Functional-SLAM: First SLAM Framework to Maintain Functional Scene Graphs Online for Robotic Interaction

zhenjun_zhao · x · 2026-09-11

Tsinghua researchers present Functional-SLAM, the first framework that continuously maintains a functional scene graph as an online SLAM state.

• Existing SLAM systems lack the functional relation modeling needed for fine-grained robotic interaction, while prior functional 3D scene graph methods rely on offline reconstruction
• The method combines anchor-keyframe geometry with functional-context constraints for persistent nodes, accumulates multi-frame evidence for stable functional edges, and uses functional topology to supplement visual loop closure in repetitive or texture-degraded scenes
• Experiments show stable online functional mapping with much faster runtime than offline methods, plus improved pose accuracy from topology-assisted loop closure
• Code is publicly available

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