="mailto:ljzijp@gmail.com" target="_blank">ljzijp@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi <span style="font-family:verdana,sans-serif">Dženan,</span><div><span style="font-family:verdana,sans-serif"><br></span></div><div><span style="font-family:verdana,sans-serif">Thank you very much!</span></div><div><span style="font-family:verdana,sans-serif">Visual Studio 9 does not recognize </span><span style="font-size:12.8px">decltype(), but </span><span style="font-family:verdana,sans-serif">typeid() worked fine. At least, when you make separate if statements, like you did in your example. When tried to use it in a switch statement, the compiler complained.</span></div><div><span style="font-family:verdana,sans-serif"><br></span></div><div><span style="font-family:verdana,sans-serif">Greetings,</span></div><div><span style="font-family:verdana,sans-serif">Lambert</span></div><div><span style="font-family:verdana,sans-serif"><br></span></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Mar 15, 2016 at 2:47 PM, Dženan Zukić <span dir="ltr"><<a href="mailto:dzenanz@gmail.com" target="_blank">dzenanz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Hi Lambert,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">the classic way is using a bunch of if-else's.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div>if (decltype(ValueType)==decltype(int))<br>{<br>//int specific processing<br>}<br>else if (decltype(ValueType)==decltype(itk::RGB<char>))<br>{<br>//RGB<char> specific processing<br>}<div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">else if ...</div><div><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">If you can't use C++11's decltype then use typeid from <typeinfo> header.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Regards,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Dženan</div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Tue, Mar 15, 2016 at 5:48 AM, Lambert Zijp <span dir="ltr"><<a href="mailto:ljzijp@gmail.com" target="_blank">ljzijp@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">I want to write a function that converts an arbitrary ITK image to another format (AVS in my case).<div>It has been suggested that following functionprototype could de the job:</div><div><div>template<typename ValueType,unsigned int Dimension></div><div>int ItkToAvs(AVSfield** ppAvs, typename itk::Image<ValueType,Dimension>::Pointer pItkImage);</div></div><div><br></div><div>Now I want to know whether ValueType equals unsigned char or short or int etc. Also whether the pixels are single numbers or vectors. How does one do that?</div><div><br></div><div>Greetings,</div><div>Lambert</div><div><br></div><div><br></div></div>
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