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We investigate whether off-the-shelf Multimodal Large Language Models (MLLMs) can tackle Online Episodic-Memory Video Question Answering (OEM-VQA) without additional training. Our pipeline converts a streaming egocentric video into a…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Giuseppe Lando , Rosario Forte , Giovanni Maria Farinella , Antonino Furnari

Self-supervised learning holds the promise of learning good representations from real-world continuous uncurated data streams. However, most existing works in visual self-supervised learning focus on static images or artificial data…

Computer Vision and Pattern Recognition · Computer Science 2025-08-13 Yanlai Yang , Mengye Ren

Lifelogging devices are spreading faster everyday. This growth can represent great benefits to develop methods for extraction of meaningful information about the user wearing the device and his/her environment. In this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2015-07-09 Marc Bolaños , Petia Radeva

Robotics, autonomous driving, augmented reality, and many embodied computer vision applications must quickly react to user-defined events unfolding in real time. We address this setting by proposing a novel task for multimodal video…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Cristobal Eyzaguirre , Eric Tang , Shyamal Buch , Adrien Gaidon , Jiajun Wu , Juan Carlos Niebles

In this work, we tackle the egocentric visual query localization (VQL), where a model should localize the query object in a long-form egocentric video. Frequent and abrupt viewpoint changes in egocentric videos cause significant object…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Joohyun Chang , Soyeon Hong , Hyogun Lee , Seong Jong Ha , Dongho Lee , Seong Tae Kim , Jinwoo Choi

Open-world video anomaly detection (OWVAD) aims to detect and explain abnormal events under different anomaly definitions, which is important for applications such as intelligent surveillance and live-streaming content moderation. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Zihao Liu , Xiaoyu Wu , Wenna Li , Jianqin Wu , Linlin Yang

Searching long egocentric videos with natural language queries (NLQ) has compelling applications in augmented reality and robotics, where a fluid index into everything that a person (agent) has seen before could augment human memory and…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Santhosh Kumar Ramakrishnan , Ziad Al-Halah , Kristen Grauman

Most existing video moment retrieval methods rely on temporal sequences of frame- or clip-level features that primarily encode global visual and semantic information. However, such representations often fail to capture fine-grained object…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Zongyao Li , Yongkang Wong , Satoshi Yamazaki , Jianquan Liu , Mohan Kankanhalli

This paper addresses the task of segmenting moving objects in unconstrained videos. We introduce a novel two-stream neural network with an explicit memory module to achieve this. The two streams of the network encode spatial and temporal…

Computer Vision and Pattern Recognition · Computer Science 2017-07-13 Pavel Tokmakov , Karteek Alahari , Cordelia Schmid

Establishing object-level correspondence between egocentric and exocentric views is essential for intelligent assistants to deliver precise and intuitive visual guidance. However, this task faces numerous challenges, including extreme…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Yijun Hu , Bing Fan , Xin Gu , Haiqing Ren , Dongfang Liu , Heng Fan , Libo Zhang

Online continual learning from data streams in dynamic environments is a critical direction in the computer vision field. However, realistic benchmarks and fundamental studies in this line are still missing. To bridge the gap, we present a…

Computer Vision and Pattern Recognition · Computer Science 2021-09-09 Jianren Wang , Xin Wang , Yue Shang-Guan , Abhinav Gupta

Event cameras are novel bio-inspired sensors, which asynchronously capture pixel-level intensity changes in the form of "events". Due to their sensing mechanism, event cameras have little to no motion blur, a very high temporal resolution…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Chiara Plizzari , Mirco Planamente , Gabriele Goletto , Marco Cannici , Emanuele Gusso , Matteo Matteucci , Barbara Caputo

In this paper we propose an end-to-end trainable deep neural network model for egocentric activity recognition. Our model is built on the observation that egocentric activities are highly characterized by the objects and their locations in…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Swathikiran Sudhakaran , Oswald Lanz

Humans can incrementally learn to do new visual detection tasks, which is a huge challenge for today's computer vision systems. Incrementally trained deep learning models lack backwards transfer to previously seen classes and suffer from a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-17 Manoj Acharya , Tyler L. Hayes , Christopher Kanan

Egocentric spatial memory (ESM) defines a memory system with encoding, storing, recognizing and recalling the spatial information about the environment from an egocentric perspective. We introduce an integrated deep neural network…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Mengmi Zhang , Keng Teck Ma , Shih-Cheng Yen , Joo Hwee Lim , Qi Zhao , Jiashi Feng

We propose a novel solution for semi-supervised video object segmentation. By the nature of the problem, available cues (e.g. video frame(s) with object masks) become richer with the intermediate predictions. However, the existing methods…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Seoung Wug Oh , Joon-Young Lee , Ning Xu , Seon Joo Kim

Video Object Segmentation (VOS) is an active research area of the visual domain. One of its fundamental sub-tasks is semi-supervised / one-shot learning: given only the segmentation mask for the first frame, the task is to provide…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Fatemeh Azimi , Benjamin Bischke , Sebastian Palacio , Federico Raue , Joern Hees , Andreas Dengel

This paper addresses the challenges of Online Action Recognition (OAR), a framework that involves instantaneous analysis and classification of behaviors in video streams. OAR must operate under stringent latency constraints, making it an…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Wei Luo , Deyu Zhang , Ying Tang , Fan Wu , Yaoxue Zhang

We present EgoCOL, an egocentric camera pose estimation method for open-world 3D object localization. Our method leverages sparse camera pose reconstructions in a two-fold manner, video and scan independently, to estimate the camera pose of…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Cristhian Forigua , Maria Escobar , Jordi Pont-Tuset , Kevis-Kokitsi Maninis , Pablo Arbeláez

Video Camouflaged Object Detection (VCOD) aims to segment objects whose appearances closely resemble their surroundings, posing a challenging and emerging task. Existing vision models often struggle in such scenarios due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Yuang Feng , Shuyong Gao , Fuzhen Yan , Yicheng Song , Lingyi Hong , Junjie Hu , Wenqiang Zhang