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<html>
<head>
<title>MeronymNet</title>
<meta property="og:image" content="Path to my teaser.png"/> <!-- Facebook automatically scrapes this. Go to https://developers.facebook.com/tools/debug/ if you update and want to force Facebook to rescrape. -->
<meta property="og:title" content="MeronymNet: A Hierarchical Model for Unified and Controllable Multi-Category Object Generation" />
<meta property="og:description" content="Paper description." />
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</head>
<body>
<br>
<center>
<span style="font-size:38px">MeronymNet: A Hierarchical Model for Unified and Controllable Multi-Category Object Generation</span>
<br>
<br>
<table align=center width=600px>
<table align=center width=800px>
<tr>
<td align=center width=100px>
<center>
<span style="font-size:24px"><a href="https://notabee.github.io/">Rishabh Baghel</a></span>
</center>
</td>
<td align=center width=100px>
<center>
<span style="font-size:24px"><a href="linkedin.com/in/abhishek-trivedi-108472155">Abhishek Trivedi</a></span>
</center>
</td>
<td align=center width=10px>
<center>
<span style="font-size:24px"><a href="https://www.linkedin.com/in/tejas-ravichandran/">Tejas <br>Ravichandran</a></span>
</center>
</td>
<td align=center width=100px>
<center>
<span style="font-size:24px"><a href="https://ravika.github.io">Ravi Kiran Sarvadevabhatla</a></span>
</center>
</td>
</tr>
</table>
<br>
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<td align=center width=120px>
<center>
<span style="font-size:24px"><a href=''>[Paper]</a></span>
</center>
</td>
<td align=center width=120px>
<center>
<span style="font-size:24px"><a href="https://github.com/atmacvit/meronymnet">[GitHub]</a></span><br>
</center>
</td>
</tr>
</table>
</table>
</center>
<br>
<center>
<table align=center width=850px>
<tr>
<td>
<center>
<img class="round" style="width:800px" src="./resources/meronymnet-overview-v2.png"/>
</center>
</td>
</tr>
</table>
<hr>
<table align=center width=600px>
<tr>
<td align=center width=300px>
<center>
<td><img class="round" style="width:500px;border:1px solid lightgray" src="./resources/BoxGCN-VAE.png"/></td>
</center>
</td>
<td align=center width=300px>
<center>
<td><img class="round" style="width:500px;border:1px solid lightgray" src="./resources/LabelMap-VAE.png"/></td>
</center>
</td>
</tr>
</table>
<table align=center width=600px>
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<td align=center width=400px>
<center>
<td><img class="round" style="width:500px; border:1px solid lightgray" src="./resources/cSPADE-v2.png"/></td>
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</tr>
</table>
</center>
<hr>
<table align=center width=850px>
<center><h1>Overview</h1></center>
<tr>
<td>
<ul>
<li> We introduce MeronymNet, a novel hierarchical approach for controllable, part-based generation of multi-category objects using a single unified model. </li>
<li> We adopt a guided coarse-to-fine strategy involving semantically conditioned generation of bounding box layouts, pixel-level part layouts and ultimately, the object depictions themselves. </li>
<li> We use Graph Convolutional Networks, Deep Recurrent Networks along with custom-designed Conditional Variational Autoencoders to enable flexible, diverse and category-aware generation of 2-D objects in a controlled manner. </li>
<li> The performance scores for generated objects reflect MeronymNet's superior performance compared to multiple strong baselines and ablative variants. </li>
<li> We also showcase MeronymNet's suitability for controllable object generation and interactive object editing at various levels of structural and semantic granularity. </li>
</ul>
</td>
</tr>
</table>
<br>
<hr>
<!-- <table align=center width=850px> -->
<center> <h1> Resources </h1>
<table width="100%" style="margin: 20pt auto; text-align: center;">
<tr>
<td width="33%" valign="middle">
<center>
<a href="https://github.com/atmacvit/meronymnet" target="_blank"
class="imageLink"><img src="./resources/Octocat.png" ,=, width="75%" /></a><br /><br />
<a href="https://github.com/atmacvit/meronymnet" target="_blank">Code</a>
</center>
</td>
<td width="33%" valign="middle">
<center>
<a href="https://drive.google.com/file/d/1NnY4tcV1wnlSWMzT_Ae6hH6v5l8GCIrX/view?usp=sharing" target="_blank"
class="imageLink"><img src="./resources/Paper_crop.png" ,=, width="75%" /></a><br /><br />
<a href="https://drive.google.com/file/d/1NnY4tcV1wnlSWMzT_Ae6hH6v5l8GCIrX/view?usp=sharing" target="_blank">Paper</a>
</center>
</td>
<td width="33%" valign="middle">
<center>
<a href="" target="_blank"
class="imageLink"><img src="./resources/Supp_crop.png" ,=, width="75%" /></a><br /><br />
<a href="" target="_blank">Supplementary</a>
</center>
</td>
</tr>
</table>
</center>
<br>
<hr>
<center> <h1> Results </h1>
<img class="round" style="width:1000px; border:1px solid lightgray" src="./resources/meronymnet-results-1.png"/>
<p>Look at sample generations by MeronymNet. For each sample, the generated bounding box, corresponding label mask and the RGB object can be seen. Notice the diversity in number of parts, appearance and viewpoint among the generated objects.</p>
</center>
<br>
<hr>
<center> <h1> Application Scenario: Interactive Modification </h1>
<img class="round" style="width:1000px; border:1px solid lightgray" src="./resources/MeronymBot-hstack-1.png"/>
<p>Our model allows users to have control on part level, which they can interact with either using boxes or masks. Notice that the viewpoint for rendering the object has changed from the initial generation to accommodate the updated part list. This scenario especially demonstrates MeronymNet’s holistic, part-based awareness of rendering viewpoints best suited for various part sets.</p>
</center>
<br>
<hr>
<center> <h1> Dataset </h1>
<img class="round" style="width:1000px; border:1px solid lightgray" src="./resources/violinparts.png"/>
<p>We use the large-scale part-segmented object dataset, PASCAL Parts. The plot shows the density distribution of part counts in object instances for each category. The varying range and frequency of part occurrences across categories, combined with the requirement of object generation from a single unified model, poses lots of challenges.</p>
</center>
<br>
<hr>
<!-- <center> <h1> Citation </h1> </center>
<p>
@inProceedings{2021MeronymNet,
title = {MeronymNet: A Hierarchical Model for Unified and Controllable Multi-Category Object Generation},
author = {Baghel, Rishabh and Trivedi, Abhishek and Ravichandran, Tejas and Sarvadevabhatla, Ravi Kiran},
booktitile = {ACMMM},
year = {2021}
}
</p>
<br>
<hr> -->
<center> <h1> Contact </h1>
<p>If you have any question, please contact Dr. Ravi Kiran Sarvadevabhatla at <a href="mailto:ravi.kiran@iiit.ac.in">ravi.kiran@iiit.ac.in </a>.</p>
</center>
<!--
<center><h1>Talk</h1></center>
<p align="center">
<iframe width="660" height="395" src="https://www.youtube.com/embed/dQw4w9WgXcQ" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen align="center"></iframe>
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<table align=center width=800px>
<br>
<tr>
<center>
<span style="font-size:28px"><a href=''>[Slides]</a>
</span>
</center>
</tr>
</table>
<hr>
-->
<!--table align=center width=850px>
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Short description if wanted
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<table align=center width=450px>
<center><h1>Paper and Supplementary Material</h1></center>
<tr>
<td><a href=""><img class="layered-paper-big" style="height:175px" src="./resources/paper.png"/></a></td>
<td><span style="font-size:14pt">F. Author, S. Author, T. Author.<br>
<b>Creative and Descriptive Paper Title.</b><br>
In Conference, 20XX.<br>
(hosted on <a href="">ArXiv</a>)<br>
(<a href="./resources/camera-ready.pdf">camera ready</a>)<br>
<span style="font-size:4pt"><a href=""><br></a>
</span>
</td>
</tr>
</table>
<br>
<table align=center width=600px>
<tr>
<td><span style="font-size:14pt"><center>
<a href="./resources/bibtex.txt">[Bibtex]</a>
</center></td>
</tr>
</table>
<hr>
<br>
<table align=center width=900px>
<tr>
<td width=400px>
<left>
<center><h1>Acknowledgements</h1></center>
This template was originally made by <a href="http://web.mit.edu/phillipi/">Phillip Isola</a> and <a href="http://richzhang.github.io/">Richard Zhang</a> for a <a href="http://richzhang.github.io/colorization/">colorful</a> ECCV project; the code can be found <a href="https://github.com/richzhang/webpage-template">here</a>.
</left>
</td>
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