Search Results for author: Harpreet Sawhney

Found 7 papers, 1 papers with code

STEPs: Self-Supervised Key Step Extraction and Localization from Unlabeled Procedural Videos

1 code implementation ICCV 2023 Anshul Shah, Benjamin Lundell, Harpreet Sawhney, Rama Chellappa

We address the problem of extracting key steps from unlabeled procedural videos, motivated by the potential of Augmented Reality (AR) headsets to revolutionize job training and performance.

Optical Flow Estimation Representation Learning +1

Self-supervised Learning with Local Contrastive Loss for Detection and Semantic Segmentation

no code implementations10 Jul 2022 Ashraful Islam, Ben Lundell, Harpreet Sawhney, Sudipta Sinha, Peter Morales, Richard J. Radke

We evaluate our SSL approach on two downstream tasks -- object detection and semantic segmentation, using COCO, PASCAL VOC, and CityScapes datasets.

Object object-detection +4

Zero-Shot Event Detection by Multimodal Distributional Semantic Embedding of Videos

no code implementations2 Dec 2015 Mohamed Elhoseiny, Jingen Liu, Hui Cheng, Harpreet Sawhney, Ahmed Elgammal

To our knowledge, this is the first Zero-Shot event detection model that is built on top of distributional semantics and extends it in the following directions: (a) semantic embedding of multimodal information in videos (with focus on the visual modalities), (b) automatically determining relevance of concepts/attributes to a free text query, which could be useful for other applications, and (c) retrieving videos by free text event query (e. g., "changing a vehicle tire") based on their content.

Event Detection

Depth Extraction from Videos Using Geometric Context and Occlusion Boundaries

no code implementations25 Oct 2015 S. Hussain Raza, Omar Javed, Aveek Das, Harpreet Sawhney, Hui Cheng, Irfan Essa

We propose to learn and infer depth in videos from appearance, motion, occlusion boundaries, and geometric context of the scene.

Depth Estimation Pose Estimation

Pedestrian Detection in Low-resolution Imagery by Learning Multi-scale Intrinsic Motion Structures (MIMS)

no code implementations CVPR 2014 Jiejie Zhu, Omar Javed, Jingen Liu, Qian Yu, Hui Cheng, Harpreet Sawhney

In this paper, we give a comparative evaluation of the proposed method and demonstrate that MIMS outperforms the state of the art approaches in identifying pedestrians from low resolution airborne videos.

Optical Flow Estimation Pedestrian Detection

Recognizing Activities via Bag of Words for Attribute Dynamics

no code implementations CVPR 2013 Weixin Li, Qian Yu, Harpreet Sawhney, Nuno Vasconcelos

A video sequence is decomposed into short-term segments, which are characterized by the dynamics of their attributes.

Activity Recognition Attribute

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