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sunsleaf committed Nov 23, 2024
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Expand Up @@ -82,26 +82,26 @@ <h1 class="title is-1 publication-title">Solving Zero-Shot 3D Visual Grounding a
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Expand Down Expand Up @@ -137,15 +137,14 @@ <h1 class="title is-1 publication-title">Solving Zero-Shot 3D Visual Grounding a
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<h2 class="title is-3">Abstract</h2>
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3D visual grounding (3DVG) aims to locate objects in a 3D scene with natural language descriptions.
Supervised methods have achieved decent accuracy, but have a closed vocabulary and limited language
understanding ability. Zero-shot methods mostly utilize large language models (LLMs) to handle natural
language descriptions, yet suffer from slow inference speed. To address these problems, in this work, we
propose a zero-shot method that reformulates the 3DVG task as a Constraint Satisfaction Problem (CSP),
where the variables and constraints represent objects and their spatial relations, respectively. This
allows a global reasoning of all relevant objects, producing grounding results of both the target and
anchor objects. Moreover, we demonstrate the flexibility of our framework by handling negation- and
counting-based queries with only minor extra coding efforts. Our system, Constraint Satisfaction Visual
Grounding (CSVG), has been extensively evaluated on the public datasets ScanRefer and Nr3D datasets using
only open-source LLMs. Results show the effectiveness of CSVG and superior grounding accuracy over current
state-of-the-art zero-shot 3DVG methods with improvements of +7.0% ([email protected] score) and +11.2% on the
ScanRefer and Nr3D datasets, respectively.
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