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We introduce PerceptionComp, a manually annotated benchmark for complex, long-horizon, perception-centric video reasoning. PerceptionComp is designed so that no single moment is sufficient: answering each question requires multiple…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Shaoxuan Li , Zhixuan Zhao , Hanze Deng , Zirun Ma , Shulin Tian , Zuyan Liu , Yushi Hu , Haoning Wu , Yuhao Dong , Benlin Liu , Ziwei Liu , Ranjay Krishna

We introduce Ego-R1, a novel framework for reasoning over ultra-long (i.e., in days and weeks) egocentric videos, which leverages a structured Chain-of-Tool-Thought (CoTT) process, orchestrated by an Ego-R1 Agent trained via reinforcement…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Shulin Tian , Ruiqi Wang , Hongming Guo , Penghao Wu , Yuhao Dong , Xiuying Wang , Jingkang Yang , Hao Zhang , Hongyuan Zhu , Ziwei Liu

Long-term agent memory is increasingly multimodal, yet existing evaluations rarely test whether agents preserve the visual evidence needed for later reasoning. In prior work, many visually grounded questions can be answered using only…

Long-term conversational memory in practical LLM applications is inherently collaborative: information is produced by multiple participants, scattered across groups and channels, revised over time, and implicitly grounded in roles and…

Computation and Language · Computer Science 2026-03-12 Chuanrui Hu , Tong Li , Xingze Gao , Hongda Chen , Yi Bai , Dannong Xu , Tianwei Lin , Xiaohong Li , Yunyun Han , Jian Pei , Yafeng Deng

Long-form multimodal video understanding requires integrating vision, speech, and ambient audio with coherent long-range reasoning. Existing benchmarks emphasize either temporal length or multimodal richness, but rarely both and while some…

Egocentric video understanding requires procedural reasoning under partial observability and continuously shifting viewpoints. Current multimodal large language models (MLLMs) struggle with this setting, often generating plausible but…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yogesh Kulkarni , Pooyan Fazli

Recent advances in video large language models have demonstrated strong capabilities in understanding short clips. However, scaling them to hours- or days-long videos remains highly challenging due to limited context capacity and the loss…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Woongyeong Yeo , Kangsan Kim , Jaehong Yoon , Sung Ju Hwang

We explore how reconciling several foundation models (large language models and vision-language models) with a novel unified memory mechanism could tackle the challenging video understanding problem, especially capturing the long-term…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Yue Fan , Xiaojian Ma , Rujie Wu , Yuntao Du , Jiaqi Li , Zhi Gao , Qing Li

Real-world long video understanding requires models to perform continuous tracking, information integration and memory retention over massive temporal spans within extreme video durations. Mastering this intense cognitive load constitutes…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Haichen He , Jiayi Zhou , Sifeng Shang , Yihan Hu , Yuanhan Zhang , Kaiyang Zhou

Despite extensive efforts on egocentric video datasets and benchmarks, understanding users' internal states, which is crucial for enabling seamless AI assistant experiences, remains largely overlooked. In this work, we introduce…

Egocentric video reasoning centers on an unobservable agent behind the camera who dynamically shapes the environment, requiring inference of hidden intentions and recognition of fine-grained interactions. This core challenge limits current…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Baoqi Pei , Yifei Huang , Jilan Xu , Yuping He , Guo Chen , Fei Wu , Yu Qiao , Jiangmiao Pang

Egocentric AI assistants in real-world settings must process multi-modal inputs (video, audio, text), respond in real time, and retain evolving long-term memory. However, existing benchmarks typically evaluate these abilities in isolation,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Jiaqi Yan , Ruilong Ren , Jingren Liu , Shuning Xu , Ling Wang , Yiheng Wang , Xinlin Zhong , Yun Wang , Long Zhang , Xiangyu Chen , Changzhi Sun , Jixiang Luo , Dell Zhang , Hao Sun , Chi Zhang , Xuelong Li

Understanding human tasks through video observations is an essential capability of intelligent agents. The challenges of such capability lie in the difficulty of generating a detailed understanding of situated actions, their effects on…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Baoxiong Jia , Ting Lei , Song-Chun Zhu , Siyuan Huang

We present EgoBlind, the first egocentric VideoQA dataset collected from blind individuals to evaluate the assistive capabilities of contemporary multimodal large language models (MLLMs). EgoBlind comprises 1,392 first-person videos from…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Junbin Xiao , Nanxin Huang , Hao Qiu , Zhulin Tao , Xun Yang , Richang Hong , Meng Wang , Angela Yao

Human activity is moderated by norms; however, supervision for normative reasoning is sparse, particularly where norms are physically- or socially-grounded. We thus present EGONORMIA $\|\epsilon\|$, comprising 1,853 (200 for…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 MohammadHossein Rezaei , Yicheng Fu , Phil Cuvin , Caleb Ziems , Yanzhe Zhang , Hao Zhu , Diyi Yang

Most existing benchmarks for understanding egocentric vision focus primarily on daytime scenarios, overlooking the low-light conditions that are inevitable in real-world applications. To investigate this gap, we present EgoNight, the first…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Deheng Zhang , Yuqian Fu , Runyi Yang , Yang Miao , Tianwen Qian , Xu Zheng , Guolei Sun , Ajad Chhatkuli , Xuanjing Huang , Yu-Gang Jiang , Luc Van Gool , Danda Pani Paudel

Large language models (LLMs) have demonstrated remarkable progress in understanding long-context inputs. However, benchmarks for evaluating the long-context reasoning abilities of LLMs fall behind the pace. Existing benchmarks often focus…

Computation and Language · Computer Science 2025-11-19 Zhan Ling , Kang Liu , Kai Yan , Yifan Yang , Weijian Lin , Ting-Han Fan , Lingfeng Shen , Zhengyin Du , Jiecao Chen

Egocentric videos provide a unique perspective into individuals' daily experiences, yet their unstructured nature presents challenges for perception. In this paper, we introduce AMEGO, a novel approach aimed at enhancing the comprehension…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Gabriele Goletto , Tushar Nagarajan , Giuseppe Averta , Dima Damen

Humans constantly reason about 3D proximity, the relations between their body and surrounding objects, to guide perception and action in daily life. Whether multimodal large language models (MLLMs) can perform such embodied 3D reasoning…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Jinzhao Li , Yinuo Chen , Dongxu Piao , Panwang Pan , Yifan Yu , Dong Wang , Honglei Yan , Liang Yue , Shaofei Wang , Yixin Chen , Siyuan Huang , Miao Liu

Recent advances in Multimodal Large Language Models (MLLMs) have significantly pushed the frontier of egocentric video question answering (EgocentricQA). However, existing benchmarks and studies are mainly limited to common daily activities…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Yanjun Li , Yuqian Fu , Tianwen Qian , Qi'ao Xu , Silong Dai , Danda Pani Paudel , Luc Van Gool , Xiaoling Wang