Professor
Department of Computer Science
| 
   email: ravin at dgp.toronto.edu voice: (416) 946-3448  | 
  
   postal mail & courier address: Ravin Balakrishnan Department of Computer Science University of Toronto Tel (for courier): 416 978-6025  | 
 
Ravin
Balakrishnan is a Professor at the Department of Computer Science, University of Toronto. He served as the
department s chair from 2015-2019. His research interests are in Human Computer
Interaction (HCI), Information and Communications Technology for Development,
and Interactive Computer Graphics. He is the recipient of an Alfred P. Sloan Research
Fellowship, a Canada Research Chair, an Ontario Premier's Research Excellence
Award, the Bell University Laboratories Associate Chair in HCI, the Canadian
Human Computer Communications Society Achievement Award, multiple best paper
type awards at the top conferences in his field, and was inducted into the ACM
CHI Academy in 2011. In addition to working with students and colleagues at
Toronto, he collaborates with researchers at leading industrial laboratories
and universities worldwide, including stints as a visiting researcher at
Mitsubishi Electric Research Laboratories (MERL), the University of Paris,
INRIA Paris and Lille, Microsoft Research’s Redmond, Beijing, Bangalore and
Cambridge labs, and Hewlett Packard Labs Bangalore. He has been a co-founder of
several companies commercializing research conducted in his lab, including Bump
Technologies (acquired by Google), FindSpace
(acquired by Cougar Group), and Conceptualiz. He
earned his Ph.D. in Computer Science from the University of Toronto, working
with Bill Buxton, while concurrently a
part-time researcher at Alias|wavefront (now part of
Autodesk). He actively consults for various leading companies as a testifying
technical expert on intellectual property matters in multiple countries.
Further information, including publications and videos demonstrating some of
his research, can be obtained from www.dgp.toronto.edu/~ravin
| 
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   148.  | 
  
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   Jiannan
  Li, Maur cio Sousa,
  Karthik Mahadevan, Bryan Wang, Paula Akemi Aoyagui,
  Nicole Yu, Angela Yang, Ravin Balakrishnan, Anthony Tang, Tovi
  Grossman. (2023). Stargazer: An Interactive Camera Robot for Capturing How-To
  Videos Based on Subtle Instructor Cues. Proceedings of CHI 2023 the ACM
  Conference on Human Factors in Computing Systems.  | 
 
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   147.  | 
  
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   Jiannan
  Li, Maur cio Sousa, Chu
  Li, Jessie Liu, Yan Chen, Ravin Balakrishnan, Tovi Grossman.
  (2022). Asteroids: Exploring Swarms of Mini-Telepresence Robots for Physical
  Skill Demonstration. Proceedings of CHI 2022 the ACM Conference on Human
  Factors in Computing Systems.  | 
 
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   146.  | 
  
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   Jiannan
  Li, Jiahe Lyu, Maur cio Sousa, Ravin Balakrishnan, Anthony Tang, Tovi Grossman. (2021). Route Tapestries: Navigating 360
  Virtual Tour Videos Using Slit-Scan Visualizations. Proceedings of UIST
  2021 the ACM Symposium on User Interface Software and Technology.  | 
 
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   145.  | 
  
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   Jiannan
  Li, Ravin Balakrishnan, Tovi Grossman. (2020). StarHopper: A Touch Interface for Remote Object-Centric
  Drone Navigation. Proceedings of Graphics Interface 2020.  | 
 
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   144.  | 
  
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   Laura Di Chen, Ravin Balakrishnan, Tovi
  Grossman (2020). Disambiguation Techniques for Freehand Object Manipulations
  in Virtual Reality. Proceedings of IEEE Conference on Virtual Reality and
  3D User Interfaces.  | 
 
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   143.  | 
  
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   Laura Di Chen, Dustin Freeman, Ravin Balakrishnan. (2019).
  Integrating Multimedia Tools to Enrich Interactions in Live Streaming for
  Language Learning. Proceedings of CHI
  2019 the ACM Conference on Human Factors in Computing Systems.  | 
 
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   142.  | 
  
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   Aakar
  Gupta, Jiushan Yang, Ravin Balakrishnan. (2018).
  Asterisk and Obelisk: Motion Codes for Passive Tagging. Proceedings of UIST 2018 the ACM Symposium on User Interface Software
  and Technology.  | 
 
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   141.  | 
  
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   Teng Han, Jiannan Li, Khalad Hasan, Keisuke Nakamura, Randy Gomez, Ravin
  Balakrishnan, Pourang Irani. (2018). PageFlip: Leveraging page-flipping gestures for efficient
  command and value selection on smartwatches. Proceedings of CHI 2018 the ACM Conference on Human Factors in
  Computing Systems.  | 
 
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   140.  | 
  
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   Aakar
  Gupta, Antony Irudayaraj, Ravin Balakrishnan. (2017). HapticClench:
  Investigating squeeze sensations using memory alloys. Proceedings of UIST 2017 the ACM Symposium on User Interface Software
  and Technology.  | 
 
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   139.  | 
  
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   Aakar
  Gupta, Thomas Pietrzak, Cleon Yau, Nicolas Roussel,
  Ravin Balakrishnan. (2017). Summon and Select: Rapid interaction with
  interface controls in mid-air. Proceedings
  of ISS 2017 the ACM Conference on Interactive Surfaces and Spaces.  | 
 
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   138.  | 
  
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   Rorik
  Henrikson, Bruno De Araujo, Fanny Chevalier, Karan
  Singh, Ravin Balakrishnan. (2016). Multi-device storyboards for cinematic
  narratives in VR. Proceedings of UIST
  2016 the ACM Symposium on User Interface Software and Technology.  | 
 
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   137.  | 
  
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   Aakar
  Gupta, Antony Irudayaraj, Vimal Chandran, Goutham Palaniappan,
  Khai Truong, Ravin Balakrishnan. (2016). Haptic
  learning of freehand semaphoric gesture shortcuts. Proceedings of UIST 2016 the ACM Symposium on User Interface Software
  and Technology.  | 
 
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   136.  | 
  
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   Aakar
  Gupta, Muhammed Anwar, Ravin Balakrishnan. (2016). Porous interfaces for
  small screen multitasking using finger identification. Proceedings of UIST 2016 the ACM Symposium on User Interface Software
  and Technology.  | 
 
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   135.  | 
  
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   Dustin Freeman, Ravin Balakrishnan. (2016). Improv Remix:
  Mixed-reality video manipulation using whole-body interaction to extend
  improvised theatre. Proceedings of DIS
  2016 The ACM Conference on Designing Interactive Systems.  | 
 
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   134.  | 
  
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   Rorik
  Henrikson, Bruno De Araujo, Fanny Chevalier, Karan
  Singh, Ravin Balakrishnan. (2016. Storeoboard:
  Sketching stereoscopic storyboards. Proceedings
  of CHI 2016 the ACM Conference on Human Factors in Computing Systems. p.
  4587 4598.  | 
 
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   133.  | 
  
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   Aakar
  Gupta, Ravin Balakrishnan. (2016). DualKey:
  Miniature screen text entry via finger manipulation. Proceedings of CHI 2016 the ACM Conference on Human Factors in
  Computing Systems. p. 59-70. CHI 2016 Best Paper Honorable Mention Award  | 
 
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   132.  | 
  
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   Aakar
  Gupta, Thomas Pietrzak, Nicolas Roussel, Ravin Balakrishnan.
  (2016). Direct manipulation in tactile displays. Proceedings of CHI 2016 the ACM Conference on Human Factors in
  Computing Systems. p. 3683 3693. CHI 2016 Best Paper Honorable Mention Award  | 
 
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   131.  | 
  
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   Jian Zhao, R. William Soukoreff, Ravin
  Balakrishnan. (2015). Exploring and modeling unimanual object manipulation on
  multi-touch displays. IJHCS:
  International Journal of Human-Computer Studies, 78(0). p. 68-80.  | 
 
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   130.  | 
  
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   Jian Zhao, R. William Soukoreff, Xiangshi Ren, Ravin Balakrishnan. (2014). A model of
  scrolling on touch-sensitive displays.
  IJHCS: International Journal of Human-Computer Studies, 72(12). p.
  805-821  | 
 
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   129.  | 
  
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   Dustin Freeman, Stephanie Santosa,
  Fanny Chevalier, Ravin Balakrishnan, Karan Singh. (2013). LACES: Live
  authoring through compositing and editing of streaming video. Proceedings of CHI 2014 the ACM Conference
  on Human Factors in Computing Systems. p. 1207-1216.  | 
 
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   128.  | 
  
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   Jian Zhao, Daniel Wigdor, Ravin Balakrishnan.
  (2013). TrailMap: Facilitating information seeking
  in a multi-scale digital map via implicit bookmarking. Proceedings of CHI 2013 the ACM Conference on Human Factors in
  Computing Systems. p. 3009-3018.  | 
 
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   127.  | 
  
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   Sajad Shirali-Shahreza, Gerald Penn,
  Ravin Balakrishnan, Yashar Ganjali. (2013). SeeSay and HearSay CAPTCHAs for
  mobile interaction. Proceedings of CHI
  2013 the ACM Conference on Human Factors in Computing Systems. p.
  2147-2156.  | 
 
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   126.  | 
  
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   Stephanie Santosa, Fanny Chevalier,
  Ravin Balakrishnan, Karan Singh. (2013). Direct space-time trajectory control
  for visual media editing. Proceedings
  of CHI 2013 the ACM Conference on Human Factors in Computing Systems. p.
  1149-1158.  CHI 2013 Best Paper Honorable Mention Award  | 
 
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   125.  | 
  
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   Jian Zhao, Christopher Collins, Fanny Chevalier, Ravin
  Balakrishnan. (2013). Interactive exploration of implicit and explicit
  relations in faceted datasets. IEEE
  Transactions on Visualization and Computer Graphics (Proceedings of VAST
  2013). p. 2080-2089.  | 
 
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   124.  | 
  
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   Xiaojun
  Bi, Seok-Hyung Bae, Ravin Balakrishnan. (2013). WallTop:
  Managing overflowing windows on a large display. Human-Computer Interaction, 29(2). p. 153-203.  | 
 
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   123.  | 
  
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   Chun Yu, Ravin Balakrishnan, Ken Hinckley, Tomer Moscovich, Yuanchun Shi.
  (2013). Implicit bookmarking: Improving support for revisitation in
  within-document reading tasks. International
  Journal of Human Computer Studies, 71(3). p. 303-320.  | 
 
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   122.  | 
  
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   Mohit Jain, Ravin Balakrishnan. (2012). User learning and
  performance with bezel menus. Proceedings
  of CHI 2012 the ACM Conference on Human Factors in Computing Systems. p.
  2221-2230.  | 
 
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   121.  | 
  
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   Aakar
  Gupta, William Thies, Edward Cutrell, Ravin
  Balakrishnan. (2012). mClerk: Enabling mobile
  crowdsourcing in developing regions. Proceedings
  of CHI 2012 the ACM Conference on Human Factors in Computing Systems. p.
  1843-1852.  | 
 
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   120.  | 
  
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   Navkar
  Samdaria, Akhil Mathur, Ravin Balakrishnan. (2012).
  Paying in kind for crowdsourced work in developing regions. Proceedings of the Pervasive 2012
  Conference. p. 343-360.  | 
 
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   119.  | 
  
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   Jian Zhao, Fanny Chevalier, Christopher Collins, Ravin
  Balakrishnan. (2012). Facilitating discourse analysis with interactive
  visualization. IEEE Transactions on
  Visualization and Computer Graphics. 18(12). p. 2639-2648.  | 
 
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   118.  | 
  
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   Dustin Freeman, Ravin Balakrishnan. (2011). Tangible actions. Proceedings of ITS 2011 the ACM
  International Conference on Interactive Tabletops and Surface. p. 87-96.  | 
 
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   117.  | 
  
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   Yannick Thiel, Karan Singh, Ravin Balakrishnan. (2011). Elasticurves: Exploiting stroke dynamics and inertia for
  the real-time neatening of sketched 2D curves. Proceedings of UIST 2011 the ACM Symposium
  on User Interface Software and Technology. p. 383-392.  | 
 
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   116.  | 
  
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   Jian Zhao, Fanny Chevalier, Emmanuel Pietriga,
  Ravin Balakrishnan. (2011). Exploratory
  analysis of time-series with ChronoLenses. IEEE Transactions on Visualization and
  Computer Graphics, 17(12). p. 2422-2431.  | 
 
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   115.  | 
  
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   Sajad
  Shirali-Shahreza, Yashar Ganjali,
  Ravin Balakrishnan. (2011). Verifying
  human users in speech-based interactions. Proceedings of the Annual
  Conference of the International Speech Communication Association
  (INTERSPEECH). p. 1585-1588.  | 
 
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   114.  | 
  
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   Akhil
  Mathur, Divya Ramachandran, Ed Cutrell, Ravin
  Balakrishnan. (2011). An
  exploratory study on the use of camera phones and pico
  projectors in rural India. Proceedings
  of MobileHCI 2011. p. 347-356.  | 
 
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   113.  | 
  
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   Mohit
  Jain, Jeremy Birnholtz, Ed Cutrell,
  Ravin Balakrishnan. (2011). Exploring
  display techniques for mobile collaborative learning in developing regions.
  Proceedings of MobileHCI
  2011. p. 81-90.  | 
 
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   112.  | 
  
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   Jian Zhao, Fanny Chevalier, Ravin Balakrishnan. (2011). KronoMiner:
  Using multi-foci navigation for the visual exploration of time-series data.
  Proceedings of CHI 2011 the ACM Conference on Human Factors in Computing
  Systems. p. 1737-1746.   | 
 
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   111.  | 
  
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   Chun Yu, Yuanchun Shi, Ravin
  Balakrishnan, Xiangliang Meng, Yue Suo, Mingming Fan, Yongqiang Qin.
  (2010). The satellite cursor:
  achieving MAGIC pointing without gaze tracking using multiple cursors. Proceedings of UIST 2010 the ACM Symposium
  on User Interface Software and Technology. p. 163-172.   | 
 
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   110.  | 
  
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   Daniel
  Vogel, Ravin Balakrishnan. (2010). Direct pen interaction with a
  conventional graphical user interface. Human-Computer Interaction.
  1532-7051, Volume 25, Issue 4. p.
  324 388.  | 
 
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   109.  | 
  
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   Jeremy Birnholtz, Abhishek Ranjan, Ravin Balakrishnan. (2010). Providing dynamic visual
  information for collaborative tasks: Experiments with automatic camera
  control. Human-Computer Interaction. 1532-7051, Volume 25, Issue 3. p.
  261 287.  | 
 
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   108.  | 
  
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   James
  Scott, Shahram Izadi, Leila Rezai, Dominika Ruszkowski, Xiaojun Bi, Ravin
  Balakrishnan. (2010). RearType: Text entry using keys on the back of a device.
  Proceedings of MobileHCI. p. 171-179.  | 
 
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   107.  | 
  
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   Abhishek
  Ranjan, Jeremy Birnholtz, Rorik
  Henrikson, Ravin Balakrishnan, Dana Lee. (2010). Automatic camera control using
  unobtrusive vision and audio tracking. Proceedings of GI 2010 the
  Graphics Interface Conference. p.
  47-54.  | 
 
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   106.  | 
  
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   Daniel Vogel,
  Ravin Balakrishnan. (2010). Occlusion-aware interfaces.
  Proceedings of CHI 2010 the ACM Conference on Human Factors in Computing
  Systems. p. 263-272. CHI 2010 Best Paper Award   | 
 
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   105.  | 
  
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   Patrick Dubroy, Ravin Balakrishnan. (2010). A study of tabbed browsing among
  Mozilla Firefox users. Proceedings of CHI 2010 the ACM Conference on
  Human Factors in Computing Systems. p. 673-682.  | 
 
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   104.  | 
  
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   Xiaojun Bi, Seok-Hyung Bae, Ravin
  Balakrishnan. (2010). Effects of interior
  bezels of tiled-monitor large displays on visual search, tunnel steering, and
  target selection. Proceedings of CHI 2010 the ACM Conference on Human
  Factors in Computing Systems. p. 65-74.  | 
 
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   103.  | 
  
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   Jennifer
  Keelan, Vera Pavri, Ravin Balakrishnan, Kumanan Wilson. (2010). An analysis of the Human Papilloma Virus
  vaccine debate on MySpace blogs. Vaccine,
  28(6). p. 1535-1540  | 
 
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   102.  | 
  
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   Saleema Amershi, Meredith Ringel Morris, Neema Moraveji, Ravin Balakrishnan, Kentaro Toyama. (2010). Multiple mouse text entry for
  single-display groupware.  Proceedings of CSCW 2010 the ACM
  Conference on Computer Supported Cooperative Work. p. 169-178.  CSCW 2010 Best Paper Honorable Mention Award   | 
 
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   101.  | 
  
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   Seok-Hyung
  Bae, Ravin Balakrishnan, Karan Singh. (2009). EverybodyLovesSketch:
  3D sketching for a broader audience. Proceedings of UIST 2009 the ACM
  Symposium on User Interface Software and Technology. p. 59-68.  | 
 
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   100.  | 
  
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   Scott Saponas, Desney Tan, Dan
  Morris, Ravin Balakrishnan, Jim Turner, James Landay.
  (2009). Enabling always-available input
  with muscle-computer interfaces. Proceedings of UIST 2009 the ACM
  Symposium on User Interface Software and Technology. p. 167-176.  | 
 
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   99.  | 
  
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   Gerry Chu,
  Tomer Moscovich, Ravin Balakrishnan (2009). Haptic conviction widgets.
  Proceedings of GI 2009 -- the Graphics Interface Conference. p.
  207-210.  | 
 
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   98.  | 
  
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   Gursharan
  Singh, Leah Findlater, Kentaro Toyama, Scott
  Helmer, Rikin Gandhi, Ravin Balakrishnan. Numeric paper forms for NGOs.
  (2009). Proceedings of ICTD 2009 the IEEE/ACM International Conference on Information
  and Communication Technologies and Development. p. 406-416.  | 
 
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| 
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   97.  | 
  
      | 
  
   Gerry Chu,
  Sambit Satpathy, Kentaro Toyama, Rikin Gandhi,
  Ravin Balakrishnan. (2009). Featherweight multimedia
  for information dissemination. Proceedings of ICTD 2009 the IEEE/ACM
  International Conference on Information and Communication Technologies and
  Development. p. 337-347.  | 
 
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| 
      | 
  
   96.  | 
  
      | 
  
   Daniel
  Vogel, Matthew Cudmore, Gery Casiez,
  Ravin Balakrishnan, Liam Keliher. (2009). Hand occlusion with tablet-sized direct
  pen input. Proceedings of CHI 2009 the ACM Conference on Human Factors
  in Computing Systems. p. 557-566.  | 
 
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   95.  | 
  
      | 
  
   Xiaojun Bi, Ravin Balakrishnan. (2009).
  Comparing usage of a large
  high-resolution display to single or dual desktop displays for daily work.
  Proceedings of CHI 2009 the ACM Conference on Human Factors in Computing
  Systems. p. 1005-1014.  | 
 
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   94.  | 
  
      | 
  
   Clifton Forlines, Ravin Balakrishnan.
  (2009). Improving
  visual search with image segmentation. Proceedings of CHI 2009 the ACM
  Conference on Human Factors in Computing Systems. p. 1093-1102. CHI 2009 Best Paper Nominee  | 
 
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   93.  | 
  
      | 
  
   Leah Findlater, Ravin Balakrishnan, Kentaro Toyama. (2009). Comparing semiliterate and illiterate
  users' ability to transition from audio+text to
  text-only interaction. Proceedings of CHI 2009 the ACM Conference on
  Human Factors in Computing Systems. p. 1751-1760.  | 
 
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| 
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   92.  | 
  
      | 
  
   Ken Hinckley, Morgan Dixon, Raman Sarin, Francois Guimbretiere, Ravin Balakrishnan. (2009). Codex: A dual screen computer. Proceedings
  of CHI 2009 the ACM Conference on Human Factors in Computing Systems. p.
  1933-1942.  | 
 
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      | 
  
   91.  | 
  
      | 
  
   Neema Moraveji,
  Kori Inkpen, Ed Cutrell, Ravin
  Balakrishnan. (2009). A mischief of
  mice: Examining children s performance in single display groupware systems
  with 1 to 32 mice. Proceedings of CHI 2009 the ACM Conference on Human
  Factors in Computing Systems. p. 2157-2166.  | 
 
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| 
      | 
  
   90.  | 
  
      | 
  
   Xiang Cao,
  Michael Massimi, Ravin Balakrishnan. (2008). Flashlight Jigsaw: An exploratory
  study of an ad-hoc multi-player game on public displays. To appear in the
  Proceedings of CSCW 2008 the ACM Conference on Computer Supported
  Cooperative Work. p. 77-86  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   89.  | 
  
      | 
  
   Hrvoje Benko, Andrew Wilson, Ravin
  Balakrishnan. (2008). Sphere:
  Multi-touch interactions on a spherical display. Proceedings of UIST
  2008 the ACM Symposium on User Interface Software and Technology. p.
  77-86.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   88.  | 
  
      | 
  
   Xiaojun Bi, Tomer Moscovich,
  Gonzalo Ramos, Ravin Balakrishnan, Ken Hinckley. (2008). An exploration of pen rolling for
  pen-based interaction. Proceedings of UIST 2008 the ACM Symposium on
  User Interface Software and Technology. p. 191-200.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   87.  | 
  
      | 
  
   Seok-Hyung
  Bae, Ravin Balakrishnan, Karan Singh. (2008). ILoveSketch:
  As-natural-as-possible sketching system for creating 3D curve models. Proceedings
  of UIST 2008 the ACM Symposium on User Interface Software and Technology.
  p. 151-160.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   86.  | 
  
      | 
  
   Xiang Cao,
  Andrew Wilson, Ravin Balakrishnan, Ken Hinckley, Scott E. Hudson. (2008). ShapeTouch:
  Leveraging contact shape on interactive surfaces. Proceedings of
  TABLETOP 2008 the IEEE International Workshop on Horizontal Interactive Human
  Computer Systems. p. 139-146.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   85.  | 
  
      | 
  
   Archana
  Prasad, Indrani Medhi, Kentaro Toyama, Ravin Balakrishnan. (2008). Exploring the feasibility of video mail
  for illiterate users. Proceedings of AVI 2008 - the Conference on
  Advanced Visual Interfaces. p. 103-110.  | 
 
| 
   | 
  
   | 
  
   | 
  
   | 
 
| 
      | 
  
   84.  | 
  
      | 
  
   Ryan
  Schmidt, Karan Singh, Ravin Balakrishnan. (2008). Sketching and composing
  widgets for 3D manipulation. Computer Graphics Forum, 27(2) --
  Proceedings of Eurographics Conference. p.
  301-310.  | 
 
| 
   | 
  
   | 
  
   | 
  
   | 
 
| 
      | 
  
   83.  | 
  
      | 
  
   Scott Saponas, Desney Tan, Dan
  Morris, Ravin Balakrishnan. (2008). Demonstrating
  the feasibility of using forearm electromyography for muscle-computer
  interfaces. Proceedings of CHI 2008 the ACM Conference on Human
  Factors in Computing Systems. p. 515-524.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   82.  | 
  
      | 
  
   Xiang Cao, Jacky Jie Li, Ravin Balakrishnan. (2008). Peephole pointing: Modeling
  acquisition of dynamically revealed targets. Proceedings of CHI 2008
  the ACM Conference on Human Factors in Computing Systems. p. 1699-1708. CHI 2008 Best Paper Nominee  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   81.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan. (2008). Collaborative interaction
  with volumetric displays. Proceedings of CHI 2008 the ACM Conference
  on Human Factors in Computing Systems. p. 383-392.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   80.  | 
  
      | 
  
   Clifton Forlines, Ravin Balakrishnan. (2008). Evaluating tactile feedback and
  direct vs. indirect stylus input in pointing and crossing selection tasks.
  Proceedings of CHI 2008 the ACM Conference on Human Factors in Computing
  Systems. p. 1563-1572.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   79.  | 
  
      | 
  
   Abhishek Ranjan, Jeremy Birnholtz,
  Ravin Balakrishnan. (2008). Improving meeting capture by
  applying television production principles with audio and motion detection.
  Proceedings of CHI 2008 the ACM Conference on Human Factors in Computing
  Systems. p. 227-238.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   78.  | 
  
      | 
  
   Pierre Dragicevic, Gonzalo Ramos,
  Jacobo Bibliowicz, Derek Nowrouzezahrai,
  Ravin Balakrishnan, Karan Singh. (2008). Video browsing by direct
  manipulation. Proceedings of CHI 2008 the ACM Conference on Human
  Factors in Computing Systems. p. 237-246.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   77.  | 
  
      | 
  
   G
  ry
  Casiez,
  Daniel Vogel, Ravin Balakrishnan, Andy Cockburn. (2008). The impact of control-display gain on user
  performance in pointing tasks. Human Computer Interaction, 23(3). p.
  215-250.  | 
 
| 
      | 
  
      | 
  ||
| 
      | 
  
   76.  | 
  
      | 
  
   Xiang Cao,
  Clifton Forlines, Ravin Balakrishnan. (2007). Multi-user interaction
  using handheld projectors. Proceedings of UIST 2007 the ACM Symposium
  on User Interface Software and Technology. p. 43-52.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   75.  | 
  
      | 
  
   Shengdong
  Zhao, Pierre Dragicevic, Mark Chignell, Ravin Balakrishnan,
  Patrick Baudisch. (2007). earPod: Eyes-free
  menu selection using touch input and reactive audio feedback. Proceedings
  of CHI 2007 the ACM Conference on Human Factors in Computing Systems. p.
  1395-1404. Selected press coverage (local cache): MIT Technology Review, May 2007.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   74.  | 
  
      | 
  
   Clifton Forlines, Chia Shen, Daniel Wigdor,
  Ravin Balakrishnan. (2007). Direct-touch
  vs. mouse input for tabletop displays. Proceedings of CHI 2007 the ACM
  Conference on Human Factors in Computing Systems. p. 647-656.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   73.  | 
  
      | 
  
   Gonzalo Ramos, Ravin Balakrishnan. (2007). Pressure marks. Proceedings of
  CHI 2007 the ACM Conference on Human Factors in Computing Systems. p.
  1375-1384.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   72.  | 
  
      | 
  
   Gonzalo Ramos, Andy Cockburn, Ravin Balakrishnan, Michel Beaudoiun-Lafon. (2007). Pointing lenses: facilitating stylus
  input through visual-and motor-space magnification. Proceedings of CHI
  2007 the ACM Conference on Human Factors in Computing Systems. p.
  757-766.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   71.  | 
  
      | 
  
   Abhishek
  Ranjan, Jeremy Birnholtz, Ravin Balakrishnan.
  (2007). Dynamic shared visual spaces:
  Experimenting with automatic camera control in a remote repair task. Proceedings
  of CHI 2007 the ACM Conference on Human Factors in Computing Systems. p.
  1177-1186.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   70.  | 
  
      | 
  
   Daniel Wigdor, Chia Shen, Clifton Forlines,
  Ravin Balakrishnan. (2007). Perception
  of elementary graphical elements in tabletop and multi-surface environments.
  Proceedings of CHI 2007 the ACM Conference on Human Factors in Computing
  Systems. p. 473-482.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   69.  | 
  
      | 
  
   Jeremy Birnholtz, Tovi Grossman,
  Clarissa Mak, Ravin Balakrishnan. (2007). An exploratory study of input
  configuration and group process in a negotiation task using a large display.
  Proceedings of CHI 2007 the ACM Conference on Human Factors in Computing
  Systems. p. 91-100  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   68.  | 
  
      | 
  
   Tovi Grossman, Nicholas Kong, Ravin
  Balakrishnan. (2007). Modeling
  pointing at targets of arbitrary shapes. Proceedings of CHI 2007 the
  ACM Conference on Human Factors in Computing Systems. p. 463-472.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   67.  | 
  
      | 
  
   Tovi Grossman, Daniel Wigdor, Ravin Balakrishnan. (2007). Exploring and reducing the
  effects of orientation on text readability in volumetric displays. Proceedings
  of CHI 2007 the ACM Conference on Human Factors in Computing Systems. p.
  483-492.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   66.  | 
  
      | 
  
   Tovi Grossman, Pierre Dragicevic, Ravin Balakrishnan. (2007). Strategies for accelerating on-line
  learning of hotkeys. Proceedings of CHI 2007 the ACM Conference on
  Human Factors in Computing Systems. p. 1591-1600.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   65.  | 
  
      | 
  
   Jia Sheng,
  Ravin Balakrishnan, Karan Singh. (2006). An interface for 3D sculpting
  via physical proxy. Proceedings of GRAPHITE 2006 International
  Conference on Computer Graphics and Interactive Techniques in Australasia and
  Southeast Asia. p. 213-220.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   64.  | 
  
      | 
  
   Abhishek Ranjan,
  Jeremy Birnholtz, Ravin Balakrishnan. (2006). An exploratory analysis of partner
  action and camera control in a video-mediated collaborative task. Proceedings
  of CSCW 2006 the ACM Conference on Computer Supported Cooperative Work.
  p. 403-412. CSCW 2006 Best Paper Honorable Mention Award   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   63.  | 
  
      | 
  
   Clifton Forlines, Chia Shen, Daniel Wigdor,
  Ravin Balakrishnan. (2006). Exploring
  the effects of group size and display configuration on visual search. Proceedings
  of CSCW 2006 the ACM Conference on Computer Supported Cooperative Work.
  p. 11-20.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   62.  | 
  
      | 
  
   Xiang Cao,
  Ravin Balakrishnan. (2006). Interacting
  with dynamically defined information spaces using a handheld projector and a
  pen. Proceedings of UIST 2006 the ACM Symposium on User Interface
  Software and Technology. p. 225-234.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   61.  | 
  
      | 
  
   Daniel Wigdor, Darren Leigh, Clifton Forlines,
  Samuel Shipman, John Barnwell, Ravin Balakrishnan, Chia Shen. (2006). Under the table interaction. Proceedings
  of UIST 2006 the ACM Symposium on User Interface Software and Technology.
  p. 259-268  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   60.  | 
  
      | 
  
   Anastasia Bezerianos, Pierre Dragicevic, Ravin Balakrishnan. (2006). Mnemonic rendering: An
  image-based approach for exposing hidden changes in dynamic displays. Proceedings
  of UIST 2006 the ACM Symposium on User Interface Software and Technology.
  p. 159-168. UIST 2006 Best Student Paper Award One of 3 papers invited to a UIST reprise session
  at ACM SIGGRAPH 2007  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   59.  | 
  
      | 
  
   Tovi Grossman, Ravin Balakrishnan.
  (2006). The design and
  evaluation of selection techniques for 3d volumetric displays. Proceedings
  of UIST 2006 the ACM Symposium on User Interface Software and Technology.
  p. 3-12.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   58.  | 
  
      | 
  
   Clifton Forlines, Daniel Vogel, Ravin Balakrishnan. (2006). HybridPointing:
  Fluid switching between absolute and relative pointing with a direct input
  device. Proceedings of UIST 2006 the ACM Symposium on User Interface
  Software and Technology. p. 211-220.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   57.  | 
  
      | 
  
   Tovi Grossman, Ravin Balakrishnan.
  (2006). An evaluation
  of depth perception on volumetric displays. Proceedings of AVI 2006 -
  the Conference on Advanced Visual Interfaces. p. 193-200.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   56.  | 
  
      | 
  
   Daniel Wigdor, Chia Shen, Clifton Forlines, Ravin Balakrishnan. (2006). Table-centric interactive
  spaces for real-time collaboration. Proceedings of AVI 2006 the
  Conference on Advanced Visual Interfaces. p. 103-107.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   55.  | 
  
      | 
  
   Anand
  Agarawala, Ravin Balakrishnan. (2006). Keepin' it real:
  Pushing the desktop metaphor with physics, piles and the pen. Proceedings
  of CHI 2006 - the ACM Conference on Human Factors in Computing Systems.
  p. 1283-1292. video. This was the most viewed
  science & technology video
  on YouTube, ever (with over 3.3M views as of May 2009). 20 second "CHI
  Madness" hip-hop summary video Selected press coverage (local cache): CBC, June 2006, Digital Image Fest, June 2006 
  (video) Anand's TED
  Talk This work is was
  productized as BumpTop.
  The company was acquired by Google in 2010.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   54.  | 
  
      | 
  
   Daniel Wigdor, Chia Shen, Clifton Forlines,
  Ravin Balakrishnan. (2006). Effects
  of display position and control space orientation on user preference and
  performance. Proceedings of CHI 2006 - the ACM Conference on Human
  Factors in Computing Systems. p. 309-318.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   53.  | 
  
      | 
  
   Tovi
  Grossman, Ken Hinckley, Patrick Baudisch, Maneesh Agrawala, Ravin Balakrishnan. (2006). Hover widgets: Using the tracking state
  to extend the capabilities of pen-operated devices. Proceedings of CHI
  2006 - the ACM Conference on Human Factors in Computing Systems. p.
  861-870.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   52.  | 
  
      | 
  
   Abhishek
  Ranjan, Ravin Balakrishnan, Mark Chignell. (2006). Searching in audio: The utility of
  transcripts, dichotic presentation, and time-compression. Proceedings
  of CHI 2006 - the ACM Conference on Human Factors in Computing Systems. p.
  721-730.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   51.  | 
  
      | 
  
   Michael Wu, Chia Shen, Kathy Ryall, Clifton Forlines,
  Ravin Balakrishnan. (2006). Gesture
  registration, relaxation, and reuse for multi-point direct-touch surfaces.
  Proceedings of TableTop 2006 - the IEEE International
  Workshop on Horizontal Interactive Human Computer Systems. p. 183.190.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   50.  | 
  
      | 
  
   Daniel
  Vogel, Ravin Balakrishnan. (2005). Distant freehand pointing and
  clicking on very large high resolution displays.
  Proceedings of UIST 2005 - the ACM Symposium on User Interface Software
  and Technology. p. 33-42.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   49.  | 
  
      | 
  
   Shahzad
  Malik, Abhishek Ranjan, Ravin Balakrishnan. (2005). Interacting with large displays from a
  distance with vision-tracked multi-finger gestural input. Proceedings
  of UIST 2005 - the ACM Symposium on User Interface Software and Technology. p.
  43-52. One of 3 papers invited to a UIST reprise session
  at ACM SIGGRAPH 2006  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   48.  | 
  
      | 
  
   Gonzalo
  Ramos, Ravin Balakrishnan. (2005). Zliding: Fluid zooming and sliding for high precision
  parameter manipulation. Proceedings of UIST 2005 - the ACM Symposium
  on User Interface Software and Technology. p. 143-152.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   47.  | 
  
      | 
  
   Clifton Forlines, Ravin Balakrishnan, Paul Beardsley, Jeroen van Baar, Ramesh Raskar. (2005). Zoom-and-Pick: Facilitating visual
  zooming and precision pointing with interactive handheld projectors. Proceedings
  of UIST 2005 - the ACM Symposium on User Interface Software and Technology. p.
  73-82.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   46.  | 
  
      | 
  
   Michael
  McGuffin, Ravin Balakrishnan. (2005). Interactive visualization of
  genealogical graphs. Proceedings of InfoVis
  2005 the IEEE Symposium on Information Visualization. p. 17-24.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   45.  | 
  
      | 
  
   Theophanis Tsandilas,
  Ravin Balakrishnan. (2005). An evaluation
  of techniques for reducing spatial interference in single display groupware.
  Proceedings of ECSCW 2005 - the European Conference on Computer Supported
  Cooperative Work. p. 221-240.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   44.  | 
  
      | 
  
   Daniel Wigdor, Ravin Balakrishnan. (2005). Empirical investigation into the
  effect of orientation on text readability in tabletop displays. Proceedings
  of ECSCW 2005 - the European Conference on Computer Supported Cooperative
  Work. p. 205-224.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   43.  | 
  
      | 
  
   Anastasia Bezerianos, Ravin Balakrishan.
  (2005). Canvas Portals: View
  and space management on large displays. IEEE Computer Graphics and
  Applications, 25(4). p. 34-43  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   42.  | 
  
      | 
  
   Michael
  McGuffin, Ravin Balakrishnan. (2005). Fitts'
  law and expanding targets: Experimental studies and designs for user
  interfaces. ACM Transactions on Computer-Human Interaction, 12(4).
  p. 388-422.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   41.  | 
  
      | 
  
   Xiang Cao, Ravin Balakrishnan. (2005). Evaluation of an online adaptive
  gesture interface with command prediction. Proceedings of GI 2005 the
  Graphics Interface Conference. p. 187-194. GI 2005 Best Student Paper Award  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   40.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan. (2005). The Bubble Cursor: Enhancing target acquisition
  by dynamic resizing of the cursor s activation area. Proceedings of
  CHI 2005 the ACM Conference on Human Factors in Computing Systems. p.
  281-290. CHI 2005 Best Paper Award  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   39.  | 
  
      | 
  
   Anastasia Bezerianos, Ravin
  Balakrishnan. (2005). The Vacuum:
  Facilitating the manipulation of distant objects. Proceedings of CHI
  2005 the ACM Conference on Human Factors in Computing Systems. p.
  361-370.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   38.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan. (2005). A probabilistic approach to
  modeling two-dimensional pointing. ACM Transactions on Computer-Human
  Interaction,12(3). p. 435-459.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   37.  | 
  
      | 
  
   Ravin
  Balakrishnan. (2004). "Beating"
  Fitts' law: Virtual enhancements for pointing
  facilitation. International Journal of Human-Computer Studies, 61(6). p.
  857-874.  | 
 
| 
      | 
  
   36.  | 
  
      | 
  
   Tovi
  Grossman, Daniel Wigdor, Ravin Balakrishnan.
  (2004). Multi-finger gestural
  interaction with 3-D volumetric displays. Proceedings of UIST 2004 the
  ACM Symposium on User Interface Software and Technology. p. 61-70. UIST 2004 Best Paper Award One of 3 papers invited to a UIST reprise session
  at ACM SIGGRAPH 2005 Selected press coverage (local cache): MIT Tech Review, Feb 2005, Toronto Star, 20 Jan 2003  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   35.  | 
  
      | 
  
   Daniel Vogel, Ravin Balakrishnan. (2004). Interactive public ambient displays:
  transitioning from implicit to explicit, public to personal, interaction with
  multiple users. Proceedings of UIST 2004 the ACM Symposium on User
  Interface Software and Technology. p. 137-146.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   34.  | 
  
      | 
  
   Shengdong
  Zhao, Ravin Balakrishnan. (2004). Simple
  vs. compound mark hierarchical marking menus. Proceedings of UIST 2004
  the ACM Symposium on User Interface Software and Technology. p. 33-42.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   33.  | 
  
      | 
  
   Karan Singh, Ravin Balakrishnan. (2004). Visualizing 3D scenes
  using non-linear projections and data mining of previous camera movements.
  Proceedings of Afrigraph 2004 the ACM African
  Graphics Conference. p. 41-48.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   32.  | 
  
      | 
  
   Michael McGuffin, Gord Davison, Ravin Balakrishnan. (2004). Expand-ahead: A space-filling
  strategy for browsing trees. Proceedings of InfoVis
  2004 the IEEE Symposium on Information Visualization. p. 119-126.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   31.  | 
  
      | 
  
   Wael Aboelsaadat, Ravin Balakrishnan.
  (2004). An empirical comparison of
  transparency on one and two layer displays. Proceedings
  of HCI 2004 the British HCI Conference. p. 53-67.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   30.  | 
  
      | 
  
   Michael Tsang, Nigel Morris, Ravin Balakrishnan. (2004). Temporal thumbnails: rapid
  visualization of time-based viewing data. Proceedings of AVI 2004 the
  Conference on Advanced Visual Interfaces. p. 175-178.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   29.  | 
  
      | 
  
   Steven Tsang, Ravin Balakrishnan, Karan Singh, Abhishek Ranjan.
  (2004). A suggestive
  interface for image guided 3D sketching. Proceedings of CHI 2004 the
  ACM Conference on Human Factors in Computing Systems. p. 591-598.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   28.  | 
  
      | 
  
   Gonzalo Ramos, Matthew Boulos, Ravin Balakrishnan. (2004). Pressure widgets. Proceedings
  of CHI 2004 the ACM Conference on Human Factors in Computing Systems. p.
  487-494. Selected press coverage (local cache): MIT Tech Review, June 2004  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   27.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan. (2004). Pointing at trivariate
  targets in 3D environments. Proceedings of CHI 2004 the ACM Conference
  on Human Factors in Computing Systems. p. 447-454.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   26.  | 
  
      | 
  
   Daniel Wigdor, Ravin Balakrishnan.
  (2004). A comparison of
  consecutive and concurrent input text entry techniques for mobile phones.
  Proceedings of CHI 2004 the ACM Conference on Human Factors in Computing
  Systems. p. 81-88.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   25.  | 
  
      | 
  
   Michael Wu, Ravin Balakrishnan. (2003). Multi-finger and whole hand gestural
  interaction techniques for multi-user tabletop displays. Proceedings
  of UIST 2003 the ACM Symposium on User Interface Software and Technology. p.
  193-202.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   24.  | 
  
      | 
  
   Daniel Wigdor, Ravin Balakrishnan.
  (2003). TiltText:
  Using tilt for text input to mobile phones. Proceedings of UIST 2003 ACM
  Symposium on User Interface Software and Technology. p. 81-90.  Selected press coverage (local cache): MIT Tech Review, Nov 2003  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   23.  | 
  
      | 
  
   Gonzalo Ramos, Ravin Balakrishnan. (2003). Fluid interaction techniques for
  the control and annotation of digital video. Proceedings of UIST 2003
  the ACM Symposium on User Interface Software and Technology. p. 105-114.
   Selected press coverage (local cache): Varsity, 4 Nov 2002  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   22.  | 
  
      | 
  
   Xiang Cao, Ravin Balakrishnan. (2003). VisionWand:
  Interaction techniques for large displays using a passive wand tracked in 3D.
  Proceedings of UIST 2003 the ACM Symposium on User Interface Software and
  Technology. p. 173-182.  One of 3 papers invited to a "Best of
  UIST" reprise session at ACM SIGGRAPH 2004  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   21.  | 
  
      | 
  
   Michael McGuffin, Liviu Tancau, Ravin Balakrishnan. (2003). Using deformations for
  browsing volumetric data. Proceedings of Vis 2003 the IEEE
  Visualization Conference. p. 401-408. 4min
  video demonstrating key aspects of the research complete
  8min video demonstrating all the techniques developed in the research  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   20.  | 
  
      | 
  
   George W.
  Fitzmaurice, Azam Khan, William Buxton, Gordon Kurtenbach, Ravin
  Balakrishnan. (2003). Sentient
  data access via a diverse society of devices. ACM Queue, November 2003.
  p. 53-62.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   19.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan, Karan Singh. (2003). An interface for creating and
  manipulating curves using a high degree-of-freedom input device.
  Proceedings of CHI 2003 the ACM Conference on Human Factors in Computing
  Systems. p. 185-192. 3min video
  demonstrating basic aspects of the research system complete
  15min video demonstrating the entire research system Selected press coverage (local cache): UofT News 14 Apr 2003, NewsFactor 21
  Apr 2003, Varsity, 24 Sep 2002  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   18.  | 
  
      | 
  
   Nicholas Burtnyk, Azam Khan, George W.
  Fitzmaurice, Ravin Balakrishnan, Gordon Kurtenbach. (2002). StyleCam:
  Interactive stylized 3D navigation using integrated spatial and temporal
  controls. Proceedings of UIST 2002 the ACM Symposium on User Interface
  Software and Technology. p. 101-110.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   17.  | 
  
      | 
  
   Michael McGuffin, Ravin Balakrishnan. (2002). Acquisition of expanding targets.
  Proceedings of CHI 2002 the ACM Conference on Human Factors in Computing
  Systems. p. 57-64.  demo of prototypes (java
  applets)  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   16.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan, Gordon Kurtenbach, George W. Fitzmaurice, Azam
  Khan, William Buxton. (2002). Creating
  principal 3D curves with digital tape drawing. Proceedings of CHI 2002
  the ACM Conference on Human Factors in Computing Systems. p. 121-128.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   15.  | 
  
      | 
  
   Tovi
  Grossman, Ravin Balakrishnan, Gordon Kurtenbach, George W. Fitzmaurice, Azam
  Khan, William Buxton. (2001). Interaction techniques
  for 3D modeling on large displays. Proceedings of I3D 2001 the ACM
  Symposium on Interactive 3D Graphics. p. 17-23.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   14.  | 
  
      | 
  
   Ravin Balakrishnan, George W. Fitzmaurice, Gordon Kurtenbach.
  (2001). User interfaces
  for volumetric displays. IEEE Computer, March 2001. p. 37-45.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   13.  | 
  
      | 
  
   William Buxton, George W. Fitzmaurice, Ravin Balakrishnan,
  Gordon Kurtenbach. (2000). Large
  displays in automotive design. IEEE Computer Graphics and
  Applications, 2(4). p. 68-75.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   12.  | 
  
      | 
  
   Ravin Balakrishnan, Ken Hinckley. (2000). Symmetric bimanual interaction.
  Proceedings of CHI 2000 the ACM Conference on Human Factors in Computing
  Systems. p. 33-40.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   11.  | 
  
      | 
  
   George W. Fitzmaurice, Ravin Balakrishnan, Gordon Kurtenbach.
  (1999). Sampling, synthesis, and input
  devices. Communications of the ACM, August 1999, 42(8). p. 54-63.  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   10.  | 
  
      | 
  
   Ravin Balakrishnan, Ken Hinckley. (1999). The role of kinesthetic reference
  frames in two-handed input performance. Proceedings of UIST 1999 the
  ACM Symposium on User Interface Software and Technology. p. 171-178.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   9.  | 
  
      | 
  
   Ravin Balakrishnan, George W. Fitzmaurice, Gordon Kurtenbach,
  William Buxton. (1999). Digital tape
  drawing. Proceedings of UIST 1999 the ACM Symposium on User Interface
  Software and Technology. p. 161-169.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   8.  | 
  
      | 
  
   Ravin Balakrishnan, Gordon Kurtenbach. (1999). Exploring bimanual camera control and object
  manipulation in 3D graphics interfaces. Proceedings of CHI 1999 the
  ACM Conference on Human Factors in Computing Systems. p. 53-63.  video demonstrating an
  example bimanual camera control and painting/sculpting interface (Azam Khan,
  Gordon Kurtenbach, Ravin Balakrishnan, Bill Buxton) additional video
  (Azam Khan, Gordon Kurtenbach, Ravin Balakrishnan, Bill Buxton)  | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   7.  | 
  
      | 
  
   George W. Fitzmaurice, Ravin Balakrishnan, Gordon Kurtenbach,
  William Buxton. (1999). An exploration into
  supporting artwork orientation in the user interface. Proceedings of
  CHI 1999 the ACM Conference on Human Factors in Computing Systems. p.
  167-174.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   6.  | 
  
      | 
  
   Ravin Balakrishnan, George W. Fitzmaurice, Gordon Kurtenbach,
  Karan Singh. (1999). Exploring
  interactive curve and surface manipulation using a bend and twist sensitive
  input strip. Proceedings of I3D 1999 the ACM Symposium on Interactive
  3D Graphics. p. 111-118.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   5.  | 
  
      | 
  
   Ravin Balakrishnan, Pranay Patel. (1998). The PadMouse:
  Facilitating selection and spatial positioning for the non-dominant hand.
  Proceedings of CHI 1998 the ACM Conference on Human Factors in Computing
  Systems. p. 9-16.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   4.  | 
  
      | 
  
   Ravin Balakrishnan, Thomas Baudel,
  Gordon Kurtenbach, George W. Fitzmaurice. (1997). The Rockin'Mouse:
  Integral 3D manipulation on a plane. Proceedings of CHI 1997 the
  ACM Conference on Human Factors in Computing Systems. p. 311-318.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   3.  | 
  
      | 
  
   Ravin Balakrishnan, I. Scott MacKenzie.
  (1997). Performance differences in the
  fingers, wrist, and forearm in computer input control. Proceedings of
  CHI 1997 the ACM Conference on Human Factors in Computing Systems. p.
  303-310.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   2.  | 
  
      | 
  
   Colin Ware, Ravin Balakrishnan. (1994). Target acquisition in
  fishtank VR: The effects of lag and frame rate. Proceedings of GI 1994 the
  Graphics Interface Conference. p. 1-7.   | 
 
| 
      | 
  
      | 
  
      | 
  
      | 
 
| 
      | 
  
   1.  | 
  
      | 
  
   Colin Ware, Ravin Balakrishnan. (1994). Reaching for objects in VR displays: Lag and
  frame rate. ACM Transactions on Computer-Human Interaction, 1(4). p.
  331-356.   | 
 
Jeremy Birnholtz, Abhishek Ranjan, Ravin
Balakrishnan. (2008). Error and
coupling: Extending common ground to improve the provision of visual
information for collaborative tasks. Conference of the
International Communication Association, Montreal, Canada, May 22-26, 2008.
 
Jeremy Birnholtz, Abhishek Ranjan, Ravin
Balakrishnan. (2007). Using
motion tracking data to augment video recordings in experimental social science
research. Proceedings of the Third International Conference on e-Social
Science. 
 
Igor Mordatch, Patrick Coleman, Karan Singh,
Ravin Balakrishnan. (2007). Interface
techinques for 3D control of spatial keyframing. Poster
in ACM SIGGRAPH Conference.
 
Daniel Wigdor, Chia Shen, Clifton Forlines, Ravin Balakrishnan. (2006). Table-centric interactive
spaces for real-time collaboration: a video demonstration. Video Proceedings
of CSCW 2006 the ACM Conference on Computer Supported Cooperative Work. 
 
Daniel Wigdor, Chia Shen, Clifton Forlines, Ravin Balakrishnan. (2006). Table-centric interactive
spaces for real-time collaboration: Solutions, evaluation, and application
scenarios. Proceedings of CollabTech 2006.
Gonzalo
Ramos, Ravin Balakrishnan. (2004). Visual
features and interference in pressure widgets. Technical Report, DGP
Lab, University of Toronto, DGP-TR-2004-003.
Anastasia
Bezerianos, Ravin Balakrishnan. (2004). Interaction and visualization techniques for
very large scale high resolution displays. Technical
Report, DGP Lab, University of Toronto, DGP-TR-2004-002.
video
Ravin
Balakrishnan. (2001). Issues in bimanual interaction for computer graphics. Ph.D.
Thesis. Department of Computer Science, University of Toronto. 
Ravin
Balakrishnan. (1997). The evolution and evaluation of a 3D input device. M.Sc.
Thesis. Department of Computer Science, University of Toronto. 
Ravin
Balakrishnan, Colin Ware, Tim Smith. (1994). Virtual handtool
with force-feedback. Extended Abstracts of CHI 1994 the ACM Conference
on Human Factors in Computing Systems. p. 83-84.
Ravin
Balakrishnan, Przemyslaw Pochec.
(1992). A testbed for surface orientation detection algorithms. APICS
Computer Science Conference. Halifax, N.S. 
CSC2604,
Topics in Human Centered and Interdisciplinary Computing, Fall 2025 (Grad).
CSC2604,
Topics in Human Centered and Interdisciplinary Computing, Fall 2023 (Grad).
CSC2524, Topics in Interactive Computing, Fall 2022 (Grad).
CSC2604, Topics
in Human Centered and Interdisciplinary Computing, Fall 2013 (Grad).
CSC2524, Topics in Interactive Computing, Winter 2013 (Grad).
CSC2524, Topics in Interactive Computing, Fall 2010 (Grad)
CSC490, Capstone Design Course, Fall 2006 (Undergrad)
CSC2524, Topics in Interactive Computing, Fall 2006 (Grad)
CSC490, Capstone Design Course, Sep 2005 - Apr 2006 (Undergrad)
CSC2524, Topics in Interactive Computing, Spring 2006 (Grad)
CSC490, Capstone Design Course, Sep 2004 - Apr 2005 (Undergrad)
CSC428/CSC2514, Human Computer Interaction, Fall 2004 (Crosslisted Grad/Undergrad)
CSC2524, Topics in Interactive Computing, Fall 2004 (Grad)
Capstone Design Course, Sep 2003 - Apr 2004 (Undergrad)
CSC428/CSC2514, Human Computer Interaction, Fall 2003 (Crosslisted Grad/Undergrad)
CSC2524, Topics in Interactive Computing, Fall 2003 (Grad)
CSC428/CSC2514, Human Computer Interaction, Fall 2002 (Crosslisted Grad/Undergrad)
CSC2524, Topics in Interactive Computing, Fall 2002 (Grad)
CSC318, The Design of Interactive Computational Media, Spring 2002
(Undergrad)
CSC428/CSC2514, Human Computer Interaction, Fall 2001 (Crosslisted Grad/Undergrad)
CSC258, Computer Organization, Summer 2000 (Undergrad)
CSC258, Computer Organization, Spring 2000 (Undergrad)
CSC258, Computer Organization, Fall 1999 (Undergrad)
CSC108, Introduction to Computer Programming, Summer 1999
(Undergrad)
CSC258, Computer Organization, Spring 1999 (Undergrad)
CSC340, Information Systems Analysis and Design, Fall 1998
(Undergrad)
CSC258, Computer Organization, Summer 1998 (Undergrad)
CSC340, Information Systems Analysis and Design, Fall 1997
(Undergrad)
CSC104, The How and Why of Computing, Spring 1997 (Undergrad)
CSC258, Computer Organization, Summer 1995 (Undergrad)
Laura Di Chen. Ph.D. 2018 ongoing. co-advised with Tovi Grossman
Priyank Chandra.
Postdoctoral fellow. 2019 2020. co-advised with Syed Ishtiaque
Ahmed
Fanny Chevalier.
Postdoctoral fellow, Jan 2012 Nov 2013. co-advised with Karan Singh and Sara
Diamond.
Thomas Pietrzak. Postdoctoral fellow, Jan 2011 - Sep 2011
William
Soukoreff. Postdoctoral fellow, May 2010 - Nov
2011.
Seok-Hyung Bae.
Postdoctoral fellow, Sep 2007 - Feb 2010. co-advised with Karan Singh.
Tomer Moscovich Postdoctoral fellow, Feb 2007-June 2008
Jeremy Birnholtz Postdoctoral fellow, Aug 2005-July 2007.
co-advised with colleagues in NECTAR.
Pierre Dragicevic Postdoctoral fellow, Feb 2006-Apr 2007.
G ry
Casiez Postdoctoral fellow, Feb-Aug 2005.
 
Jiannan Li Ph.D. 2023. co-advised with Tovi Grossman
Aakar
Gupta Ph.D. 2018
Sajad Shirali-Shahreza.
Ph.D. 2017. co-advised with Yashar Ganjali.
Rorik Henrikson Ph.D. 2016
Jian Zhao Ph.D.
2015
Dustin Freeman Ph.D.
2015
Xiaojun
Bi Ph.D. 2011
Daniel Vogel Ph.D. 2010
Clifton Forlines Ph.D. 2008
Abhishek Ranjan
Ph.D. 2008
Xiang Cao Ph.D. 2008
Tovi
Grossman Ph.D. 2008
Daniel Wigdor Ph.D. 2008
Gonzalo Ramos
Ph.D. 2008
Anastasia Bezerianos
Ph.D. 2007
Michael McGuffin
Ph.D. 2007
Laura Di Chen. M.Sc. 2018.
Rinat Abdrashitov. M.Sc. 2015. co-advised with Karan Singh.
Jonathan Deber M.Sc. 2013
Stephanie Santosa M.Sc. 2013. co-advised
with Karan Singh.
Aakar
Gupta M.Sc. 2012
Rorik Henrikson M.Sc. 2012
Navkar Samdaria M.Sc. 2012
Mohit Jain M.Sc.
2011
Akhil Mathur
M.Sc. 2011
Dominika Ruszkowski M.Sc. 2010
Dustin Freeman M.Sc.
2010
Patrick Dubroy
M.Sc. 2009
Azam Khan M.Sc.
2008
Michael Jurka M.Sc. 2008
Gerry Chu M.Sc.
2007
Tristan Campbell M.Sc. 2006
Steven Tsang M.Sc. 2006. co-advised with Karan Singh
Anand Agarawala M.Sc. 2006
Abhishek Ranjan
M.Sc. 2005
Jia Sheng M.Sc. 2005. co-advised with Karan Singh
Daniel Vogel M.Sc.
2005
Wael Aboelsaadat M.Sc. 2004
Xiang Cao M.Sc.
2004. co-advised with Allan Jepson
Tovi
Grossman M.Sc. 2004
Daniel Wigdor
M.Sc. 2004
Yan (Grace) Wang M.Sc. 2003
Michael McGuffin 
M.Sc. 2002. co-advised with Gordon Kurtenbach
 
Sameer Vohra. Undergraduate research assistant, summer 2007 (NSERC
USRA). co-advised with Tomer Moscovich
Curren Pangler. Undergraduate research assistant, summer 2007
(NSERC USRA). co-advised with Tomer Moscovich
Nicholas Kong.
Undergraduate research assistant, summer 2005, summer 2006 (NSERC USRA), summer
2007 (NSERC USRA). co-advised with Tovi Grossman
Matthew Boulos. Undergraduate research assistant, summer 2003
(NSERC USRA), summer 2004 (NSERC USRA). co-advised with Gonzalo Ramos
Vikas Jain. Undergraduate research assistant, summer 2003.
co-advised with Tovi Grossman
Jeffrey Magder. Undergraduate research
assistant, summer 2002 (NSERC USRA)
Abhishek Ranjan.
Undergraduate research assistant, summer 2002
Tovi
Grossman. Undergraduate research assistant, summer 2000, summer 2001,
summer 2002 (NSERC USRA)
ACM Transactions on Computer-Human Interaction. Associate Editor,
2010-2019.
IEEE Transactions on Visualization and Computer Graphics.
Associate Editor, 2008-2011.
ACM UIST 2009 Symposium on User Interface Software and Technology.
Sponsorship Chair
IEEE 3D User Interfaces 2009. Conference Co-Chair
ACM UIST 2008 Symposium on User Interface Software and Technology.
Sponsorship Co-Chair
Human-Computer Interaction journal. Co-guest editor of Special
Issue on Ubiquitous Multi Display Environments, Volume 24, Issues 1 & 2,
2009. (Guest Editors' Introduction)
ACM UIST 2007 Symposium on User Interface Software and Technology.
Program Chair & Sponsorship Co-Chair
Ubicomp 2005 Workshop on "The Spaces in-between: Seamful vs. Seamless Interactions". Co-organizer.
Graphics Interface 2004 Conference. Conference and Program
Co-Chair
Graphics Interface 2002 Conference. Posters and Demonstrations
Chair
International Input Research Workshop, 2000, Ribeaucourt,
France. Organizing Committee.
ACM CHI Conference on Human Factors in Computing Systems, Associate
Chair for Papers (2002, 2003, 2004, 2005, 2006, 2009, 2010, 2011, 2014, 2015) 
ACM CHI Conference on Human Factors in Computing Systems, Short
Papers Program Committee (2001)
ACM UIST Symposium on User Interface Software and Technology,
Papers Program Committee (2003, 2004, 2005, 2006, 2010, 2015)
ACM SIGGRAPH Conference on Computer Graphics and Interactive
Techniques (2010)
International Projector-Camera Systems Workshop (PROCAMS), Program
Committee (2008, 2009).
ACM SIGGRAPH International Conference on Virtual-Reality Continuum
and its Applications in Industry (VRCAI), Program Committee (2008).
International Conference on Intelligent User Interfaces (IUI), Workshop on
Intelligent User Interfaces for Developing Regions, Program Committee (2008).
Graphics Interface Conference, Papers Program Committee (2002)
ACM VRST Symposium on Virtual Reality Software and Technology,
Papers Program Committee (2003)
IEEE InfoVis Symposium on Information
Visualization, Papers Program Committee (2006)
ACM I3D Symposium on Interactive 3D Graphics and Games, Papers
Program Committee (2006)
NordiCHI
Conference, Papers Program Committee (2004)
8th Eurographics Workshop on Virtual
Environments, Barcelona, Spain, Papers Program Committee (2002)