I am a PhD student advised by Professor Fei-Fei Li at the Stanford Vision lab. I work in the areas of computer vision and machine learning with focus on human event description in videos, and joint processing of text and image data. Before joining Stanford, I graduated from IIT Kharagpur with B.Tech in Electrical Engineering and M.Tech in Instrumentation Engineering.

Publications

Detecting Events and Key Actors in Multi-Person Videos
Vignesh Ramanathan, Jonathan Huang, Sami Abu-El-Haija, Alexander Gorban, Kevin Murphy and Li Fei-Fei
IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Las Vegas, June 26-30, 2016.
Oral presentation; arXiv:1511.02917 [pdf]   [project page]   [BibTex]

Neighborhood LSTM: Human Trajectory Prediction in Crowded Spaces
Alexandre Alahi*, Kratarth Goel*, Vignesh Ramanathan, Alexandre Robicquet, Li Fei-Fei, Silvio Savarese
IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Las Vegas, June 26-30, 2016.
[pdf]   [BibTex]

Learning Temporal Embeddings for Complex Video Analysis
Vignesh Ramanathan, Kevin Tang, Greg Mori and Li Fei-Fei
International Conference on Computer Vision (ICCV). Santiago, Chile. Dec 13-16, 2015.
arXiv:1505.00315 [pdf]   [codes]   [BibTex]

Learning semantic relationships for better action retrieval in images
Vignesh Ramanathan, Congcong Li, Jia Deng, Wei Han, Zhen Li, Kunlong Gu, Yang Song, Samy Bengio, Chuck Rossenberg and Li Fei-Fei
IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Boston, June 7-12, 2015.
[pdf]  [supp.]   [project page]   [BibTex]

Linking people in videos with "their" names using coreference resolution
Vignesh Ramananthan, Armand Joulin, Percy Liang, and Li Fei-Fei
European Conference on Computer Vision (ECCV). Zurich, Sept 6-12, 2014.
Oral presentation; Acceptance rate: 5.0%;    [pdf]  [supp.]  [codes+data]  [presentation video]  [BibTex]

Socially-aware Large-scale Crowd Forecasting
Alexandre Alahi, Vignesh Ramananthan and Li Fei-Fei
IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Columbus, OH, USA. June 24-27, 2014.
Oral presentation; Acceptance rate: 5.8%;    [pdf]  [BibTex]

Video Event Understanding using Natural Language Descriptions
Vignesh Ramananthan, Percy Liang, and Li Fei-Fei
International Conference on Computer Vision (ICCV). Sydney, Australia. Dec 1-8, 2013.
[pdf]  [supp.]  [BibTex]

Social Role Discovery in Human Events
Vignesh Ramananthan, Bangpeng Yao, and Li Fei-Fei
IEEE Conference on Computer Vision and Pattern Recognition (CVPR). Portland, OR, USA. June 23-28, 2013.
Oral presentation; Acceptance rate: 4.0%;    [pdf]  [supp.]  [pptx]  [poster]  [data]  [BibTex]

Shifting Weights: Adapting Object Detectors from Image to Video
Kevin Tang, Vignesh Ramanathan, Li Fei-Fei, and Daphne Koller.
Neural Information Processing Systems (NIPS). Lake Tahoe, NV, USA. Dec 3-6, 2012.
[pdf]  [BibTex]

Secure Steganography using Randomized Cropping
Arijit Sur, Vignesh Ramanathan, and Jayanta Mukherjee
LNCS Transactions on Data Hiding and Multimedia Security, vol. 7110, pp 82-95, 2012

Pixel rearrangement based statistical restoration scheme reducing embedding noise
Arijit Sur, Vignesh Ramanathan, and Jayanta Mukherjee
Multimedia Tools and Applications, Springer, 2012
[pdf]

Quadtree Decomposition based Extended Vector Space Model for Image Retrieval
Vignesh Ramanathan, Shaunak Mishra, and Pabitra Mitra.
IEEE Workshop on the Applications of Computer Vision (WACV). Kona, HW, USA. Jan 5-6, 2011.
[pdf]  [BibTex]

Active object categorization on humanoid platform
Vignesh Ramanathan, and Axel Pinz
International Conference on Computer Vision Theory and Applications (VISAPP). Portugal. 2011.
Oral presentation  [pdf]

Fast Non-Local Means (NLM) Computation with Probabilistic Early Termination
Vignesh Ramanathan, Byung Tae Oh, and C. -C. Kuo
IEEE Signal Processing Letters (SPL). vol. 3, pp 277-280, 2010
[pdf]  [BibTex]