<div dir="ltr">Sir,<div><br></div><div>sdd and sid is measured from the experiment setup.</div><div>-0.5*spacing*(size-1) logic is applied and effect is same.</div><div><br></div><div>The parameters we know are described below. Please go through it and help me tackle this issue.</div><div><br></div><div><div>Number of projections: 50</div><div><br></div><div>Object size: </div><div>x = 9.924236 mm</div><div>y = 8.3048 mm </div><div>z = 10.505572mm</div><div><br></div><div>Detector panel:</div><div>flat panel : Width: 1032 px., Height: 1012 px.</div><div>Width: 51.6mm Height: 50.6mm</div><div>(Detector pixel pith: 0.05mm)</div><div><br></div><div>Source to Detector Distance = 459.154 mm</div><div>Source to object axis distance = 95.331mm</div><div><br></div><div>Direction of rotation: clock-wise</div><div><br></div><div>Angle</div><div>start: 0 degrees</div><div>increment: 7.2 degrees</div><div>total: 360 degrees</div><div class="gmail_extra"><br></div><div class="gmail_extra">Thanks and Regards.</div><div class="gmail_extra">AMJADN</div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 19, 2016 at 11:32 AM, Simon Rit <span dir="ltr"><<a href="mailto:simon.rit@creatis.insa-lyon.fr" target="_blank">simon.rit@creatis.insa-lyon.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div>
Dear Amjad,<br>
I had a quick look at your dataset. For sure, it's a geometry
problem. Do you have any information regarding the geometry? How did
you obtain sdd / sid?<br>
Currently, I can see that you have set the projections and the
volume origin to 0,0,0 which is not correct, you probably want to
center them for a first test. If you want to center them, the
formula to compute the origin is -0.5*spacing*(size-1) for each
corrdinate.<span class=""><font color="#888888"><br>
Simon</font></span><div><div class="h5"><br>
<br>
<div>On 18/04/2016 08:50, AMJAD N wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">
<div>Hi, The data set is reattached below,. Someone please
look into it and help me please,</div>
<div><br>
</div>
<div><a href="http://filenurse.com/download/bb2827a35cc99a14feee17d2c37cdf76.html" target="_blank">http://filenurse.com/download/bb2827a35cc99a14feee17d2c37cdf76.html</a><br>
</div>
<div><br>
</div>
<div>Thanks in advance</div>
<div>AMJAD </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><br>
Message: 1<br>
Date: Thu, 14 Apr 2016 17:21:12 +0530<br>
From: AMJAD N <<a href="mailto:amjad.n.cet@gmail.com" target="_blank">amjad.n.cet@gmail.com</a>><br>
To: <a href="mailto:rtk-users@public.kitware.com" target="_blank">rtk-users@public.kitware.com</a><br>
Subject: [Rtk-users] Help Regarding FDK reconstruction<br>
Message-ID:<br>
<<a href="mailto:CAHq1iunQyc-ZGRH7o6yrMtiwqnusAPnoKzRKPnxm5bpj_3b0%2BA@mail.gmail.com" target="_blank">CAHq1iunQyc-ZGRH7o6yrMtiwqnusAPnoKzRKPnxm5bpj_3b0+A@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi<br>
<br>
I am new to RTK. and I have been looking into it for the
past two weeks..I<br>
think its an amazing tool..<br>
<br>
My problem is:<br>
<br>
<br>
I have a set of 50 raw CT scan projections of an
industrial fin as shown<br>
(fin.jpg)<br>
I am reading it using ImageSeriesReader with RawimageIO
and been have<br>
trying to reconstruct it using
FDKConeBeamReconstructionFilter. Its been<br>
almost a week that I am trying this,but<br>
I could not reconstruct it correctly<br>
I tried varying my geometry, origin, spacing etc ..but
still no hope<br>
<br>
Can u please look into my program(finRecon.txt) and the
current output I am<br>
getting is output_fin.mha , which is incorrect and
suggest some help<br>
<br>
The link to my dataset:<br>
<br>
<a href="http://expirebox.com/download/b523394ea63c635d10171a69e687993b.html" rel="noreferrer" target="_blank">http://expirebox.com/download/b523394ea63c635d10171a69e687993b.html</a><br>
<br>
raw image dimensions : 1032 *1012<br>
raw image 16 bit<br>
current spacing: 0.05 0.05 0.05<br>
origin: 0 0 0<br>
step angle 7.2 degrees<br>
<br>
<br>
Thanks in advance,<br>
<br>
AMJAD<br>
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