activity
20202025
most citedSTEm-Seg: Spatio-temporal Embeddings for Instance Segmentation in Videos

159 citations · 183 across the 10 of their papers we have counts for

collaborators

10 papers

cs.CV2025

LSVOS 2025 Challenge Report: Recent Advances in Complex Video Object Segmentation

Chang Liu, Henghui Ding, Kaining Ying +46

This report presents an overview of the 7th Large-scale Video Object Segmentation (LSVOS) Challenge held in conjunction with ICCV 2025. Besides the two traditional tracks of LSVOS…

cs.CV2025

Sa2VA-i: Improving Sa2VA Results with Consistent Training and Inference

Alexey Nekrasov, Ali Athar, Daan de Geus +2

Sa2VA is a recent model for language-guided dense grounding in images and video that achieves state-of-the-art results on multiple segmentation benchmarks and that has become widel…

cs.CV2025

How Important are Videos for Training Video LLMs?

George Lydakis, Alexander Hermans, Ali Athar +2

Research into Video Large Language Models (LLMs) has progressed rapidly, with numerous models and benchmarks emerging in just a few years. Typically, these models are initialized w…

cs.CV2023

TarViS: A Unified Approach for Target-based Video Segmentation

Ali Athar, Alexander Hermans, Jonathon Luiten +2

The general domain of video segmentation is currently fragmented into different tasks spanning multiple benchmarks. Despite rapid progress in the state-of-the-art, current methods…

cs.CV2022★ 2 cited

BURST: A Benchmark for Unifying Object Recognition, Segmentation and Tracking in Video

Ali Athar, Jonathon Luiten, Paul Voigtlaender +4

Multiple existing benchmarks involve tracking and segmenting objects in video e.g., Video Object Segmentation (VOS) and Multi-Object Tracking and Segmentation (MOTS), but there is…

cs.CV2022

Differentiable Soft-Masked Attention

Ali Athar, Jonathon Luiten, Alexander Hermans +2

Transformers have become prevalent in computer vision due to their performance and flexibility in modelling complex operations. Of particular significance is the 'cross-attention'…

cs.CV2021★ 18 cited

HODOR: High-level Object Descriptors for Object Re-segmentation in Video Learned from Static Images

Ali Athar, Jonathon Luiten, Alexander Hermans +2

Existing state-of-the-art methods for Video Object Segmentation (VOS) learn low-level pixel-to-pixel correspondences between frames to propagate object masks across video. This req…

cs.CV2021

D^2Conv3D: Dynamic Dilated Convolutions for Object Segmentation in Videos

Christian Schmidt, Ali Athar, Sabarinath Mahadevan +1

Despite receiving significant attention from the research community, the task of segmenting and tracking objects in monocular videos still has much room for improvement. Existing w…

cs.CV2020★ 4 cited

Making a Case for 3D Convolutions for Object Segmentation in Videos

Sabarinath Mahadevan, Ali Athar, Aljoša Ošep +3

The task of object segmentation in videos is usually accomplished by processing appearance and motion information separately using standard 2D convolutional networks, followed by a…

cs.CV2020★ 159 cited

STEm-Seg: Spatio-temporal Embeddings for Instance Segmentation in Videos

Ali Athar, Sabarinath Mahadevan, Aljoša Ošep +2

Existing methods for instance segmentation in videos typically involve multi-stage pipelines that follow the tracking-by-detection paradigm and model a video clip as a sequence of…