5-4B on four metric spatial reasoning tasks from the ARKitScenes subset of ReVSI-Bench: absolute distance, object size, relative distance and relative direction.
Geometric tools let a small vision-language model measure 3D scenes
Explicit detection, coordinate projection and geometric solvers substantially improved distance and direction estimates, while detector errors continued to limit size measurement.
Academic
Technical University of Munich
Research Digest··2 min read
5-4B with callable tools for 3D object detection, metric depth, coordinate projection and deterministic spatial calculations.
Why this paper
From Technical University of Munich
In one line
Tool-augmented VLMs improve metric spatial reasoning on distance and direction but not object size.
What we could check
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- ✓Limitations stated by the authors
- ✓Reports numbers on named benchmarks (4 benchmarks)
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