Search Results for author: Oisin Mac Aodha

Found 40 papers, 19 papers with code

Click to Grasp: Zero-Shot Precise Manipulation via Visual Diffusion Descriptors

no code implementations21 Mar 2024 Nikolaos Tsagkas, Jack Rome, Subramanian Ramamoorthy, Oisin Mac Aodha, Chris Xiaoxuan Lu

Precise manipulation that is generalizable across scenes and objects remains a persistent challenge in robotics.

Improving Semantic Correspondence with Viewpoint-Guided Spherical Maps

no code implementations20 Dec 2023 Octave Mariotti, Oisin Mac Aodha, Hakan Bilen

To address these limitations, we propose a new approach for semantic correspondence estimation that supplements discriminative self-supervised features with 3D understanding via a weak geometric spherical prior.

Representation Learning Semantic correspondence

Active Learning-Based Species Range Estimation

1 code implementation NeurIPS 2023 Christian Lange, Elijah Cole, Grant van Horn, Oisin Mac Aodha

Our results demonstrate that our method outperforms alternative active learning methods and approaches the performance of end-to-end trained models, even when only using a fraction of the data.

Active Learning

Spatial Implicit Neural Representations for Global-Scale Species Mapping

2 code implementations5 Jun 2023 Elijah Cole, Grant van Horn, Christian Lange, Alexander Shepard, Patrick Leary, Pietro Perona, Scott Loarie, Oisin Mac Aodha

Estimating the geographical range of a species from sparse observations is a challenging and important geospatial prediction problem.

Representation Learning

VL-Fields: Towards Language-Grounded Neural Implicit Spatial Representations

no code implementations21 May 2023 Nikolaos Tsagkas, Oisin Mac Aodha, Chris Xiaoxuan Lu

We present Visual-Language Fields (VL-Fields), a neural implicit spatial representation that enables open-vocabulary semantic queries.

Segmentation Semantic Segmentation

Self-Supervised Multimodal Learning: A Survey

1 code implementation31 Mar 2023 Yongshuo Zong, Oisin Mac Aodha, Timothy Hospedales

In this survey, we provide a comprehensive review of the state-of-the-art in SSML, in which we elucidate three major challenges intrinsic to self-supervised learning with multimodal data: (1) learning representations from multimodal data without labels, (2) fusion of different modalities, and (3) learning with unaligned data.

Machine Translation Self-Supervised Learning

SAOR: Single-View Articulated Object Reconstruction

no code implementations23 Mar 2023 Mehmet Aygün, Oisin Mac Aodha

We introduce SAOR, a novel approach for estimating the 3D shape, texture, and viewpoint of an articulated object from a single image captured in the wild.

Object Object Reconstruction

Vision Learners Meet Web Image-Text Pairs

no code implementations17 Jan 2023 Bingchen Zhao, Quan Cui, Hao Wu, Osamu Yoshie, Cheng Yang, Oisin Mac Aodha

In this work, given the excellent scalability of web data, we consider self-supervised pre-training on noisy web sourced image-text paired data.

Benchmarking Self-Supervised Learning +1

ViewNet: Unsupervised Viewpoint Estimation from Conditional Generation

no code implementations ICCV 2021 Octave Mariotti, Oisin Mac Aodha, Hakan Bilen

Understanding the 3D world without supervision is currently a major challenge in computer vision as the annotations required to supervise deep networks for tasks in this domain are expensive to obtain on a large scale.

Image Reconstruction Self-Supervised Learning +1

ViewNeRF: Unsupervised Viewpoint Estimation Using Category-Level Neural Radiance Fields

no code implementations1 Dec 2022 Octave Mariotti, Oisin Mac Aodha, Hakan Bilen

We introduce ViewNeRF, a Neural Radiance Field-based viewpoint estimation method that learns to predict category-level viewpoints directly from images during training.

Viewpoint Estimation

SVL-Adapter: Self-Supervised Adapter for Vision-Language Pretrained Models

1 code implementation7 Oct 2022 Omiros Pantazis, Gabriel Brostow, Kate Jones, Oisin Mac Aodha

To combat this, a series of light-weight adaptation methods have been proposed to efficiently adapt such models when limited supervision is available.

General Classification Image Classification +1

Exploring Fine-Grained Audiovisual Categorization with the SSW60 Dataset

1 code implementation21 Jul 2022 Grant van Horn, Rui Qian, Kimberly Wilber, Hartwig Adam, Oisin Mac Aodha, Serge Belongie

We thoroughly benchmark audiovisual classification performance and modality fusion experiments through the use of state-of-the-art transformer methods.

Fine-Grained Visual Categorization Video Classification

Visual Knowledge Tracing

1 code implementation20 Jul 2022 Neehar Kondapaneni, Pietro Perona, Oisin Mac Aodha

In this work, we propose a novel task of tracing the evolving classification behavior of human learners as they engage in challenging visual classification tasks.

Autonomous Driving General Classification +1

On Label Granularity and Object Localization

1 code implementation20 Jul 2022 Elijah Cole, Kimberly Wilber, Grant van Horn, Xuan Yang, Marco Fornoni, Pietro Perona, Serge Belongie, Andrew Howard, Oisin Mac Aodha

Weakly supervised object localization (WSOL) aims to learn representations that encode object location using only image-level category labels.

Object Weakly-Supervised Object Localization

Demystifying Unsupervised Semantic Correspondence Estimation

no code implementations11 Jul 2022 Mehmet Aygün, Oisin Mac Aodha

We explore semantic correspondence estimation through the lens of unsupervised learning.

Semantic correspondence

Capturing Temporal Information in a Single Frame: Channel Sampling Strategies for Action Recognition

1 code implementation25 Jan 2022 Kiyoon Kim, Shreyank N Gowda, Oisin Mac Aodha, Laura Sevilla-Lara

We address the problem of capturing temporal information for video classification in 2D networks, without increasing their computational cost.

Action Recognition Optical Flow Estimation +2

Fine-Grained Image Analysis with Deep Learning: A Survey

no code implementations11 Nov 2021 Xiu-Shen Wei, Yi-Zhe Song, Oisin Mac Aodha, Jianxin Wu, Yuxin Peng, Jinhui Tang, Jian Yang, Serge Belongie

Fine-grained image analysis (FGIA) is a longstanding and fundamental problem in computer vision and pattern recognition, and underpins a diverse set of real-world applications.

Fine-Grained Image Recognition Image Retrieval +1

Multi-Label Learning from Single Positive Labels

2 code implementations CVPR 2021 Elijah Cole, Oisin Mac Aodha, Titouan Lorieul, Pietro Perona, Dan Morris, Nebojsa Jojic

When the number of potential labels is large, human annotators find it difficult to mention all applicable labels for each training image.

Missing Labels Multi-Label Image Classification

When Does Contrastive Visual Representation Learning Work?

no code implementations CVPR 2022 Elijah Cole, Xuan Yang, Kimberly Wilber, Oisin Mac Aodha, Serge Belongie

Recent self-supervised representation learning techniques have largely closed the gap between supervised and unsupervised learning on ImageNet classification.

Contrastive Learning Fine-Grained Image Classification +2

Learning Stereo from Single Images

2 code implementations ECCV 2020 Jamie Watson, Oisin Mac Aodha, Daniyar Turmukhambetov, Gabriel J. Brostow, Michael Firman

We propose that it is unnecessary to have such a high reliance on ground truth depths or even corresponding stereo pairs.

Monocular Depth Estimation Stereo Matching

Geocoding of trees from street addresses and street-level images

no code implementations5 Feb 2020 Daniel Laumer, Nico Lang, Natalie van Doorn, Oisin Mac Aodha, Pietro Perona, Jan Dirk Wegner

We introduce an approach for updating older tree inventories with geographic coordinates using street-level panorama images and a global optimization framework for tree instance matching.

The iWildCam 2018 Challenge Dataset

no code implementations11 Apr 2019 Sara Beery, Grant van Horn, Oisin Mac Aodha, Pietro Perona

Camera traps are a valuable tool for studying biodiversity, but research using this data is limited by the speed of human annotation.

Teaching Multiple Concepts to a Forgetful Learner

no code implementations NeurIPS 2019 Anette Hunziker, Yuxin Chen, Oisin Mac Aodha, Manuel Gomez Rodriguez, Andreas Krause, Pietro Perona, Yisong Yue, Adish Singla

Our framework is both generic, allowing the design of teaching schedules for different memory models, and also interactive, allowing the teacher to adapt the schedule to the underlying forgetting mechanisms of the learner.

Scheduling

Understanding the Role of Adaptivity in Machine Teaching: The Case of Version Space Learners

no code implementations NeurIPS 2018 Yuxin Chen, Adish Singla, Oisin Mac Aodha, Pietro Perona, Yisong Yue

We highlight that adaptivity does not speed up the teaching process when considering existing models of version space learners, such as "worst-case" (the learner picks the next hypothesis randomly from the version space) and "preference-based" (the learner picks hypothesis according to some global preference).

Context Embedding Networks

no code implementations CVPR 2018 Kun Ho Kim, Oisin Mac Aodha, Pietro Perona

Low dimensional embeddings that capture the main variations of interest in collections of data are important for many applications.

The iNaturalist Species Classification and Detection Dataset

19 code implementations CVPR 2018 Grant Van Horn, Oisin Mac Aodha, Yang song, Yin Cui, Chen Sun, Alex Shepard, Hartwig Adam, Pietro Perona, Serge Belongie

Existing image classification datasets used in computer vision tend to have a uniform distribution of images across object categories.

General Classification Image Classification

Hierarchical Subquery Evaluation for Active Learning on a Graph

no code implementations CVPR 2014 Oisin Mac Aodha, Neill D. F. Campbell, Jan Kautz, Gabriel J. Brostow

Under some specific circumstances, Expected Error Reduction has been one of the strongest-performing informativeness criteria for active learning.

Active Learning graph construction +1

Becoming the Expert - Interactive Multi-Class Machine Teaching

no code implementations CVPR 2015 Edward Johns, Oisin Mac Aodha, Gabriel J. Brostow

However, image-importance is individual-specific, i. e. a teaching image is important to a student if it changes their overall ability to discriminate between classes.

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