SCN

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Project Summary

Smart camera networks (SCNs) merge computer vision, distributed processing, and sensor network disciplines to solve problems in multi-camera applications by providing valuable information through distributed sensing and collaborative in-network processing. Collaboration in sensor networks is necessary not only to compensate for the processing, sensing, energy, and bandwidth limitations of each sensor node but also to improve the accuracy and robustness of the network. Collaborative processing in SCNs is more challenging than in conventional scalar sensor networks (SSNs) because of three unique features of cameras, including the extremely higher data rate, the directional sensing characteristics with limited field of view (FOV), and the existence of visual occlusion. An integrated research is carried out to tackle the unique challenges presented by SCNs where collaboration is the key. Three aspects of collaborative processing are investigated, 1) coverage estimation‚ in the presence of visual occlusions to provide adequate redundancy in sensing coverage to enable collaboration where the statistics of visual coverage blends the statistics of camera nodes and targets, 2) clustering‚ to schedule an efficient sleep-wakeup pattern among neighbor nodes formed by image comparison-based semantic neighbor selection algorithm for more efficient collaboration, and 3) distributed optimization‚ for in-network data processing that concerns how to effectively obtain robust and accurate integration results from multiple distributed sensors for challenging vision tasks like target detection, localization, and tracking in crowds.

Sponsors

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  • NSF CNS-1017156

Students

  • Jiajia Luo, Ph.D. Candidate, started Fall 2009
  • Kefa Lu, Ph.D. Candidate, started Fall 2010
  • Zhibo Wang, Ph.D. Candidate, started Spring 2011
  • Lipeng Wan, Ph.D. Candidate, started Fall 2011


  • Mahmut Karakaya, Collaborative Solutions to Visual Sensor Networks, Ph.D., Summer 2011
  • Yang Bai, Feature-based Image Comparison and Its Application in Wireless Visual Sensor Networks, Ph.D., Spring 2011
  • Daniel Martinez Capilla, Sign Language Translator Using Microsoft Kinect, M.S., Summer 2012 (Co-advised with Dr. Fabrice Meriaudeau at Univerite de Bourgogne (France) through the Erasmus Mundus program VIBOT)
  • Bryan Bodkin, Real-Time Mobile Stereo Vision, M.S., Summer 2012
  • Cheng Qian, A Distributed Solution for Visual Sensor Networks to Detect Targets in Crowds, M.S., Summer 2006
  • Chris Beall, Distributed Self-Deployment in Visual Sensor Networks, M.S., Summer 2006
  • Clay Taylor, Undergraduate Student

Publications

Journal Publications

  • J. Luo, W. Wang, H. Qi, "Feature extraction and representation for distributed multi-view human action recognition,” IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 3(2):145-154, June 2013.
  • M. Karakaya, H. Qi, "Coverage estimation for crowded targets in visual sensor networks," ACM Transactions on Sensor Networks, 8(3), July 2012.
  • Y. Bai, H. Qi, "Feature-based image comparison for semantic neighbor selection in resource-constrained visual sensor networks," Eurasip Journal on Image and Video Processing (IVP), vol. 2010, Article ID 469563, 11 pages, 2010. doi: 10.1155/2010/469563.


Conference Papers

  • L. Wan, Q. Cao, “Towards instruction level record and replay of sensor network applications,” IEEE 21st International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), San Francisco, CA, August 14-16, 2013.
  • S. Li, H. Qi, “Distributed data aggregation for sparse recovery in wireless sensor Networks,” IEEE Int. Conf. on Distributed Computing in Sensor Systems (DCOSS), Cambridge, MA, May 21-23, 2013.
  • J. Luo, H. Qi, “Motion local ternary pattern for distributed multi-view human action recognition,” 6th ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), Hong Kong, October 30-November 2, 2012.
  • M. Karakaya, H. Qi, “Communication and energy efficiency in visual sensor networks for people localization,” 3rd International Workshop on Future of Instrumentation, Gatlinburg, TN, October 8, 2012.
  • M. Karakaya, H. Qi, "Coverage estimation in heterogeneous visual sensor networks," IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS), pages 41-49, Hangzhou, China, May 16-18, 2012.
  • Z. Wang, C. Taylor, Q. Cao, H. Qi, Z. Wang, "Demo abstract: Friendbook: Privacy-preserving friend matching based on shared interests," The 9th ACM Conference on Embedded Networked Sensor Systems (SenSys), pages 397-398, Seattle, WA, November 1-4, 2011.
  • M. Karakaya, H. Qi, "Detection-based tracking for crowded targets in distributed visual sensor networks," 2nd International Workshop on Future of Instrumentation, Oak Ridge, November 2011.
  • X. Ma, S. Djouadi, Q. Cao, "LIPS: Link prediction as a service for adaptive data aggregation in wireless sensor networks," IEEE International Conference on Distributed Computing in Sensor Networks (DCOSS), Barcelona, Spain, June 27-29, 2011.
  • Q. Cao, X. Wang, H. Qi, T. He, "r-Kernel: An operating system foundation for highly reliable networked embedded systems," The 30th International Conference on Computer Communications (INFOCOM), Shanghai, China, April 10-15, 2011.
  • M. Karakaya, H.Qi, "Fault Detection, Correction, and Tolerance for Collaborative Target Localization in Visual Sensor Networks" 4th ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), Atlanta, GA, Aug 30-Sep 2, 2010.
  • J. Luo, H. Qi, "Distributed object recognition via feature unmixing," ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), 8 pages, Atlanta, GA, August 31 - September 4, 2010.
  • M. Karakaya, H.Qi, "Target Detection and Counting using a Progressive Certainty Map in Distributed Visual Sensor Networks" 3rd ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), Como, Italy, Aug 30-Sep 2, 2009. (Best Paper Award)
  • Y. Bai, H. Qi, "Redundancy removal through semantic neighbor selection in visual sensor networks," Third ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), 8 pages, Como, Italy, August 30 - September 2, 2009.
  • C. Qian, H. Qi, "A distributed solution to detect targets in crowds using visual sensor networks" 2nd ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), Stanford University, CA, September 7-11, 2008.
  • C. Qian, H. Qi, "Coverage estimation in the presence of occlusions for visual sensor networks," International Conference on Distributed Computing in Sensor Systems (DCOSS), Santorini Island, Greece, June 11-14, 2008.
  • C. Beall, H. Qi, "Distributed self-deployment in visual sensor networks" Ninth International Conference on Control, Automation, Robotics and Vision (ICARCV), Singapore, December 5-8, 2006.

Software

  • FriendBook - A semantic-based friend recommendation system for social networks