activity
20182023
most citedDoes Self-supervised Learning Really Improve Reinforcement Learning from Pixels?

9 citations · 40 across the 13 of their papers we have counts for

collaborators

17 papers

cs.CV2023

AAN: Attributes-Aware Network for Temporal Action Detection

Rui Dai, Srijan Das, Michael S. Ryoo +1

The challenge of long-term video understanding remains constrained by the efficient extraction of object semantics and the modelling of their relationships for downstream tasks. Al…

cs.CV2023

Attending Generalizability in Course of Deep Fake Detection by Exploring Multi-task Learning

Pranav Balaji, Abhijit Das, Srijan Das +1

This work explores various ways of exploring multi-task learning (MTL) techniques aimed at classifying videos as original or manipulated in cross-manipulation scenario to attend ge…

cs.CV2023★ 4 cited

Seeing the Pose in the Pixels: Learning Pose-Aware Representations in Vision Transformers

Dominick Reilly, Aman Chadha, Srijan Das

Human perception of surroundings is often guided by the various poses present within the environment. Many computer vision tasks, such as human action recognition and robot imitati…

cs.CV2022★ 7 cited

Video + CLIP Baseline for Ego4D Long-term Action Anticipation

Srijan Das, Michael S. Ryoo

In this report, we introduce our adaptation of image-text models for long-term action anticipation. Our Video + CLIP framework makes use of a large-scale pre-trained paired image-t…

cs.CV2022★ 5 cited

Learning Viewpoint-Agnostic Visual Representations by Recovering Tokens in 3D Space

Jinghuan Shang, Srijan Das, Michael S. Ryoo

Humans are remarkably flexible in understanding viewpoint changes due to visual cortex supporting the perception of 3D structure. In contrast, most of the computer vision models th…

cs.LG2022★ 9 cited

Does Self-supervised Learning Really Improve Reinforcement Learning from Pixels?

Xiang Li, Jinghuan Shang, Srijan Das +1

We investigate whether self-supervised learning (SSL) can improve online reinforcement learning (RL) from pixels. We extend the contrastive reinforcement learning framework (e.g.,…

cs.CV2022★ 3 cited

CD-Net: Histopathology Representation Learning using Pyramidal Context-Detail Network

Saarthak Kapse, Srijan Das, Prateek Prasanna

Extracting rich phenotype information, such as cell density and arrangement, from whole slide histology images (WSIs), requires analysis of large field of view, i.e more contexual…

cs.CV2021★ 2 cited

ViewCLR: Learning Self-supervised Video Representation for Unseen Viewpoints

Srijan Das, Michael S. Ryoo

Learning self-supervised video representation predominantly focuses on discriminating instances generated from simple data augmentation schemes. However, the learned representation…

cs.CV2021

Cross-modal Manifold Cutmix for Self-supervised Video Representation Learning

Srijan Das, Michael S. Ryoo

Contrastive representation learning of videos highly relies on the availability of millions of unlabelled videos. This is practical for videos available on web but acquiring such l…

cs.CV2021

MS-TCT: Multi-Scale Temporal ConvTransformer for Action Detection

Rui Dai, Srijan Das, Kumara Kahatapitiya +2

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. The temporal relation is complex in those datasets, including c…

cs.CV2021

CTRN: Class-Temporal Relational Network for Action Detection

Rui Dai, Srijan Das, Francois Bremond

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. There are many real-world challenges in those datasets, such as…

cs.CV2021

Weakly-supervised Joint Anomaly Detection and Classification

Snehashis Majhi, Srijan Das, Francois Bremond +2

Anomaly activities such as robbery, explosion, accidents, etc. need immediate actions for preventing loss of human life and property in real world surveillance systems. Although th…

cs.CV2021

Learning an Augmented RGB Representation with Cross-Modal Knowledge Distillation for Action Detection

Rui Dai, Srijan Das, Francois Bremond

In video understanding, most cross-modal knowledge distillation (KD) methods are tailored for classification tasks, focusing on the discriminative representation of the trimmed vid…

cs.CV2021★ 1 cited

VPN++: Rethinking Video-Pose embeddings for understanding Activities of Daily Living

Srijan Das, Rui Dai, Di Yang +1

Many attempts have been made towards combining RGB and 3D poses for the recognition of Activities of Daily Living (ADL). ADL may look very similar and often necessitate to model fi…

cs.CV2020★ 8 cited

Toyota Smarthome Untrimmed: Real-World Untrimmed Videos for Activity Detection

Rui Dai, Srijan Das, Saurav Sharma +4

Designing activity detection systems that can be successfully deployed in daily-living environments requires datasets that pose the challenges typical of real-world scenarios. In t…

cs.CV2020

VPN: Learning Video-Pose Embedding for Activities of Daily Living

Srijan Das, Saurav Sharma, Rui Dai +2

In this paper, we focus on the spatio-temporal aspect of recognizing Activities of Daily Living (ADL). ADL have two specific properties (i) subtle spatio-temporal patterns and (ii)…

cs.CV2018★ 1 cited

Deep-Temporal LSTM for Daily Living Action Recognition

Srijan Das, Michal Koperski, Francois Bremond +1

In this paper, we propose to improve the traditional use of RNNs by employing a many to many model for video classification. We analyze the importance of modeling spatial layout an…