3D Vision and Language Pretraining with Large-Scale Synthetic Data

• URL: http://arxiv.org/abs/2407.06084v1
• Date: Mon, 8 Jul 2024 16:26:52 GMT
• Title: 3D Vision and Language Pretraining with Large-Scale Synthetic Data
• Authors: Dejie Yang, Zhu Xu, Wentao Mo, Qingchao Chen, Siyuan Huang, Yang Liu,
• Abstract summary: 3D Vision-Language Pre-training aims to provide a pre-train model which can bridge 3D scenes with natural language. We construct SynVL3D, a comprehensive synthetic scene-text corpus with 10K indoor scenes and 1M descriptions at object, view, and room levels. We propose a synthetic-to-real domain adaptation in downstream task fine-tuning process to address the domain shift.
• Score: 28.45763758308814
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 3D Vision-Language Pre-training (3D-VLP) aims to provide a pre-train model which can bridge 3D scenes with natural language, which is an important technique for embodied intelligence. However, current 3D-VLP datasets are hindered by limited scene-level diversity and insufficient fine-grained annotations (only 1.2K scenes and 280K textual annotations in ScanScribe), primarily due to the labor-intensive of collecting and annotating 3D scenes. To overcome these obstacles, we construct SynVL3D, a comprehensive synthetic scene-text corpus with 10K indoor scenes and 1M descriptions at object, view, and room levels, which has the advantages of diverse scene data, rich textual descriptions, multi-grained 3D-text associations, and low collection cost. Utilizing the rich annotations in SynVL3D, we pre-train a simple and unified Transformer for aligning 3D and language with multi-grained pretraining tasks. Moreover, we propose a synthetic-to-real domain adaptation in downstream task fine-tuning process to address the domain shift. Through extensive experiments, we verify the effectiveness of our model design by achieving state-of-the-art performance on downstream tasks including visual grounding, dense captioning, and question answering.

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