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<p>Hi Yoonho,</p>
<p>my guess would be that FWDType possesses a SetInput method, from
what I understand from the inheritance diagram.</p>
<p>Also make sure to define a geometry using an instance of<font
color="#000912"> rtk.ThreeDCircularProjectionGeometry.</font></p>
<p><font color="#000912">I encourage you to have a look at the class
documentation:
<a class="moz-txt-link-freetext" href="http://www.openrtk.org/Doxygen/classrtk_1_1ForwardProjectionImageFilter.html">http://www.openrtk.org/Doxygen/classrtk_1_1ForwardProjectionImageFilter.html</a></font></p>
<p><font color="#000912">Hope it helps,</font></p>
<p><font color="#000912">best regards,</font></p>
<p><font color="#000912">Vincent<br>
</font></p>
<div class="moz-cite-prefix">On 27.04.20 09:59, 나윤호 wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPZFa=eVN2T9VDOq-29NkNX3ihTrVUf_9sbtry9mkNHRNFBm4Q@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi I'm trying to make an sinogram of shepp logan
phantom.
<div><br>
</div>
<div>But I don't know how to do it using RTK...</div>
<div><br>
</div>
<div>Do I need to define geometry for this?</div>
<div><br>
</div>
<div>Here's what I did so far</div>
<div><br>
</div>
<div><br>
image = itk.imread('C:\\Users\\USER\\Jupyter
Notebook\\ITK-RTK\\shepp_logan_phantom.png', itk.F)<br>
array = itk.array_from_image(image)</div>
<div>expand = np.expand_dims(array, axis=2) # just to make it
into 3 dimension (
ForwardProjectionImageFilter only supports 3D )</div>
<div>expand = itk.image_from_array(expand)<br>
</div>
<div><br>
</div>
<div>ImageType = itk.Image[itk.F,3]<br>
<br>
FWDType = rtk.ForwardProjectionImageFilter[ImageType,
ImageType]<br>
fwd = FWDType.New()<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>For the last line I have tried both</div>
<div><br>
</div>
<div>fwd = FWDType.New(expand) ---> <span class="gmail-ansi-red-intense-fg gmail-ansi-bold" style="font-size:14px;white-space:pre-wrap;box-sizing:border-box;color:rgb(178,43,49);font-weight:bold">AttributeError</span><span style="color:rgb(0,0,0);font-size:14px;white-space:pre-wrap">: No method found to set the input.</span></div>
<div>and</div>
<div>fwd = FWDType.New(Input = expand) ---> <span class="gmail-ansi-red-intense-fg gmail-ansi-bold" style="font-size:14px;white-space:pre-wrap;box-sizing:border-box;color:rgb(178,43,49);font-weight:bold">AttributeError</span><span style="color:rgb(0,0,0);font-size:14px;white-space:pre-wrap">: 'itkObject' object has no attribute 'SetInput'</span></div>
<div><br>
</div>
<div>they both had error like this.</div>
<div><br>
</div>
<div>How can I make an sinogram of shepp logan phantom?</div>
<div><br>
</div>
<div><br>
</div>
<div>Yoonho.</div>
<img class="mailtrack-img" alt="" style="display:flex"
src="https://mailtrack.io/trace/mail/a1b0394e8b3c4d7e7af503ed924b4af3fb4a4a7a.png?u=4672561"
moz-do-not-send="true" width="0" height="0"></div>
<br>
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