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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-15">
<meta name="description" content="A Novel Approach for Immediate, Interactive CT Data Visualization and Evaluation using GPU-based Segmentation and Visual Analysis">
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<meta name="keywords" content="CT, GPU, Inclusion Detection, Interactive Visualisation, Visual Analysis, Parallel Coordinates, Segmentation, Volume Rendering">
<title>A Novel Approach for Immediate, Interactive CT Data Visualization and Evaluation using GPU-based Segmentation and Visual Analysis</title>
<link rel="stylesheet" type="text/css" href="styles.css">
<script type="text/javascript" src="video/jwplayer.js"></script>
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<body style="color: rgb(0, 0, 0); font-family: Helvetica,Arial,sans-serif; font:10pt; background-color: rgb(230, 230, 230);">
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<table class="shadow" style="background-color: rgb(255, 255, 255);" align="center" cellpadding="10" cellspacing="50" width="800px" border="0">
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<td style="text-align: center;">
<br>
<h1>A Novel Approach for Immediate, Interactive CT Data Visualization and Evaluation using GPU-based Segmentation and Visual Analysis</h1><br>
<div align="center">
<table style="text-align: center; width: 600px;" border="0" cellpadding="0" cellspacing="0">
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<td style="text-align: center; width:100%;">
<img src="segmentationtool2.png" width="600" alt="Point Data to Model" title="" border="0" />
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</tbody>
</table>
<br><br>
<table style="text-align: center; width: 800px;" border="0" cellpadding="0" cellspacing="0">
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<td style="text-align: center; width:14%;">
<b><a href="https://www.vrvis.at/members/harald-steinlechner/">Harald Steinlechner<small><small><sup> 1</sup></small></small></a></b>
</td>
<td style="text-align: center; width:14%;">
<b>Georg Haaser<small><small><sup> 1</sup></small></small></b>
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<td style="text-align: center; width:14%;">
<b>Bernd Oberdorfer<small><small><sup> 3</sup></small></small></b>
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<td style="text-align: center; width:14%;">
<b>Daniel Habe<small><small><sup> 3</sup></small></small></b>
</td>
<td style="text-align: center; width:14%;">
<b><a href="http://www.vrvis.at/about/team/maierhofer-stefan">Stefan Maierhofer<small><small><sup> 1</sup></small></small></a></b>
</td>
<td style="text-align: center; width:14%;">
<b><a href="http://www.vrvis.at/about/team/schwaerzler-michael">Michael Schwärzler<small><small><sup> 1 4</sup></small></small></a></b>
</td>
<td style="text-align: center; width:14%;">
<b><a href="http://www.vrvis.at/about/team/schwaerzler-michael">Meister Eduard Gröller<small><small><sup> 2</sup></small></small></a></b>
</td>
</tr>
</tbody>
</table>
<p>
<table style="text-align: left; width:500px;" border="0" cellpadding="0" cellspacing="0">
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<td style="text-align: center; vertical-align:top; width:25%;">
<b><a href="http://www.vrvis.at"><small><small><small><sup>1 </sup></small></small>VRVis Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH</small></a></b>
</td>
<td style="text-align: center; vertical-align:top; width:25%;">
<b><a href="http://www.tuwien.ac.at"><small><small><small><sup>2 </sup></small></small>Vienna University of Technology</small></a></b>
</td>
<td style="text-align: center; vertical-align:top; width:25%;">
<b><a href="http://www.ogi.at"><small><small><small><sup>3 </sup></small></small>Austrian Foundry Research Institute</small></a></b>
</td>
<td style="text-align: center; vertical-align:top; width:25%;">
<b><small><small><small><sup>4 </sup></small></small>Delft University of Technology</small></b>
</td>
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</tbody>
</table>
</div>
<br>
<div style="text-align: center;">
<br>
<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Information</h2></td></tr>
<tr>
<td>
<ul>
<li> <i>Proceedings of International Conference on Industrial Computed Tomography (iCT 2019)</i>, abstracts 83-84 and on <a href="https://www.ndt.net/search/docs.php3?showForm=off&id=23672" on NTD>on ntd</a></li>
<li> Publication Type: <i>Conference Paper with Conference Talk</i></li>
<li> Year: <i>2019</i></li>
<li> Keywords: <i>CT, GPU, Inclusion Detection, Interactive Visualisation, Visual Analysis, Parallel Coordinates, Volume Rendering, GPGPU, Segmentation</i></li>
</ul>
</td>
</tr>
</table>
<p></p>
<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Abstract</h2></td></tr>
<tr>
<td>
<div align="justify">
CT data of industrially produced cast metal parts are often afflicted with artefacts due to complex geometries ill-suited for the scanning process. As a result, simple global threshold-based porosity detection algorithms usually fail to deliver meaningful results.
Other adaptive methods can handle image artefacts, but are costly in terms of runtime and computer hardware and often require a-priori knowledge of numerous evaluation parameters. Especially when dealing with high numbers of volume defects, such long preprocessing times make an efficient analysis workflow infeasible, even if the right parameters are found at first try.<br />
Within the scope of our work, a novel approach and workflow for segmentation and visualization of inner volume defects was tested on an stepped cylinder as well as on component parts.
Based on a highly efficient GPU-based implementation of a segmentation algorithm used for porosity detection, we propose an interactive workflow for visualizing and analyzing volume defects interactively. Due to the performance (a few seconds for a complete segmentation on the GPU) and the simplicity (only a single threshold parameter that is adjusted to fit the local neighborhood) of the segmentation algorithm, combined with a user interface with multiple linked views, the task of analysing a volume shifts from entering complicated parameters in an expert tool followed by long processing times to an interactive exploration in multiple dimensions and views without prior knowledge.
</td>
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<p></p>
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<tr><td><h2>Videos</h2></td></tr>
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<tr>
<td>
<iframe width="560" height="315" src="https://www.youtube.com/embed/Zxa6Cit1AlA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</td>
</tr>
<tr>
<td>
<iframe width="560" height="315" src="https://www.youtube.com/embed/PBNh7G78Un8" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</td>
</tr>
<tr>
<td>
<iframe width="560" height="315" src="https://www.youtube.com/embed/s_JpOYMUjUY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</td>
</tr>
</table>
<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Result Images</h2></td></tr>
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<td width=20%><a href='MTREndering.png'><img src="MTREndering.png" width="400" alt="" title="" border="0" /></a></td>
</tr>
<tr>
<td width=20%><a href='segmentationtool.png'><img src="segmentationtool.png" width="400" alt="" title="" border="0" /></a></td>
</tr>
</table>
<p></p>
<!--<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Videos</h2></td></tr>
<tr><td>
<div id="container1">Loading the player ...</div>
<script type="text/javascript">
jwplayer("container1").setup({
'author': 'Murat Arikan + Michael Schwaerzler',
'description': 'O-Snap Main Video',
'title': 'O-Snap Main Video',
'image': 'video/preview1.png',
height: 640,
width: 800,
modes: [
{
type: "flash",
src: "video/player.swf",
config: {
file: "http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-main%20video.mp4.flv"
}
},
{
type: "html5",
config: {
file: "http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-main%20video.mp4"
}
}
]
});
</script>
</td></tr>
<tr><td><br><div align="justify">O-Snap main video, demonstrating the features of our new system.</td></tr>
<tr><td><br>
<div id="container2">Loading the player ...</div>
<script type="text/javascript">
jwplayer("container2").setup({
'author': 'Murat Arikan + Michael Schwaerzler',
'description': 'O-Snap Applications Video',
'title': 'O-Snap Applications Video',
'image': 'video/preview2.png',
height: 640,
width: 800,
modes: [
{
type: "flash",
src: "video/player.swf",
config: {
file: "http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-applications video.mp4.flv"
}
},
{
type: "html5",
config: {
file: "http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-applications%20video.mp4"
}
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});
</script>
</td></tr>
<tr><td><br><div align="justify">O-Snap applications video, demonstrating further use cases.</td></tr>
</table>-->
<p></p>
<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Acknowledgements</h2></td></tr>
<tr>
<td>
<div align="justify">
The authors gratefully acknowledge the Austrian Research Promotion Agency (FFG) funding the project "CT-Real", project no. 6640797.
VRVis is funded by BMVIT, BMDW, Styria, SFG and Vienna Business Agency in the scope of COMET - Competence Centers for Excellent Technologies (854174) which is managed by FFG.
</div>
</td>
</tr>
</table>
<p></p>
<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Downloads</h2></td></tr>
<tr>
<td>
<table width='100%' border='0'>
<tr>
<td>
<a href='preprint.pdf'>Paper (preprint)</a>: [2 MB]
</td>
</tr>
<!--tr>
<td align='center' valign='top' width='180'><a href=''><img src="img/pdf.gif" width="64" height="64" alt="" title="" border="0" /></td><td>
<a href='./notavailable><a>Paper (Low Resolution)</a>: [? MB] (not yet available)</td>
</tr-->
<tr>
<td>
<small>
This is the author's preprint. The definitive version of the paper will be available at
<a href='https://www.ndt.net/search/docs.php3?showForm=off&id=23672' target=_blank>NTD</a>.
</small>
</td>
</tr>
</table>
<table width='100%' border='0'>
<tr>
<td>
<a href='extended-abstract-ict19.pdf'>Extended abstract (preprint)</a>: [2 MB]
</td>
</tr>
<!--tr>
<td align='center' valign='top' width='180'><a href=''><img src="img/pdf.gif" width="64" height="64" alt="" title="" border="0" /></td><td>
<a href='./notavailable><a>Paper (Low Resolution)</a>: [? MB] (not yet available)</td>
</tr-->
<tr>
<td>
<small>
This is the author's preprint. The definitive version of the paper will be available at
<a href='https://www.ndt.net/search/docs.php3?showForm=off&id=23672' target=_blank>NTD</a>.
</small>
</td>
</tr>
</table>
<!-- <table width='100%' border='0'>
<tr>
<td align='center' valign='top' width='180'><a href='paper-ccis.pdf'></a></td>
<td>
<a href='paper-ccis.pdf'>Extended Journal Paper (Draft)</a>: [7 MB]
</td>
</tr>
<tr>
<td align='center' valign='top' width='180'> </td>
<td>
<small>
This is the authors preprint. The definitive version of the paper is be available at
<br>the <a href='https://link.springer.com/chapter/10.1007/978-3-319-25117-2_4' target=_blank>Springer</a>.
</small>
</td>
</tr>
</table> -->
<br>
<br>
Video of the talk @ <a href="https://www.youtube.com/watch?v=s_JpOYMUjUY&feature=youtu.be">iCT</a>
<!--Additional Material:
<br><br>
<table width='100%' border='0'>
<tr>
<td align='center' valign='top' width='180'><a href='http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-main%20video.mp4'><img src="img/video.gif" width="64" height="64" alt="" title="" border="0" /></a></td><td>
<a href='http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-main%20video.mp4'>Main Video (mp4)</a>: [123 MB]</td>
</tr>
<tr>
<td align='center' valign='top' width='180'><a href='http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-applications%20video.mp4'><img src="img/video.gif" width="64" height="64" alt="" title="" border="0" /></a></td><td>
<a href='http://www.cg.tuwien.ac.at/research/publications/2013/arikan-2013-osn/arikan-2013-osn-applications%20video.mp4'>Applications Video (mp4)</a>: [109 MB]</td>
</tr>
<tr>
<td align='center' valign='top' width='180'><a href='results/arikan-2012-osn-resultImages.zip'><img src="img/file.gif" width="64" height="64" alt="" title="" border="0" /></td><td>
<a href='results/arikan-2012-osn-resultImages.zip'>Result Images (png, zipped)</a>: [18 MB]</td>
</tr>
</table> -->
</td>
</tr>
</table>
<p></p>
<!--<table width="100%" border="0" cellspacing="2" cellpadding="2">
<tr><td><h2>Bibtex</h2></td></tr>
<tr>
<td class="border_all" style="text-align:left;">
<pre style="font-size: 10px; text-align: left;">
@inproceedings{to appear,
author = {Georg Haaser and
Harald Steinlechner and
Michael May and
Michael Schw{\"{a}}rzler and
Stefan Maierhofer and
Robert F. Tobler},
title = {CoSMo: Intent-based Composition of Shader Modules},
booktitle = {{GRAPP}},
pages = {189--199},
publisher = {SciTePress},
year = {2014}
}
</pre>
</td>
</tr>
</table>-->
</div>
<small><small>
| maintained by harald steinlechner | hs -at- vrvis.at | last update: 06.12.2018 | <br>
</small></small>
<p>
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