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MM-Ego: Towards Building Egocentric Multimodal LLMs for Video QA

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arxiv 2410.07177 v2 pith:NCTW6RIU submitted 2024-10-09 cs.CV cs.AIcs.LG

classification cs.CVcs.AIcs.LG
keywords egocentricvideomultimodalunderstandingdatamodelvideosvisual
verification ladder T0 review T1 audit T2 compute T3 formal
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This research aims to comprehensively explore building a multimodal foundation model for egocentric video understanding. To achieve this goal, we work on three fronts. First, as there is a lack of QA data for egocentric video understanding, we automatically generate 7M high-quality QA samples for egocentric videos ranging from 30 seconds to one hour long in Ego4D based on human-annotated data. This is one of the largest egocentric QA datasets. Second, we contribute a challenging egocentric QA benchmark with 629 videos and 7,026 questions to evaluate the models' ability in recognizing and memorizing visual details across videos of varying lengths. We introduce a new de-biasing evaluation method to help mitigate the unavoidable language bias present in the models being evaluated. Third, we propose a specialized multimodal architecture featuring a novel "Memory Pointer Prompting" mechanism. This design includes a \textit{global glimpse} step to gain an overarching understanding of the entire video and identify key visual information, followed by a fallback step that utilizes the key visual information to generate responses. This enables the model to more effectively comprehend extended video content. With the data, benchmark, and model, we build MM-Ego, an egocentric multimodal LLM that shows powerful performance on egocentric video understanding.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Pro$^2$Assist: Continuous Step-aware Proactive Assistance with Multi-modal Egocentric Perception for Long-horizon Procedural Tasks

    cs.AI 2026-05 unverdicted novelty 7.0 of 10

    Pro²Assist uses multimodal egocentric perception from AR glasses to track fine-grained progress in long-horizon procedural tasks and deliver timely proactive assistance, outperforming baselines by over 21% in action u...

  2. EgoTextVQA: Towards Egocentric Scene-Text Aware Video Question Answering

    cs.CV 2025-02 conditional novelty 7.0 of 10

    EgoTextVQA, a new 7K-question benchmark for egocentric scene-text aware video QA, shows that all ten tested multimodal LLMs, including Gemini 1.5 Pro, answer fewer than 35% correctly.

  3. Do Agents Dream of False Memories? Black-box Visual Attacks on Long-term Memory in Multimodal AI Agents

    cs.CR 2026-07 reject novelty 6.0 of 10

    Lucid shows that imperceptible image perturbations can make multimodal agents misremember past events with 61.6% poisoning and 58.4% injection success.

  4. EgoIntent: A Pre-Outcome Micro-Step Benchmark for Understanding What, Why, and Next

    cs.CV 2026-03 conditional novelty 6.0 of 10

    A step-level egocentric-video benchmark for What/Why/Next intent shows current multimodal models score only about 33/100, though some supporting experiments are missing from the paper.

  5. Reinforcing Egocentric Spatial Perception in Multimodal Large Language Models via Ego Scene Augmentation

    cs.CV 2026-07 conditional novelty 5.0 of 10

    Ego Scene Augmentation boosts egocentric VQA accuracy by 8.14% (indoor) and 8.72% (outdoor) by injecting a Depth-Anything-derived object/depth/text scene graph into the MLLM prompt.

  6. The Repeated-Stimulus Confound in Electroencephalography

    q-bio.NC 2025-08 unverdicted novelty 5.0 of 10

    The repeated-stimulus confound, where models are trained and tested on repeated presentations of identical stimuli, inflates reported EEG decoding accuracies by an estimated 4.46 to 7.42 percent.

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