Search Results for author: Subhankar Roy

Found 21 papers, 17 papers with code

Metric-Learning based Deep Hashing Network for Content Based Retrieval of Remote Sensing Images

1 code implementation2 Apr 2019 Subhankar Roy, Enver Sangineto, Begüm Demir, Nicu Sebe

Hashing methods have been recently found very effective in retrieval of remote sensing (RS) images due to their computational efficiency and fast search speed.

Computational Efficiency Deep Hashing +1

Regularized Evolutionary Algorithm for Dynamic Neural Topology Search

no code implementations15 May 2019 Cristiano Saltori, Subhankar Roy, Nicu Sebe, Giovanni Iacca

Although very effective, evolutionary algorithms rely heavily on having a large population of individuals (i. e., network architectures) and is therefore memory expensive.

Evolutionary Algorithms Neural Architecture Search +1

Curriculum Graph Co-Teaching for Multi-Target Domain Adaptation

1 code implementation CVPR 2021 Subhankar Roy, Evgeny Krivosheev, Zhun Zhong, Nicu Sebe, Elisa Ricci

In this paper we address multi-target domain adaptation (MTDA), where given one labeled source dataset and multiple unlabeled target datasets that differ in data distributions, the task is to learn a robust predictor for all the target domains.

Blended-target Domain Adaptation Multi-target Domain Adaptation

Neighborhood Contrastive Learning for Novel Class Discovery

1 code implementation CVPR 2021 Zhun Zhong, Enrico Fini, Subhankar Roy, Zhiming Luo, Elisa Ricci, Nicu Sebe

In this paper, we address Novel Class Discovery (NCD), the task of unveiling new classes in a set of unlabeled samples given a labeled dataset with known classes.

Clustering Contrastive Learning +1

Class-incremental Novel Class Discovery

1 code implementation18 Jul 2022 Subhankar Roy, Mingxuan Liu, Zhun Zhong, Nicu Sebe, Elisa Ricci

We study the new task of class-incremental Novel Class Discovery (class-iNCD), which refers to the problem of discovering novel categories in an unlabelled data set by leveraging a pre-trained model that has been trained on a labelled data set containing disjoint yet related categories.

Incremental Learning Knowledge Distillation +1

Uncertainty-guided Source-free Domain Adaptation

1 code implementation16 Aug 2022 Subhankar Roy, Martin Trapp, Andrea Pilzer, Juho Kannala, Nicu Sebe, Elisa Ricci, Arno Solin

Source-free domain adaptation (SFDA) aims to adapt a classifier to an unlabelled target data set by only using a pre-trained source model.

Source-Free Domain Adaptation

Cooperative Self-Training for Multi-Target Adaptive Semantic Segmentation

1 code implementation4 Oct 2022 Yangsong Zhang, Subhankar Roy, Hongtao Lu, Elisa Ricci, Stéphane Lathuilière

In this work we address multi-target domain adaptation (MTDA) in semantic segmentation, which consists in adapting a single model from an annotated source dataset to multiple unannotated target datasets that differ in their underlying data distributions.

Domain Adaptation Multi-target Domain Adaptation +2

Simplifying Open-Set Video Domain Adaptation with Contrastive Learning

1 code implementation9 Jan 2023 Giacomo Zara, Victor Guilherme Turrisi da Costa, Subhankar Roy, Paolo Rota, Elisa Ricci

In this work we address a more realistic scenario, called open-set video domain adaptation (OUVDA), where the target dataset contains "unknown" semantic categories that are not shared with the source.

Action Recognition Contrastive Learning +1

Large-scale Pre-trained Models are Surprisingly Strong in Incremental Novel Class Discovery

1 code implementation28 Mar 2023 Mingxuan Liu, Subhankar Roy, Zhun Zhong, Nicu Sebe, Elisa Ricci

Discovering novel concepts from unlabelled data and in a continuous manner is an important desideratum of lifelong learners.

Novel Class Discovery Novel Concepts

One-shot Unsupervised Domain Adaptation with Personalized Diffusion Models

1 code implementation31 Mar 2023 Yasser Benigmim, Subhankar Roy, Slim Essid, Vicky Kalogeiton, Stéphane Lathuilière

Departing from the common notion of transferring only the target ``texture'' information, we leverage text-to-image diffusion models (e. g., Stable Diffusion) to generate a synthetic target dataset with photo-realistic images that not only faithfully depict the style of the target domain, but are also characterized by novel scenes in diverse contexts.

Data Augmentation One-shot Unsupervised Domain Adaptation +2

AutoLabel: CLIP-based framework for Open-set Video Domain Adaptation

1 code implementation CVPR 2023 Giacomo Zara, Subhankar Roy, Paolo Rota, Elisa Ricci

Open-set Unsupervised Video Domain Adaptation (OUVDA) deals with the task of adapting an action recognition model from a labelled source domain to an unlabelled target domain that contains "target-private" categories, which are present in the target but absent in the source.

Action Recognition Domain Adaptation +1

RaSP: Relation-aware Semantic Prior for Weakly Supervised Incremental Segmentation

no code implementations31 May 2023 Subhankar Roy, Riccardo Volpi, Gabriela Csurka, Diane Larlus

Class-incremental semantic image segmentation assumes multiple model updates, each enriching the model to segment new categories.

Continual Learning Image Segmentation +2

Contrast, Stylize and Adapt: Unsupervised Contrastive Learning Framework for Domain Adaptive Semantic Segmentation

1 code implementation15 Jun 2023 Tianyu Li, Subhankar Roy, Huayi Zhou, Hongtao Lu, Stephane Lathuiliere

To address this, we present CONtrastive FEaTure and pIxel alignment (CONFETI) for bridging the domain gap at both the pixel and feature levels using a unique contrastive formulation.

Contrastive Learning Semantic Segmentation +2

The Unreasonable Effectiveness of Large Language-Vision Models for Source-free Video Domain Adaptation

1 code implementation ICCV 2023 Giacomo Zara, Alessandro Conti, Subhankar Roy, Stéphane Lathuilière, Paolo Rota, Elisa Ricci

Source-Free Video Unsupervised Domain Adaptation (SFVUDA) task consists in adapting an action recognition model, trained on a labelled source dataset, to an unlabelled target dataset, without accessing the actual source data.

Action Recognition Unsupervised Domain Adaptation

Weighted Ensemble Models Are Strong Continual Learners

1 code implementation14 Dec 2023 Imad Eddine Marouf, Subhankar Roy, Enzo Tartaglione, Stéphane Lathuilière

In this work, we study the problem of continual learning (CL) where the goal is to learn a model on a sequence of tasks, such that the data from the previous tasks becomes unavailable while learning on the current task data.

Continual Learning

Collaborating Foundation Models for Domain Generalized Semantic Segmentation

1 code implementation15 Dec 2023 Yasser Benigmim, Subhankar Roy, Slim Essid, Vicky Kalogeiton, Stéphane Lathuilière

Domain Generalized Semantic Segmentation (DGSS) deals with training a model on a labeled source domain with the aim of generalizing to unseen domains during inference.

Domain Generalization Segmentation +1

Democratizing Fine-grained Visual Recognition with Large Language Models

no code implementations24 Jan 2024 Mingxuan Liu, Subhankar Roy, Wenjing Li, Zhun Zhong, Nicu Sebe, Elisa Ricci

Identifying subordinate-level categories from images is a longstanding task in computer vision and is referred to as fine-grained visual recognition (FGVR).

Fine-Grained Visual Recognition World Knowledge

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