<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif;font-size:small"><b style="color:rgb(0,0,0)">When:</b><span style="color:rgb(0,0,0)">         Tuesday, July 19th at <b style="background-color:rgb(255,255,0)">3</b></span><span style="color:rgb(0,0,0);background-color:rgb(255,255,0)"><b>:30pm CT</b></span></div><div style="padding:20px 0px 0px"><table cellpadding="0" style="border-collapse:collapse;margin-top:0px;width:auto;letter-spacing:0.2px;display:block"></table></div><div><div id="m_-7708101682680778339gmail-m_-8116292723514593557m_4218621122416795104m_8872870758429905350gmail-:3f7" style="direction:ltr;margin:8px 0px 0px;padding:0px"><div id="m_-7708101682680778339gmail-m_-8116292723514593557m_4218621122416795104m_8872870758429905350gmail-:3f8" style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:1.5;overflow:hidden"><div dir="ltr"><div class="gmail_default"><div class="gmail_default"><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"><b>Where:</b><b>  </b>     Talk will be given <font style="font-weight:bold"><u style="background-color:rgb(255,255,0)">live, in-person</u></font><font style="font-weight:bold"> </font>at</font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif">                       TTIC, 6045 S. Kenwood Avenue</font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif">                       5th Floor, Room 530<b>              </b>   </font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"><br></font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"><br></font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"><b>Who:</b><b> </b>          Itai Lang, Tel Aviv University</font></p><table border="0" cellspacing="0" cellpadding="0" width="0" style="width:0in;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial;border-collapse:collapse"><tbody><tr><td style="padding:0in"></td></tr></tbody></table><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"> </font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="georgia, serif"><br></font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif"><font color="#000000"><b>Title:</b><b> </b>          </font>Learning-Based Manipulation of 3D Point Clouds</font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif"><br></font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif"><br></font></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font face="georgia, serif"><b>Abstract:    </b>A point cloud is a ubiquitous 3D data representation used in various fields, including 3D mapping, robotics, and autonomous driving. Typically, the raw point cloud is manipulated to carry out desired applications, and an effective choice to apply such manipulation is to leverage the power of deep learning models. In this talk, I will present learning-based point cloud manipulation in three aspects: sampling, dense correspondence, and adversarial attacks. First, we will see that it is better to learn to sample. Specifically, I will explain how we overcame the non-differentiability of the sampling operation and trained a neural network to select the most important points for a task at hand, such as point cloud classification and reconstruction. Next, I will show how manipulating a source point cloud to a target shape, using latent space similarity and the target coordinates, leads to a dense point correspondence map without using any ground-truth matching supervision. Finally, we will witness the effect of a new adversarial attack carried out at a geometric level. In this setting, the perturbation of an input point cloud misleads an autoencoder and causes it to reconstruct a completely different output shape at our will.<br><br><br><b>Bio:   </b>Itai Lang is a PhD candidate at Tel Aviv University, advised by Professor Shai Avidan. Itai's research interests include computer vision and deep learning for 3D point clouds. Before, he was a senior computer vision and image processing algorithm engineer at Samsung's R&D center. Itai received his BSc degree in Electrical Engineering and BA degree in Physics from the Technion (Summa Cum Laude) as an alumnus of "Psagot" - the elite academic program of the Israeli Defense Forces. He holds an MSc degree in Electrical Engineering from Tel Aviv University, where he studied the optimization of lesion segmentation in medical images. In the coming academic year, Itai will join the 3DL collective at the University of Chicago as a postdoctoral research fellow.<br></font></p><p class="MsoNormal" style="margin:0in;color:rgb(80,0,80);line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><br></p><p class="MsoNormal" style="margin:0in;line-height:normal;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><font color="#000000" face="arial, sans-serif"><b><br></b></font></p></div></div></div></div></div></div><div class="gmail_default" style="font-family:georgia,serif;font-size:small"><b style="color:rgb(0,0,0)">Host:         <a href="mailto:greg@ttic.edu" target="_blank">Greg Shaknarovich</a> & <a href="mailto:ranahanocka@uchicago.edu" target="_blank">Rana Hanocka</a></b></div><div class="gmail_default" style="font-family:georgia,serif;font-size:small"><br clear="all"></div><div><br></div>-- <br><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><b style="background-color:rgb(255,255,255)"><font color="#3d85c6">Brandie Jones </font></b><div><div><i><b style="background-color:rgb(255,255,255)"><font color="#3d85c6">Administrative Assistant</font></b></i></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">Toyota Technological Institute</font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">6045 S. Kenwood Avenue</font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6">Chicago, IL  60637</font></span></div></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6"><a href="http://www.ttic.edu" target="_blank">www.ttic.edu</a> </font></span></div><div><span style="background-color:rgb(255,255,255)"><font color="#3d85c6"><br></font></span></div><div><font color="#3d85c6"><div style="background-color:rgb(238,238,238)">Working Remote on Tuesdays</div></font></div></div></div></div>