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Hi Dan<br>
<br>
Due the explanation you gave me I´ve understood that with Cuberille
filter I can only compare qualitatively<span
class="Apple-style-span" style="border-collapse: separate; color:
rgb(0, 0, 0); font-family: 'Times New Roman'; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
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font-size: medium;"><span class="Apple-style-span"
style="font-family: arial,sans-serif; font-size: 24px;"> </span></span>the
images, isn´t it?<br>
Now I´ve already changed the other parameters to compare the results
of the images. If you want to see some of the results I can post
some of the images I´ve had. In total I´ve 60 images to analyse and
comment.<br>
The values that you chose to the other parameters
(SurfaceDistanceThreshold, StepLength, StepLengthRelax,
MaximumNumberOfSteps) are the best values for the images with the
extension .mha, or are them good for other kind of images? And why
have you choose them?<br>
<br>
Thanks for the links and the explanation.<br>
<br>
Em 07-06-2011 10:46, Dan Mueller escreveu:
<blockquote
cite="mid:BANLkTinQvVpuh+mO4jaN2iUphfK4Vb5ziw@mail.gmail.com"
type="cite">
<pre wrap="">Hi Mário,
(This time cc'd to the insight-users mailing list)
</pre>
<blockquote type="cite">
<pre wrap="">I´m trying to understand the diference of using GenerateTriangleFaces or
ProjectVerticesToIsoSurface.
</pre>
</blockquote>
<pre wrap="">
These parameters are described in the Insight journal article:
<a class="moz-txt-link-freetext" href="http://www.insight-journal.org/download/viewpdf/740/3">http://www.insight-journal.org/download/viewpdf/740/3</a>
"GenerateTriangleFaces specifies whether triangle or quadrilateral
faces should be generated. The default is to generate triangle faces."
GenerateTriangleFaces=true means that the algorithm generates
triangles, GenerateTriangleFaces=false means the algorithm generates
quadrilaterals (e.g. rectangles).
"ProjectVerticesToIsoSurface specifies whether the vertices should be
projected onto the iso-surface. If the projection is disabled, the
resultant mesh exhibits the traditional blocky features. Projection
takes roughly half of the algorithm time. The default is to project
the vertices."
ProjectVerticesToIsoSurface=true means that the resultant mesh is
smooth (vertices are projected onto the surface).
ProjectVerticesToIsoSurface=false means that the resultant mesh is
blocky (vertices are not projected and remain block-like).
</pre>
<blockquote type="cite">
<pre wrap="">Can you send me the articles you mention in the references of the article
"Cuberille implicit surface polygonization for itk"?
</pre>
</blockquote>
<pre wrap="">
Unfortunately the referenced publications did not follow the
principles of open science, and are behind a pay wall. The best I can
do is send you the digital object identifier links. If you are
studying, your university typically pays exorbitant fees to access
these publications. Ask your librarian.
<a class="moz-txt-link-freetext" href="http://dx.doi.org/10.1016/0734-189X(89)90132-1">http://dx.doi.org/10.1016/0734-189X(89)90132-1</a>
<a class="moz-txt-link-freetext" href="http://dx.doi.org/10.1016/0146-664X(79)90079-0">http://dx.doi.org/10.1016/0146-664X(79)90079-0</a>
HTH
Cheers, Dan
</pre>
<blockquote type="cite">
<pre wrap="">2011/6/6 Mário Costa <a class="moz-txt-link-rfc2396E" href="mailto:mario.costa.13@gmail.com"><mario.costa.13@gmail.com></a>:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Dan
I´m studying the algorithm Cuberille in school, and I have to make a report
of it.
I´ve read your article, and I´m using your code to read the volume of vtk
images and get the respective polygon meshes.
I needed to change all the parameters of the algorithm in order to discuss
which values were the best for certain kind of images.
Now I don´t know what to compare from the original image and the respective
mesh.
I´m trying to understand the diference of using GenerateTriangleFaces or
ProjectVerticesToIsoSurface.
Can you send me the articles you mention in the references of the article
"Cuberille implicit surface polygonization for itk"?
Em 05-06-2011 14:22, Dan Mueller escreveu:
</pre>
<blockquote type="cite">
<pre wrap="">
Hi Mario,
Are you referring to the Cuberille implicit surface polygonization
algorithm?
<a class="moz-txt-link-freetext" href="http://www.insight-journal.org/browse/publication/740">http://www.insight-journal.org/browse/publication/740</a>
If so, this algorithm takes a 3-d image (volume) and converts it to a
polygon mesh.
Please post your source code, input images, and output screen captures
to the list so we can provide more detailed help.
(You may have to post these files/images to an online file repository,
as the mailing list only supports text and very small images).
Cheers, Dan
2011/6/1 Mário Costa<a class="moz-txt-link-rfc2396E" href="mailto:mario.costa.13@gmail.com"><mario.costa.13@gmail.com></a>:
</pre>
<blockquote type="cite">
<pre wrap="">
Hello
I´m studying the Cuberille algorithm. I've implemented it and tried to
run
it with several images but I can´t understand all the results i´ve had.
Can someone tell me what are the main applications of this algorithm?
Thanks
Mario Costa
</pre>
</blockquote>
</blockquote>
<pre wrap="">
</pre>
</blockquote>
<pre wrap="">
</pre>
</blockquote>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Cumprimentos
Mário Costa</pre>
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