Open-Sourced Real-Time 3D Reconstruction via Single Camera

lukas_m_ziegler · x · 2026-07-17

Robbyant has open-sourced **LingBot-Map**: a 3D foundation model capable of **real-time 3D reconstruction** using just a single ordinary camera. ### Key Points - With streaming video input, the map updates in real-time as it moves. The author reports nearly **20 FPS** on sequences exceeding 10,000 frames. - The core technique is **Geometric Context Attention (GCA)**, which splits retained memory into three parts: coordinate anchors, local geometric windows, and compressed trajectory history. - This approach compresses the required context per frame to roughly **1/80** of brute-force methods. ### Significance - For robotics, this means building real-time world models without dedicated depth sensors or massive compute clusters. - Code, models, and related resources are fully open-sourced.

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