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<a id="nametitle" href="#body">Ramviyas Nattamai Parasuraman<br />       <span class="subtitle">ASSISTANT PROFESSOR, <a href="http://www.cs.uga.edu">UGA CS</a></span></a>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b> New Heterogeneous Robotics (HeRo) Lab <a href="http://hero.uga.edu/">website</a> is up. Send me an email if you are interested in joining our reserach lab.</span></div> </div> </div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b> Our paper on multi-robot reactive planning got accepted into Multi-Robot Systems Conference to be held in Rutgers, NJ (Aug 2019)! </span></div> </div> </div>
<div class="testimonials-item text-center">
<div class="clearfix">
<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b> We hosted <a href="http://cgi.csc.liv.ac.uk/~leszek/"> Prof. Leszek Gasieniec </a> (University of Liverpool, UK) at UGA (Jan 2019). </span></div> </div> </div>
<div class="testimonials-item text-center">
<div class="clearfix">
<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b>Our paper on multi-robot rendezvous based on bearing-aided tracking of network topology is accepted in the Elsevier Adhoc Network journal </span></div> </div> </div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b>Received Google Cloud Education Grant </span></div> </div> </div>
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<div class="clearfix">
<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Nov 2018: </b>Received UGA - University of Liverpool Faculty Research Exchange Visit Grant</span></div> </div> </div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Oct 2018: </b>Our paper on multi-master ROS solution for multi-hop wireless networks got accepted in the Elsevier Robotics and Automation Systems journal </span></div>
</div>
</div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Oct 2018: </b>Our paper on classifying gesures using Wi-Fi signals on smartphone got accepted in the IEEE Sensors Journal </span></div>
</div>
</div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Aug 2018: </b>Our paper on "Multi-point Multi-Robot Rendezvous" got accepted in the IEEE Transactions on Cybernetics (IF: 8.8)</span></div>
</div>
</div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Aug 2018: </b>Our paper got accepted for oral presentation at the Distributed Autonomous Robotics Systesm (DARS) 2018 conference in Boulder, Colorado!</span></div>
</div>
</div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Aug 2018: </b>I have joined the University of Georgia (UGA) Department of Computer Science as an Assistant Professor with a specialization in Robotics.</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>May-Dec 2018: </b>I'm serving as a Guest Editor for the Technologies Journal <a href="http://www.mdpi.com/journal/technologies/special_issues/Assistive_Robotics" target="_blank" rel="nofollow noopener">special issue on Assistive Robotics</a>. Please consider submitting your best paper!</span></div>
</div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>July 2018: </b>Our paper got accepted to the <a href="http://www.ece.ucf.edu/CAVS2018" target="_blank" rel="nofollow noopener">IEEE Connected and Automated Vehicles Symp.</a>, associated with the IEEE Vehicular Technology Conference, to be held on 27-30 August 2018, Chicago, USA.</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>June 2018: </b>I gave a talk on "Herding Mobile Robots in Multiple Groups" at the <a href="http://www.ttic.edu/mwrw/" target="_blank" rel="nofollow noopener">Midwest Robotics Workshop</a> 2018.</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Mar 2018: </b>I gave a talk on the topic "Use of Wireless Network Measurements in Robotics" at the <a href="http://iitd.ac.in/" target="_blank" rel="nofollow noopener">Indian Institute of Technology Madras.</a></span></div>
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<div class="testimonials-item text-center"><div class="clearfix"><span>NEWS & UPDATES</span><div><span style="color: #660000;"><b>Feb 2018: </b>Our paper got accepted to the <a href="http://vam-hri.xyz/" target="_blank" rel="nofollow noopener">Int. workshop on Virtual, Augmented and Mixed Reality for Human-Robot Interaction (VAM-HRI)</a>, associated with the IEEE HRI conference!</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Jan 2018: </b>I gave a Seminar on the topic "Gaussian Processes Regression" to the members of the SMART lab at Purdue.</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>July 2017:</b> I've participated in the RSS Workshop on Robot Communications at MIT, Boston. We presented two posters on our works based on RCAMP and ROS-Pound.</span></div>
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<span>NEWS & UPDATES</span><div><span style="color: #660000;"><b>June 2017:</b> Our paper on Resilient Communication Aware Motion Planner (RCAMP) got accepted to <a href="http://iros2017.org/" target="_blank" rel="nofollow noopener">IROS 2017</a>!</span></div>
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<span>NEWS & UPDATES</span>
<div><b style="color: #660000;">May 2017:</b><span style="color: #660000;"> I've participated in the Mid-West Robotics Workshop held at TTI Chicago, with a poster presentation of our work "Multi-Robot Rendezvous".</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Apr 2017:</b> I gave a guest lecture on the topic "Design Guidelines for Mobile Robotic Systems in Harsh Environments" in the course CNIT 581-008 - Software Design and Development for Robotics (2017 Spring).</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Mar-Apr 2017:</b> I gave a Short Course on Robot Operating System (ROS) to the SMART lab graduate students. <a href="http://www.smart-laboratory.org/lab/seminar_ros.html" target="_blank" rel="nofollow noopener">Link here</a>.</span></div>
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<span>NEWS & UPDATES</span>
<div><span style="color: #660000;"><b>Oct 2016:</b> I gave a guest lecture on the topic "Assistive Technologies for disabled - Mobility Enhancement" in the course CNIT 581-AST - Introduction to Assistive Technology and Robotics (2016 Fall).</span></div>
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<p><img src="img/Ramviyas_ProfilePicture.jpg" alt="profile_picture" class="img-responsive"> </p>
<b> <br /></b>
<b>Research interests:<br /></b>
<ul><li class="newli">Networked Multi-Robot Systems</li>
<li class="newli">Intelligent Teleoperation</li>
<li class="newli">Robot Communications</li>
<li class="newli">Robotics in Nuclear Applications</li>
<li class="newli">Search and Rescue Robotics</li>
<li class="newli">Human-Robot interfaces</li>
<li class="newli">Machine Learning</li></ul>
<br/> <b><a href="https://scholar.google.com/citations?user=gmhcslQAAAAJ&hl=en" target="_blank_">Google Scholar profile</a></b>
<br/> <b><a href="https://www.researchgate.net/profile/Ramviyas_Parasuraman" target="_blank_">Research Gate profile</a></b><br>
<div itemscope itemtype="https://schema.org/Person"><a itemprop="sameAs" content="https://orcid.org/0000-0001-5451-8209" href="https://orcid.org/0000-0001-5451-8209" target="orcid.widget" rel="noopener noreferrer" style="vertical-align:top;"><img src="https://orcid.org/sites/default/files/images/orcid_16x16.png" style="width:1em;margin-right:.5em;" alt="ORCID iD icon">orcid.org/0000-0001-5451-8209</a></div>
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<h3>Welcome to my homepage!</h3>
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<p>I'm an Assistant Professor at <a href="http://www.cs.uga.edu/" target="_blank" rel="nofollow">University of Georgia (UGA) Department of Computer Science</a>, with a focus on Robotics. I direct the <a href="htto://hero.uga.edu">Heterogeneous Robotics (HeRo)</a> reserach lab. I'm a faculty fellow in the <a href="http://robotics.uga.edu">Faculty of Robotics</a> and the <a href="http://ai.uga.edu">Institute for Artificial Intelligence</a> at UGA.</p><br />
<p>Previously, I was a Postdoctoral Associate at Purdue University, working with <a href="http://web.ics.purdue.edu/~minb/" target="_blank" rel="nofollow">Prof. Byung-Cheol Min</a> of <a href="http://smart-laboratory.org" target="_blank" rel="nofollow">SMART Lab</a> on projects relevant to Networked Robotics and Assistive Technologies.</p><br />
<p>Before that, I was working as a Postdoctoral Researcher in the <a href="https://www.kth.se/en/csc/forskning/rpl" target="_blank" rel="nofollow">Robotics Perception and Learning (RPL)</a> lab (previously Computer Vision and Active Perception lab) at <a href="http://www.kth.se" target="_blank" rel="nofollow">KTH Royal Institute of Technology</a>, Sweden with <a href="http://www.csc.kth.se/~petter/" target="_blank" rel="nofollow">Prof. Petter Ogren</a>. At KTH, I was involved in two European projects under EU-FP7 grants, <a href="http://www.tradr-project.eu/" target="_blank" rel="nofollow">TRADR </a> and <a href="http://reconfig.eu/" target="_blank" rel="nofollow">RECONFIG</a>.</p><br />
<p>For my doctoral research, I worked at <a href="http://cern.ch/" target="_blank" rel="nofollow">CERN</a> (European Organization for Nuclear Research), Switzerland, conducting research in mobile robotics and received my Ph.D. (Robotics and Automation) from <a href="http://www.upm.es/internacional" target="_blank" rel="nofollow">Universidad Politecnica de Madrid (UPM)</a>, Spain in Oct 2014. My Ph.D. thesis titled <a href="https://cds.cern.ch/record/1956445?ln=en" target="_blank" rel="nofollow">"Wireless communication enhancement methods for mobile robots in radiation environments"</a> was on teleoperated mobile robots for radiation survey applications at CERN. I was part of the EU-ITN project <a href="http://cordis.europa.eu/result/rcn/92232_en.html" target="_blank" rel="nofollow">PURESAFE</a> as a Marie-Curie Early State Researcher. I had developed tools for optimizing and predicting wireless communication in mobile robots applied in hostile environmental conditions. While at CERN, I also led a part of the Robotic Train project (TIM - Train Inspection Monorail) for conducting radiation inspections at the Large Hadron Collider (LHC).</p>
For full list of publication <a href="publications.html">click here</a>
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<b>Teaching and Supervision:</b>
<p>I was a teacher of "EL2310 Scientific Programming" masters level course at KTH, Fall 2015 and Fall 2016. I occasionally provide guest lectures in several courses at Purdue University. I was a co-supervisor of two MS students at KTH. I currently mentor a few Ph.D. and M.S. students at the SMART lab in Purdue.</p>
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<h2 class="text-center" id="researchtitle" >Research</h2>
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<p id="page1">My research interests are the following:</p>
<ul id="page2">
<b><li id="page3">Control and Communication of Heterogeneous Mobile Robots and Networked Multi-Robot Systems;</li>
<li id="page3">Machine Learning based Applications in Robotics and Wireless Communications (for perception, classification, and activity recognition).</li></b>
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<div class="recent-works">
<h3 id="researchtitle">Robot Control and Communication</h3>
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<p id="new1"><span class="page6">Multi-point Rendezvous and Multi-Robot Herding:</span> In this work, we introduce a coordinate-free multi-point rendezvous control strategy to enable multiple robots to gather at different locations by tracking their hierarchy in a connected interaction graph. A key novelty in this strategy is the gathering of robots in different groups rather than at a single consensus point, motivated by autonomous multi-point recharging and flocking control problems. </p>
<p> <a class="video"
href="https://www.youtube.com/embed/DKNS8kE1IrI?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image1.png" class="img-responsive" style="height: 350px;
width: 500px;"></a></p>
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<div class="work-item">
<p id="new1">Multi-Robot Hierarchical Rendezvous Control:</span> Using a hierarchical network topology tree, we devised a rendezvous control algorithm that can work on distributed fashion using the local sensing information at the robots, to collect all the robots rendezvous at a desired location in a hierarchical movement aided by the bearing-based source tracking of radio signals.</p>
<p><a class="video"
href="https://www.youtube.com/embed/lRZ35IUgqgQ?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image2.png" class="img-responsive" style="height: 350px;
width: 500px;"></a></p>
</div>
<div class="work-item">
<p id="new1"><span class="page6">Resilient Communication-Aware Motion Planner (RCAMP) (with Sergio Caccamo):</span> We developed a resilient motion planner for mobile robots to find an optimal path that guarantees traversability and wireless connectivity. The RCAMP can also be used to re-establish the wireless connection in case of a communication loss with a mobile robot.</p>
<p><a class="video"
href="https://www.youtube.com/embed/svZw8_FhKeE?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image3.png" class="img-responsive" style="height: 350px;
width: 500px;"></a>
</p>
</div>
<div class="work-item">
<p id="new1"><span class="page6">Human-Robot Interface (HRI) for Wireless Network Connectivity Situation Awareness in UGV Teleoperation (with Sergio Caccamo):</span> We extended a UGV Teleoperation Interface called Free Look Control (FLC) with the Wireless Network Connectivity Information. We used directional antennas to obtain the Direction of Arrival (DOA) (or gradients) of the Wi-Fi Received Signal Strength. Using this DoA we devised a Human-Robot Interface (HRI) that can support a teleoperator with Situation Awareness (SA) on wireless connectivity.</p>
<p><a class="video"
href="https://www.youtube.com/embed/YcbPi1c7eaQ?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image4.png" class="img-responsive" style="height: 350px;
width: 500px;"></a>
</p>
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<h3 id="researchtitle">Machine Learning</h3>
<div id="works">
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<p id="new1"><span class="page6">Wisture - A Solution for Gesture detection in smartphones using WiFi signals (with <a href="https://mohaseeb.github.io/" target="_blank" rel="nofollow noopener">Mohamed Haseeb</a>):</span> Wisture is a new online machine learning solution for recognizing touch-less dynamic hand gestures on a smartphone. Wisture relies on the standard Wi-Fi Received Signal Strength (RSS) using a Long Short-Term Memory (LSTM) Recurrent Neural Network (RNN), thresholding filters and an artificial traffic induction approach. Look at the <a href="http://npramviyas.com/codes-and-datasets/" target="_blank" rel="noopener">Codes and Datasets</a> page for more information on the Wisture.</p>
<p><a class="video"
href="https://www.youtube.com/embed/5v4KpAFvxpU?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image5.png" class="img-responsive" style="height: 350px;
width: 500px;"></a></p>
</div>
<div class="work-item">
<p id="new1">Gaussian Processes based Radio Signal Strength Prediction on Mobile Robots:</span> We used Gaussian Process Regression to predict spatial changes in the RSS on the path of a mobile robot. The solution is composed of two stages. First, the location of radio signal source is predicted using a grid-based RSS gradient estimation method. Second, an online iterative Gaussian Process Regression (GPR) solution is used to predict the RSS in the future robot positions with reference to the current position of the robot.</p>
<p><a class="video"
href="https://www.youtube.com/embed/zJsTLiYdSlg?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image6.png" class="img-responsive" style="height: 350px;
width: 500px;"></a></p>
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<div class="work-item">
<p id="new1"><span class="page6">Reinforcement Learning of Behavior Trees using Genetic Programming (with Michele Collendanchise):</span> Taking advantage of modularity and reactiveness of Behavior Trees, we propose a model-free Automated Planned framework using Genetic Programming to derive an action plan for an autonomous agent to achieve a given goal in unknown environments. The advantages of the proposed approach are based on the advantages of BT over Finite State Machines. In particular, our approach avoids the problem of logic violation during the learning process.</p>
<p><a class="video"
href="https://www.youtube.com/embed/ZositEzjidE?rel=0&wmode=opaque$amp;autoplay=1"
><img src="img/image7.png" class="img-responsive" style="height: 350px;
width: 500px;"></a></p>
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<h3 class="text-center">Teaching</h3>
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<p class="tab2"> <b> Fall 2020: <a href="csci_x530_Fa19.html"> CSCI (ARTI) 4530/6530 Introduction to Robotics </a> course. </b> </p> <br/>
<p class="tab2"> Spring 2020: CSCI 8535 Multi Robot Systems course for Graduate students. </p> <br/>
<p class="tab2"> Fall 2019: <a href="csci_x530_Fa19.html"> CSCI (ARTI) 4530/6530 Introduction to Robotics </a> course. </b> </p> <br/>
<p class="tab2"> Spring 2019: <a href="csci_8535_Sp19.html">CSCI 8535 Multi Robot System </a> course at UGA. </p> <br/>
<p class="tab2"> Fall 2018: <a href="csci_x530.html">CSCI (ARTI) 4530/6530 Introduction to Robotics</a> course at UGA. </p> <br/>
<br>
<p>Previously, I was the course responsible and teacher of the masters-level course "<a href="http://www.kth.se/student/kurser/kurs/EL2310?l=en" rel="nofollow">EL2310</a>: Scientific Programming" in Fall 2015 (with <a href="http://www.yaseminbekiroglu.com/" target="_blank" rel="nofollow">Dr.Yasemin Bokiroglu</a>) and in Fall 2016 (with <a href="https://people.kth.se/~hkarao/index.html" target="_blank" rel="nofollow">Dr.Hakan Karao</a>) at KTH.
The goal of this course is to provide the participants with a basic knowledge of programming in general and specifically in MATLAB, C and C++. The course materials, lecture notes, and schedule can be accessed <a href="http://www.csc.kth.se/~yaseminb/el2310.html" target="_blank" rel="nofollow">here.</a>. </p>
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<h2 class="text-center">Guest Lecturers and Short
Courses:</h2>
<p>I occasionally provide guest lectures and short courses at Purdue
University. <br />
<ul class="tabnew">
<li class=tabnew1 >24 Oct 2017, "Robotic Technologies for Assistive Wheelchairs", <a href="https://polytechnic.purdue.edu/courses/cnit-58100-ast" target="_blank" rel="nofollow">CNIT 581-AST: Introduction to Assistive Technology and Robotics</a>.</li>
<li class=tabnew1 >18 Aug 2017, Tutorial on Robotarium for Muti-Robot Experiments, to the SMART lab members.</li>
<li class=tabnew1 >Feb-May 2017 (10 weeks), <a href="http://www.smart-laboratory.org/lab/seminar_ros.html" target="_blank" rel="nofollow">Short course on Introduction to ROS</a>, to the SMART lab members.</li>
<li class=tabnew1 >18 Apr 2017, "Design Guidelines for Mobile Robotic Systems in Harsh Environments", <a href="https://polytechnic.purdue.edu/courses/cnit-58100-sdr-previously-cnit-58100-008?width=600&height=600" target="_blank" rel="nofollow">CNIT 581-008: Software Design and Development for Robotics</a>.</li>
<li class=tabnew1 >18 Oct 2016, "Assistive Technologies for disabled - Mobility Enhancement", <a href="https://polytechnic.purdue.edu/courses/cnit-58100-ast" target="_blank" rel="nofollow">CNIT 581-AST: Introduction to Assistive Technology and Robotics</a>.</li>
</ul></p>
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<div class="clearfix">
<h2 class="text-center">Talks and Invited
Seminars:</h2>
<p>Below is a maps list of invited talks and seminars.<br />
<ul class="tabnew">
<li class=tabnew1 >29 Jan 2018, Seminar on Gaussian Processes Regression (GPR), to the SMART lab members.</li>
<li class=tabnew1 >24 Mar 2017, "<a href="https://sites.google.com/site/npramviyas/PostdocSeminar_Parasuraman_Poster.pdf?attredirects=0&d=1" target="_blank">Resilient Wireless Communications for Field Robot</a>", Polytechnic Postdoctoral Seminar Series, Purdue University, West Lafayette (IN), USA.</li>
<li class=tabnew1 >16 Mar 2016, "Progress on Work Package 2 of EU-FP7 TRADR Project", <a href="http://www.tradr-project.eu/tradr-year-2-review-in-dortmund-germany/" target="_blank" rel="nofollow">TRADR Review Meeting Year 2</a>, Dortmund IFR, Germany.</li>
<li class=tabnew1 >22 Jan 2016, "<a href="https://indico.cern.ch/event/346833/contributions/1751172/" target="_blank" rel="nofollow">Wireless Communication Enhancement Methods for Mobile Robots in Scientific Facilities (RP6)</a>" <a href="https://sites.google.com/site/npramviyas/goog_991085987" target="_blank" rel="nofollow">PURESAFE Final Conference</a>, Geneva, Switzerland.</li>
<li class=tabnew1 >18 Dec 2012, "Generic mobile platform modules development for remote radiation survey and inspection", CERN Engineering Department Technical Meeting (ENTM), Geneva, Switzerland.</li>
</ul>
</p>
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<h2 class="text-center">Supervision</h2>
<p>Current students (as a mentor):<br />
<ul class="tabnew">
<li class=tabnew1 >Shaocheng Luo, Ph.D. student, Purdue University</li>
<li class=tabnew1 >Jun-Han Bae, Ph.D. Student, Purdue University</li>
<li class=tabnew1 >Wonse Jo, Ph.D. student, Purdue University</li>
<li class=tabnew1 >Arabindha Samantaray, MS student, Purdue University</li>
<li class=tabnew1 >Yeonju Oh, MS student, Purdue University </li>
<li class=tabnew1 >Shyam Sundar Kannan, MS Student, Purdue University</li>
</ul><br />
</p>
</div>
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<div class="clearfix">
<h2 class="text-center">Past students</h2>
<p><ul class="tabnew">
<li class=tabnew1 >Mohamed Abdulaziz Ali Haseeb, M.Sc. student - KTH, (main supervisor: Ramviyas Parasuraman, co-supervisor: Petter Ogren). Thesis: <a href="http://www.nada.kth.se/~ann/exjobb/mohamed_abdulaziz-ali-haseeb.pdf" rel="nofollow">Gesture detection on smartphones using wireless signals </a> - Fall 2016. Now with Watty, Sweden.</li>
<li class=tabnew1 >Mengchan Li, M.Sc. student - KTH, (main supervisor: Ramviyas Parasuraman, co-supervisor: Petter Ogren). Thesis: <a href="http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A907403&dswid=-1839" rel="nofollow">Spatial Wireless Connectivity Prediction for Mobile Robots</a> - Fall 2015. Now with A.O.Smith, China. </li>
<li class=tabnew1 >Luca Molinari, M.Sc. student - University of Genoa & CERN (as a mentor), Thesis: Wireless relay robot architecture - Spring 2014. Now with CERN.</li>
</ul>
</p>
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<h2 id="prof">Heterogeneous Robotics (HeRo) Research Lab</h2>
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<p>I'm currently establishing a new Heterogeneous Robotics (HeRo) Research Lab at UGA.
Website of the lab: <a href="http://hero.uga.edu" rel="nofollow"> hero.uga.edu </a> </p><br /><br />
<p id="tetclr">Recruiting Students:</p>
<p id="tab_2">I am looking for highly motivated undergraduate and graduate students with research interests in Heterogeneous Multi-Robot Systems. Please send me an email with a breif statement of interest and your CV, if you are interested in working with me!</p>
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<p><i class="fa fa-envelope"></i>ramviyas at uga dot edu</p><br>
<p><i class="fa fa-phone"></i>Phone: (706) 542 2911 </p><br>