I am a second-year PhD student at University of Bristol working with Prof. Dima Damen. My research interests lie in Computer Vision, Pattern Recognition, and Machine Learning. Currently, I am working on devising learning-based methods for understanding and exploring various aspects of first-person (egocentric) vision. Previously, at CVIT, IIIT Hyderabad, I worked with Prof. C.V. Jawahar and Prof. Chetan Arora on unsupervised procedure learning from egocentric videos. Earlier, I worked on improving word recognition and retrieval in large document collection with Prof. C.V. Jawahar and on 3D Computer Vision with Prof. Shanmuganathan Raman.

My ultimate goal is to contribute to the development of systems capable of understanding the world as we do. I’m an inquisitive person, and I’m always willing to learn about fields including, but not limited to, science, technology, astrophysics, and physics.

CV / Google Scholar / Github / LinkedIn / arXiv / ORCID

News


Oct, 2024 : Our Survey paper “An Outlook into the Future of Egocentric Vision” appeared in Vol 132 at IJCV in its final format.

June, 2024 : Co-organising the First Joint Egocentric Vision (EgoVis) Workshop at CVPR 2024 in Seattle. Come join us in Summit 428!

April, 2024 : An Outlook into the Future of Egocentric Vision got accepted to IJCV (PDF)!

April, 2024 : Introducing HOI-Ref: Hand-Object Interaction Referral in Egocentric Vision. A new task to understand hand-object interaction using VLMs.

March, 2024 : Ego-Exo4D: Understanding Skilled Human Activity from First- and Third-Person Perspectives got accepted to CVPR 2024!

Nov, 2023 : Introducing Ego-Exo4D, a foundational dataset for research on video learning and multimodal perception. In collboration with Meta and 11 universities!

Oct, 2023 : United We Stand, Divided We Fall: UnityGraph for Unsupervised Procedure Learning from Videos got accepted to WACV 2024!

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Machine Learning and Computer Vision (MaVi) @ University of Bristol

Publications


HOI-Ref: Hand-Object Interaction Referral in Egocentric Vision

We propose the HOI-Ref task to understand hand-object interaction using Vision Language Models (VLMs). We introduce the HOI-QA dataset with 3.9M question-answer pairs for training and evaluating VLMs. Finally, we train the first VLM for HOI-Ref, achieving state-of-the-art performance.

Siddhant Bansal, Michael Wray, Dima Damen

Paper / Download the HOI-QA Dataset / Project Page / Code

Ego-Exo4D: Understanding Skilled Human Activity from First- and Third-Person Perspectives

Ego-Exo4D is a diverse, large-scale multi-modal, multi-view, video dataset and benchmark collected across 13 cities worldwide by 839 camera wearers, capturing 1422 hours of video of skilled human activities.
We present three synchronized natural language datasets paired with videos. (1) expert commentary, (2) participant-provided narrate-and-act, and (3) one-sentence atomic action descriptions.
Finally, our camera configuration features Aria glasses for ego capture which is time-synchronized with 4-5 (stationary) GoPros as the exo capture devices.

Kristen Grauman, Andrew Westbury, Lorenzo Torresani, Kris Kitani, Jitendra Malik, Triantafyllos Afouras, Kumar Ashutosh, Vijay Baiyya, Siddhant Bansal, Bikram Boote, Eugene Byrne, Zach Chavis, Joya Chen, Feng Cheng, Fu-Jen Chu, Sean Crane, Avijit Dasgupta, Jing Dong, Maria Escobar, Cristhian Forigua, Abrham Gebreselasie, Sanjay Haresh, Jing Huang, Md Mohaiminul Islam, Suyog Jain, Rawal Khirodkar, Devansh Kukreja, Kevin J Liang, Jia-Wei Liu, Sagnik Majumder, Yongsen Mao, Miguel Martin, Effrosyni Mavroudi, Tushar Nagarajan, Francesco Ragusa, Santhosh Kumar Ramakrishnan, Luigi Seminara, Arjun Somayazulu, Yale Song, Shan Su, Zihui Xue, Edward Zhang, Jinxu Zhang, Angela Castillo, Changan Chen, Xinzhu Fu, Ryosuke Furuta, Cristina Gonzalez, Prince Gupta, Jiabo Hu, Yifei Huang, Yiming Huang, Weslie Khoo, Anush Kumar, Robert Kuo, Sach Lakhavani, Miao Liu, Mi Luo, Zhengyi Luo, Brighid Meredith, Austin Miller, Oluwatumininu Oguntola, Xiaqing Pan, Penny Peng, Shraman Pramanick, Merey Ramazanova, Fiona Ryan, Wei Shan, Kiran Somasundaram, Chenan Song, Audrey Southerland, Masatoshi Tateno, Huiyu Wang, Yuchen Wang, Takuma Yagi, Mingfei Yan, Xitong Yang, Zecheng Yu, Shengxin Cindy Zha, Chen Zhao, Ziwei Zhao, Zhifan Zhu, Jeff Zhuo, Pablo Arbelaez, Gedas Bertasius, David Crandall, Dima Damen, Jakob Engel, Giovanni Maria Farinella, Antonino Furnari, Bernard Ghanem, Judy Hoffman, C. V. Jawahar, Richard Newcombe, Hyun Soo Park, James M. Rehg, Yoichi Sato, Manolis Savva, Jianbo Shi, Mike Zheng Shou, Michael Wray

Conference on Computer Vision and Pattern Recognition (CVPR), 2024

Paper / Project Page / Video / Meta blog post

United We Stand, Divided We Fall: UnityGraph for Unsupervised Procedure Learning from Videos

We propose Graph-based Procedure Learning (GPL) framework for procedure learning. GPL creates novel UnityGraph that represents all the task videos as a graph to encode both intra-video and inter-videos context. We achieve an improvement of 2% on third-person datasets and 3.6% on EgoProceL.

Siddhant Bansal, Chetan Arora, C.V. Jawahar

Winter Conference on Applications of Computer Vision (WACV), 2024

Paper / Download the EgoProceL Dataset / Project Page / Video

An Outlook into the Future of Egocentric Vision

The survey looks at the difference between what we’re studying now in egocentric vision and what we expect in the future. We imagine the future using stories and connect them to current research. We highlight problems, analyze current progress, and suggest areas to explore in egocentric vision, aiming for a future that’s always on, personalized, and improves our lives.

International Journal of Computer Vision (IJCV)

Project Page / Paper (IJCV) / Paper + comments (OpenReview) / Paper (arXiv)

My View is the Best View: Procedure Learning from Egocentric Videos

We propose the EgoProceL dataset consisting of 62 hours of videos captured by 130 subjects performing 16 tasks and a self-supervised Correspond and Cut (CnC) framework for procedure learning. CnC utilizes the temporal correspondences between the key-steps across multiple videos to learn the procedure.

Siddhant Bansal, Chetan Arora, C.V. Jawahar

European Conference on Computer Vision (ECCV), 2022

Paper / Download the EgoProceL Dataset / Project Page / Code


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Miscellaneous


Invited Talks

Workshop Organizer

Conference Reviewer

  • CVPR 2022, 2023, 2024
  • ICCV 2023
  • ECCV 2022, 2024
  • WACV 2023, 2024
  • ICRA 2025

Journal Reviewer

  • IEEE Transactions on Pattern Analysis and Machine Intelligence (T-PAMI)
  • International Journal of Computer Vision (IJCV)
  • Computer Vision and Image Understanding (CVIU)

Workshop Reviewer

Thesis