Search Results for author: Amir Bar

Found 20 papers, 9 papers with code

EgoPet: Egomotion and Interaction Data from an Animal's Perspective

no code implementations15 Apr 2024 Amir Bar, Arya Bakhtiar, Danny Tran, Antonio Loquercio, Jathushan Rajasegaran, Yann Lecun, Amir Globerson, Trevor Darrell

Animals perceive the world to plan their actions and interact with other agents to accomplish complex tasks, demonstrating capabilities that are still unmatched by AI systems.

Finding Visual Task Vectors

1 code implementation8 Apr 2024 Alberto Hojel, Yutong Bai, Trevor Darrell, Amir Globerson, Amir Bar

In this work, we analyze the activations of MAE-VQGAN, a recent Visual Prompting model, and find task vectors, activations that encode task-specific information.

Visual Prompting

IMProv: Inpainting-based Multimodal Prompting for Computer Vision Tasks

no code implementations4 Dec 2023 Jiarui Xu, Yossi Gandelsman, Amir Bar, Jianwei Yang, Jianfeng Gao, Trevor Darrell, Xiaolong Wang

Given a textual description of a visual task (e. g. "Left: input image, Right: foreground segmentation"), a few input-output visual examples, or both, the model in-context learns to solve it for a new test input.

Colorization Foreground Segmentation +3

Sequential Modeling Enables Scalable Learning for Large Vision Models

1 code implementation1 Dec 2023 Yutong Bai, Xinyang Geng, Karttikeya Mangalam, Amir Bar, Alan Yuille, Trevor Darrell, Jitendra Malik, Alexei A Efros

We introduce a novel sequential modeling approach which enables learning a Large Vision Model (LVM) without making use of any linguistic data.

Object-based (yet Class-agnostic) Video Domain Adaptation

no code implementations29 Nov 2023 Dantong Niu, Amir Bar, Roei Herzig, Trevor Darrell, Anna Rohrbach

Existing video-based action recognition systems typically require dense annotation and struggle in environments when there is significant distribution shift relative to the training data.

Action Recognition Domain Adaptation +1

Visual Prompting via Image Inpainting

1 code implementation1 Sep 2022 Amir Bar, Yossi Gandelsman, Trevor Darrell, Amir Globerson, Alexei A. Efros

How does one adapt a pre-trained visual model to novel downstream tasks without task-specific finetuning or any model modification?

Colorization Edge Detection +6

Structured Video Tokens @ Ego4D PNR Temporal Localization Challenge 2022

no code implementations15 Jun 2022 Elad Ben-Avraham, Roei Herzig, Karttikeya Mangalam, Amir Bar, Anna Rohrbach, Leonid Karlinsky, Trevor Darrell, Amir Globerson

First, as both images and videos contain structured information, we enrich a transformer model with a set of \emph{object tokens} that can be used across images and videos.

Point- of-no-return (PNR) temporal localization Temporal Localization

Bringing Image Scene Structure to Video via Frame-Clip Consistency of Object Tokens

no code implementations13 Jun 2022 Elad Ben-Avraham, Roei Herzig, Karttikeya Mangalam, Amir Bar, Anna Rohrbach, Leonid Karlinsky, Trevor Darrell, Amir Globerson

We explore a particular instantiation of scene structure, namely a \emph{Hand-Object Graph}, consisting of hands and objects with their locations as nodes, and physical relations of contact/no-contact as edges.

Action Recognition Video Understanding

Object-Region Video Transformers

1 code implementation CVPR 2022 Roei Herzig, Elad Ben-Avraham, Karttikeya Mangalam, Amir Bar, Gal Chechik, Anna Rohrbach, Trevor Darrell, Amir Globerson

In this work, we present Object-Region Video Transformers (ORViT), an \emph{object-centric} approach that extends video transformer layers with a block that directly incorporates object representations.

Action Detection Few-Shot action recognition +3

DETReg: Unsupervised Pretraining with Region Priors for Object Detection

1 code implementation CVPR 2022 Amir Bar, Xin Wang, Vadim Kantorov, Colorado J Reed, Roei Herzig, Gal Chechik, Anna Rohrbach, Trevor Darrell, Amir Globerson

Recent self-supervised pretraining methods for object detection largely focus on pretraining the backbone of the object detector, neglecting key parts of detection architecture.

Few-Shot Learning Few-Shot Object Detection +6

Compositional Video Synthesis with Action Graphs

1 code implementation27 Jun 2020 Amir Bar, Roei Herzig, Xiaolong Wang, Anna Rohrbach, Gal Chechik, Trevor Darrell, Amir Globerson

Our generative model for this task (AG2Vid) disentangles motion and appearance features, and by incorporating a scheduling mechanism for actions facilitates a timely and coordinated video generation.

Scheduling Video Generation +2

Improved ICH classification using task-dependent learning

no code implementations29 Jun 2019 Amir Bar, Michal Mauda, Yoni Turner, Michal Safadi, Eldad Elnekave

Head CT is one of the most commonly performed imaging studied in the Emergency Department setting and Intracranial hemorrhage (ICH) is among the most critical and timesensitive findings to be detected on Head CT. We present BloodNet, a deep learning architecture designed for optimal triaging of Head CTs, with the goal of decreasing the time from CT acquisition to accurate ICH detection.

Classification General Classification

PHT-bot: Deep-Learning based system for automatic risk stratification of COPD patients based upon signs of Pulmonary Hypertension

no code implementations28 May 2019 David Chettrit, Orna Bregman Amitai, Itamar Tamir, Amir Bar, Eldad Elnekave

Secondary pulmonary hypertension is a manifestation of advanced COPD, which can be reliably diagnosed by the main Pulmonary Artery (PA) to Ascending Aorta (Ao) ratio.

Computed Tomography (CT)

Compression Fractures Detection on CT

no code implementations6 Jun 2017 Amir Bar, Lior Wolf, Orna Bergman Amitai, Eyal Toledano, Eldad Elnekave

Finally a Recurrent Neural Network (RNN) is utilized to predict whether a vertebral fracture is present in the series of patches.

Computed Tomography (CT)

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