GeoEyes: 面向超高清遥感影像证据驱动理解的按需视觉聚焦
GeoEyes: On-Demand Visual Focusing for Evidence-Grounded Understanding of Ultra-High-Resolution Remote Sensing Imagery
AI总结:
GeoEyes通过分阶段训练框架,结合冷启动数据集和代理强化学习方法,解决超高清遥感影像中证据获取不足的问题,提升视觉问答任务的准确性。
摘要:
基于图像的思维范式使多模态大语言模型(MLLMs)能够通过缩放工具主动探索视觉场景。这对于超高清(UHR)遥感视觉问答(VQA)至关重要,因为任务相关的线索稀疏且微小。然而,我们发现现有支持缩放的MLLMs存在一致的失败模式:工具使用同质化,即工具调用崩溃为任务无关的模式,限制了有效证据的获取。为此,我们提出了GeoEyes,一个分阶段训练框架,包括(1)一个冷启动的SFT数据集,超高清缩放链(UHR-CoZ),涵盖多样化的缩放模式,以及(2)一种代理强化学习方法AdaZoom-GRPO,该方法在缩放交互过程中明确奖励证据获取和答案改进。最终模型学会按需缩放并具备适当的停止行为,在UHR遥感基准上取得显著提升,准确率达到XLRS-Bench的54.23%。
英文摘要:
The "thinking-with-images" paradigm enables multimodal large language models (MLLMs) to actively explore visual scenes via zoom-in tools. This is essential for ultra-high-resolution (UHR) remote sensing VQA, where task-relevant cues are sparse and tiny. However, we observe a consistent failure mode in existing zoom-enabled MLLMs: Tool Usage Homogenization, where tool calls collapse into task-agnostic patterns, limiting effective evidence acquisition. To address this, we propose GeoEyes, a staged training framework consisting of (1) a cold-start SFT dataset, UHR Chain-of-Zoom (UHR-CoZ), which covers diverse zooming regimes, and (2) an agentic reinforcement learning method, AdaZoom-GRPO, that explicitly rewards evidence gain and answer improvement during zoom interactions. The resulting model learns on-demand zooming with proper stopping behavior and achieves substantial improvements on UHR remote sensing benchmarks, with 54.23% accuracy on XLRS-Bench.
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