Hamed Pirsiavash







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Postdoctoral Research Associate


Office: 32-D542, 32 Vassar Street, Cambridge, MA 02139

Email: hpirsiav (AT) mit (DOT) edu




I joined Antonio Torralba's Lab at MIT CSAIL as a Postdoctoral Associate in October 2012. My research is in the field of computer vision and machine learning.

I graduated with a PhD in computer science from the University of California Irvine in September 2012. I was advised by Deva Ramanan and co-advised by Ramesh Jain. I was affiliated with the Computational Vision Lab and Experiential Systems Lab at UC Irvine.

I was born in Tabriz, a city in the north of Iran, and grew up in Tehran, capital of Iran. I got my MSc. in Electrical Engineering from Sharif University of Technology, Tehran, Iran (map) in Jan. 2006 under the supervision of Prof. Farokh Marvasti and Prof. Shohreh Kasaei.



  • Hamed Pirsiavash, Carl Vondrick, Antonio Torralba, "Assessing the Quality of Actions", ECCV 2014 [PDF]

  • Hamed Pirsiavash*, Carl Vondrick*, Antonio Torralba, "Inferring the Why in Images", Tech Report 2014 [PDF][Project] *equal contribution

  • Carl Vondrick, Hamed Pirsiavash, Aude Oliva, Antonio Torralba, "Acquiring Visual Classifiers from Human Imagination", Tech Report 2014 [PDF][Project]

  • Hamed Pirsiavash, Deva Ramanan, "Parsing Videos of Actions with Segmental Grammars", CVPR 2014 (oral presentation) [PDF] [News: NBC News, WIRED-UK, GIGAOM, MIT News]

  • Agata Lapedriza, Hamed Pirsiavash, Zoya Bylinskii, Antonio Torralba, "Are all training examples equally valuable?", arXiv preprint arXiv:1311.6510, 2013. [PDF]
  • Joseph Lim, Hamed Pirsiavash, Antonio Torralba, "Parsing IKEA Objects: Fine Pose Estimation", ICCV 2013 [PDF]
  • Hamed Pirsiavash, Deva Ramanan, "Detecting activities of daily living in first-person camera views", CVPR 2012 (oral presentation) [PDF] [Slides PPT (53MB)] [Slides PDF (7MB)][Poster PDF (4MB)] [Dataset+code]
  • Hamed Pirsiavash, Deva Ramanan, "Steerable part models", CVPR 2012. [PDF] [Slides PPT] [Poster PDF]
  • Hamed Pirsiavash, Deva Ramanan, Charless Fowlkes, "Globally-Optimal Greedy Algorithms for Tracking a Variable Number of Objects," Computer vision and Pattern Recognition CVPR 2011, Jun 2011. [PDF] [Code]
  • Sangmin Oh, et al., "A Large-scale Benchmark Dataset for Event Recognition in Surveillance Video, " Computer Vision and Pattern Recognition CVPR 2011, Jun 2011. [PDF]
  • John Adcock, Matthew Cooper, Laurent Denoue, Hamed Pirsiavash, Lawrence Rowe, "TalkMiner: A Lecture Webcast Search Engine," ACM Multimedia 2010, Oct 2010. [PDF] [www.talkminer.com]
  • John Adcock, Matthew Cooper, Laurent Denoue, Hamed Pirsiavash, Lawrence Rowe, "TalkMiner: A Search Engine for Online Lecture Video," ACM Multimedia 2010 - Industrial Exhibits, Oct 2010. [PDF] [www.talkminer.com]
  • Hamed Pirsiavash, Deva Ramanan, Charless Fowlkes, "Bilinear Classifiers for Visual Recognition," Neural Information Processing Systems (NIPS 2009), Vancouver, Canada, Dec 2009. (Spotlight presentation) [PDF] [Slides] [PPT] [Poster]
  • Shahriar Negahdaripour, Hicham Sekkati, Hamed Pirsiavash, "Opti-Acoustic Stereo Imaging: On System Calibration and 3-D Target Reconstruction," IEEE Transactions on Image Processing, Vol 18, Issue 6, Jun 2009, PP: 1203-1214. [PDF]
  • Vivek Singh, Hamed Pirsiavash, Ish Rishabh, Ramesh Jain, "Towards Environment-to-Environment (E2E) multimedia communication systems," Multimedia Tools and Applications Journal, Springer Netherlands, May 2009. [PDF]
  • Maxim Lazarov, Hamed Pirsiavash, Behzad Sajadi, Uddipan Mukherjee, Aditi Majumder, "Data Handling Displays," 6th IEEE/ACM International Workshop on Projector-Camera Systems (Procams 2009) in conjunction with IEEE CVPR 2009, Miami, Florida, Jun 2009. [PDF]
  • Pinaki Sinha, Hamed Pirsiavash, Ramesh Jain, "Personal Photo Album Summarization," ACM Multimedia Grand Challenge, Beijing, China, Oct 2009. [PDF]
  • Hamed Pirsiavash, Vivek Singh, Aditi Majumder, Ramesh Jain, "Shared Visualization Spaces for Environment to Environment Communication," NSF Workshop on Media Arts, Science, and Technology (MAST), Santa Barbara, CA, Jan 2009. [PDF]
  • Vivek Singh, Hamed Pirsiavash, Ish Rishabh, Ramesh Jain, "Towards Environment-to-Environment (E2E) Multimedia Communication Systems," ACM International Workshop on Semantic Ambient Media Experience (ACM MM-SAME), Vancouver, Oct 2008. [PDF]
  • Ish Rishabh, Vivek Kumar Singh, Hamed Pirsiavash, Ramesh Jain, "Environment to environment (E2E) communication systems for collaborative work," Computer supported cooperative work (CSCW), San diego 2008. [PDF]
  • Shahriar Negahdaripour, Hamed Pirsiavash, Hicham Sekkati, "Integration of motion cues in optical and sonar video imaging for 3-D positioning, " BenCOS in conjunction with IEEE CVPR 2007, Minneapolis, MN, Jun. 2007. [PDF]
  • Shahriar Negahdaripour, Hicham Sekkati, Hamed Pirsiavash, "Opti-Acoustic Stereo Imaging, System Calibration and 3-D Reconstruction," BMG workshop in conjunction with IEEE CVPR 2007, Minneapolis, MN, Jun. 2007. (Best Paper Award) [PDF]
  • Shahriar Negahdaripour, Hamed Pirsiavash, Ali Taatian, "A geometric approach to solving the correspondence problem in opti-acoustic stereo imaging," Proc. UUST 2007, Univ. New Hampshire, August, 2007.


  • Hamed Pirsiavash, Shohreh Kasaei, Farokh Marvasti, "An Efficient Parameter Selection Criterion for Image Denoising," The 5th IEEE International Symposium on Signal Processing and Information Technology (IEEE ISSPIT 2005), Athens, Greece, Dec. 2005. [PDF]
  • Hamed Pirsiavash, Mohammad Soleymani, Gholam-Ali Hossein-Zadeh, "An Iterative Approach for Reconstruction of Arbitrary Sparsely Sampled Magnetic Resonance Images," The 18th IEEE International Symposium on Computer-Based Medical Systems (IEEE CBMS 2005), Dublin, Ireland, Jun. 2005. [PDF]
  • Hamed Pirsiavash, Ramin Mehran, Farbod Razzazi, "A Robust Free Size OCR for Omni-font Persian/Arabic Printed Document using MLP/SVM, " 10th Iberoamerican Congress on Pattern Recognition, Havana, Cuba, Lecture Notes in Computer Science, LNCS 3773, pp. 601-610, Springer Verlag, Nov. 2005. [PDF]
  • Amir Houmansadr, Hamed Pirsiavash, Shahrokh Ghaemmaghami, "Robust Content-based Video Watermarking Exploiting Motion Entropy Masking Effect," International Conference on Signal Processing and Multimedia Applications, Setubal, Portugal, Aug. 2006. [PDF]
  • Ramin Mehran, Hamed Pirsiavash, Farbod Razzazi, "A Front-end OCR for Omni-font Persian/Arabic Cursive Printed Documents," Digital Image Computing: Techniques and Applications (DICTA 2005), Cairns, Australia, Dec. 2005, published by IEEE CS Press. [PDF]
  • Hamed Pirsiavash, Farbod Razzazi, "Design and Implementation of a Hierarchical Classifier for Isolated Handwritten Persian/Arabic Characters," International Conference on Signal Processing, Turkey, 2003.
  • Hamed Pirsiavash, Mohammad Soleymani, and Farbod Razzazi, "Design and Implementation of a Persian/Arabic OCR for Closed Vocabulary Isolated Characters using Hierarchical Neural Networks," 1st Iranian machine vision and image processing conference, Birjand, Iran, March 2001 (in Farsi.)





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