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<p class="MsoNormal"><span lang="EN-US">Dear colleagues,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We invite you to participate in the <b>UPAR Challenge 2027</b>, organized in conjunction with the
<b>Real-World Surveillance (RWS) Workshop at WACV 2027</b>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The challenge focuses on human-centric understanding in real-world surveillance and comprises three tracks:<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoNormal" style="mso-list:l0 level1 lfo1"><b><span lang="EN-US">Pedestrian Attribute Recognition (PAR)</span></b><span lang="EN-US"> Recognition of pedestrian attributes under challenging domain shifts.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><b><span lang="EN-US">Attribute-Based Person Retrieval (ABPR)</span></b><span lang="EN-US"> Retrieval of pedestrians using semantic attribute descriptions across datasets and surveillance domains.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><b><span lang="EN-US">Human Pose Estimation (HPE)</span></b><span lang="EN-US"> Estimation of human body keypoints under variations in viewpoint, resolution, illumination, and occlusion.<o:p></o:p></span></li></ol>
<p class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal"><b>Important dates (AoE):</b> <o:p></o:p></p>
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<p class="MsoNormal"><b>Date<o:p></o:p></b></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><b>Event<o:p></o:p></b></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">September 21, 2026<o:p></o:p></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">Tracks 1 and 2 open<o:p></o:p></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">September 30, 2026<o:p></o:p></p>
</td>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">Track 3 opens<o:p></o:p></p>
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<p class="MsoNormal">October 21, 2026<o:p></o:p></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal">Challenge submission deadline<o:p></o:p></p>
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<p class="MsoNormal">October 23, 2026<o:p></o:p></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><span lang="EN-US">Paper submission deadline for challenge participants<o:p></o:p></span></p>
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<p class="MsoNormal">October 26, 2026<o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US">Code and fact sheet submission deadline<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The challenge offers an opportunity to benchmark new methods, investigate practical challenges in surveillance imagery, and contribute to research on unified pedestrian understanding.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Further information:<o:p></o:p></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo2"><span lang="EN-US">RWS Workshop:
</span><a href="https://vap.aau.dk/rws/" target="_blank" title="https://vap.aau.dk/rws/"><span lang="EN-US">https://vap.aau.dk/rws/</span></a><span lang="EN-US"><o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo2"><span lang="EN-US">Track 1 — PAR:
</span><a href="https://www.codabench.org/competitions/18180/" target="_blank" title="https://www.codabench.org/competitions/18180/"><span lang="EN-US">https://www.codabench.org/competitions/18180/</span></a><span lang="EN-US"><o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo2"><span lang="EN-US">Track 2 — ABPR:
</span><a href="https://www.codabench.org/competitions/18196/" target="_blank" title="https://www.codabench.org/competitions/18196/"><span lang="EN-US">https://www.codabench.org/competitions/18196/</span></a><span lang="EN-US"><o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo2"><span lang="EN-US">Track 3 — HPE:
</span><a href="https://www.codabench.org/competitions/18273/" target="_blank" title="https://www.codabench.org/competitions/18273/"><span lang="EN-US">https://www.codabench.org/competitions/18273/</span></a><span lang="EN-US"><o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We look forward to your participation and contributions.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<br>
The UPAR Challenge Organizers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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