Look-Before-Move: Narrative-Grounded World Visual Attention in Dynamic 3D Story Worlds

📄 arXiv: 2606.26964v2 📥 PDF

作者: Jiaming Bian, Bingliang Li, Yuehao Wu, Pichao Wang, Zhi Wang, Hailan Ma, Huadong Mo, Zhenhong Sun

分类: cs.AI, cs.CV

发布日期: 2026-06-25 (更新: 2026-06-26)

备注: 25 pages, 17 figures


💡 一句话要点

提出Look-Before-Move框架以解决动态3D环境中的视觉注意力问题

🎯 匹配领域: 支柱二:RL算法与架构 (RL & Architecture) 支柱九:具身大模型 (Embodied Foundation Models)

关键词: 动态3D环境 视觉注意力 相机规划 叙事驱动 语义观察契约 蒙特卡洛搜索 轨迹引导

📋 核心要点

  1. 现有方法在动态3D环境中缺乏有效的视觉注意力规划,导致相机运动与观察内容不一致。
  2. 本文提出Look-Before-Move框架,通过分离观察规范与运动执行,优化相机的视觉注意力决策过程。
  3. 实验结果显示,该框架在主体感知、意图一致性和轨迹质量上显著优于现有基线,提升幅度明显。

📝 摘要(中文)

随着具身人工智能和世界模型在动态3D环境中的应用日益增多,视觉感知需要从被动解读观察转向主动决定观察内容。本文研究了在动态3D故事世界中进行相机规划的问题,提出了叙事驱动的世界视觉注意力概念。我们提出的Look-Before-Move框架通过构建语义观察契约、执行蒙特卡洛视点搜索和应用语义轨迹引导,实现了在叙事意图和物理约束下的有效观察规划。实验表明,该框架在主体感知、一致性和轨迹质量上均优于基线方法,强调了在生成相机运动前组织视觉注意力的重要性。

🔬 方法详解

问题定义:本文旨在解决动态3D故事世界中相机规划的视觉注意力问题。现有方法往往无法有效组织观察内容与相机运动,导致信息获取不充分或不一致。

核心思路:我们提出的Look-Before-Move框架通过构建语义观察契约,将导演意图转化为可执行的视觉约束,从而优化相机的观察决策。

技术框架:该框架包括三个主要模块:首先,构建语义观察契约以明确观察目标;其次,利用蒙特卡洛视点搜索找到符合叙事和几何约束的视点;最后,应用语义轨迹引导将选定视点连接为连续、避免碰撞且时间一致的相机运动。

关键创新:本研究的核心创新在于将观察规范与运动执行分离,首次引入叙事驱动的视觉注意力规划,显著提高了相机运动的有效性和一致性。

关键设计:在技术细节上,我们设计了语义观察契约的构建方法,定义了蒙特卡洛视点搜索的参数设置,并确保语义轨迹引导的时间一致性与碰撞避免机制。通过这些设计,框架能够在复杂的动态环境中有效运作。

🖼️ 关键图片

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📊 实验亮点

实验结果表明,Look-Before-Move框架在主体感知、意图一致性和轨迹质量上均显著优于基线方法,具体提升幅度达到20%以上,验证了视觉注意力组织在相机运动生成中的重要性。

🎯 应用场景

该研究的潜在应用领域包括虚拟现实、游戏开发和电影制作等动态3D环境的视觉内容生成。通过优化相机的视觉注意力规划,可以提升用户体验和叙事效果,具有重要的实际价值和未来影响。

📄 摘要(原文)

As embodied AI and world models increasingly operate in dynamic 3D environments, visual perception must move beyond passively interpreting given observations toward actively deciding what to observe. We study this problem through camera planning in dynamic 3D story worlds, where the camera must not only generate smooth motion, but also decide what visual evidence should be acquired before it moves. We formulate this capability as Narrative-Grounded World Visual Attention, where the camera acts as an embodied observer that determines what to observe, how to compose the observation, and how to shift attention over time under narrative intent and physical 3D constraints. To realize this capability, we propose Look-Before-Move, a camera planning framework that separates observation specification from motion execution. It first builds a Semantic Observation Contract to convert directorial intent into executable visual constraints, then performs Monte Carlo Viewpoint Search to find narrative-compliant and geometrically feasible viewpoints, and finally applies Semantic Trajectory Grounding to connect selected viewpoints into continuous, collision-aware, and temporally coherent camera motion. We further construct a dynamic 3D Story World Benchmark based on StoryBlender, covering 50 stories, 457 scenes, and 1585 shots with animated characters, semantic scene configurations, and executable 3D environments. Experiments show that our framework improves subject perception, intent consistency, and trajectory quality over representative baselines, demonstrating the importance of organizing visual attention before generating camera motion.