Add Lecture 18 details to schedule

Added a new lecture entry with readings for 3D Image Understanding II.

Author: AnanyaBal

schedule.html

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       <td align="left">Jun-Yan </td>
       <td></td>
     </tr>
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+	<tr>
+      <td sdnum="1033;0;@" align="left">Lecture 18<br>Wednesday 11/05/25</td>
+      <td align="left"><a href="">3D Image Understanding II</a></td>
+      <td align=“left”>
+        <br>Readings:
+        <br>#1: <a href="https://arxiv.org/abs/1612.00593">Charles R. Qi*, Hao Su* et al.</a>
+        <br>#2: <a href="https://dl.acm.org/doi/pdf/10.1145/3326362"> Yue Wang et al.</a>
+        <br>#3: <a href="https://openaccess.thecvf.com/content_CVPR_2019/papers/Park_DeepSDF_Learning_Continuous_Signed_Distance_Functions_for_Shape_Representation_CVPR_2019_paper.pdf">Jeong Joon Park et al.</a>
+        
+      </td>
+      <td align="left">Jun-Yan </td>
+      <td></td>
+    </tr>
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       <td colspan="6" class="schedule_week" align="center" height="28" valign="middle">Week 10</td>