arXiv Computer Vision By Leqian Ding, Junning Qiu, Manwen Yang, Yu Guo, Fei Wang

TempoGround: State-Aware Streaming Visual Grounding with Vision-Language Models

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TempoGround is a vision‑language model–native framework for streaming visual grounding that detects cross‑frame object correspondence and explicitly models object presence states. It uses a curriculum prediction mechanism to resolve 2D instance association, predict object entry, continuation, or exit, decode 2D boxes, and lift them to 3D camera‑frame boxes. The approach is further refined with Streaming Grounding Reinforcement, which optimizes grounding, identity, and consistency rewards, and achieves significant improvements on multiple streaming visual grounding benchmarks.

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