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arXiv 2605.15519cs.CVcs.AI
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DiffVAS: 在部分可观测环境中基于扩散的视觉主动搜索

DiffVAS: Diffusion-Guided Visual Active Search in Partially Observable Environments

Washington University in St. Louis(华盛顿大学圣路易斯分校);RISE Research Institutes of Sweden(瑞典RISE研究机构);Climate AI Nordics(北欧气候AI)

Anindya Sarkar, Srikumar Sastry, Aleksis Pirinen, Nathan Jacobs, Yevgeniy Vorobeychik

AI总结:

DiffVAS提出了一种目标条件化的策略,能够在部分可观测环境中同时搜索多种目标,提升了视觉主动搜索在现实应用中的部署能力。

摘要:

视觉主动搜索(VAS)已被引入作为一种建模框架,利用视觉线索指导空中(如基于无人机的)探索,并在广阔的地理区域中定位感兴趣区域。潜在应用包括检测稀有野生动物盗猎的热点、协助搜救任务以及揭露非法武器交易等。先前的VAS方法假设整个搜索空间在前期已知,这在受限视野和高采集成本的约束下往往不现实,且通常学习针对特定目标对象的策略,限制了同时搜索多种目标类别的能力。在本工作中,我们提出DiffVAS,一种目标条件化的策略,根据任务需求在部分可观测环境中同时搜索多种对象,从而推进视觉主动搜索策略在现实应用中的部署。DiffVAS利用扩散模型从顺序观测的局部视图中重建整个地理区域,使基于目标条件的强化学习规划模块能够有效推理并引导后续的搜索步骤。大量实验表明,DiffVAS在部分可观测环境中搜索多种对象方面表现优异,在多个数据集上显著超越了最先进的方法。

英文摘要:

Visual active search (VAS) has been introduced as a modeling framework that leverages visual cues to direct aerial (e.g., UAV-based) exploration and pinpoint areas of interest within extensive geospatial regions. Potential applications of VAS include detecting hotspots for rare wildlife poaching, aiding search-and-rescue missions, and uncovering illegal trafficking of weapons, among other uses. Previous VAS approaches assume that the entire search space is known upfront, which is often unrealistic due to constraints such as a restricted field of view and high acquisition costs, and they typically learn policies tailored to specific target objects, which limits their ability to search for multiple target categories simultaneously. In this work, we propose DiffVAS, a target-conditioned policy that searches for diverse objects simultaneously according to task requirements in partially observable environments, which advances the deployment of visual active search policies in real-world applications. DiffVAS leverages a diffusion model to reconstruct the entire geospatial area from sequentially observed partial glimpses, which enables a target-conditioned reinforcement learning-based planning module to effectively reason and guide subsequent search steps. Extensive experiments demonstrate that DiffVAS excels in searching diverse objects in partially observable environments, significantly surpassing state-of-the-art methods on several datasets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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