arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2605.08064cs.CV

Proxy3D: 通过语义聚类和对齐实现视觉-语言模型的高效3D表示

Proxy3D: Efficient 3D Representations for Vision-Language Models via Semantic Clustering and Alignment

Tsinghua University(清华大学);Panasonic AI Lab(松下人工智能实验室);Panasonic DX-CPS(松下DX-CPS);UC Berkeley(伯克利大学)

Jerry Jiang, Haowen Sun, Denis Gudovskiy, Yohei Nakata, Tomoyuki Okuno, Kurt Keutzer, Wenzhao Zheng

AI总结:

本文提出Proxy3D方法,通过语义和几何编码器提取场景特征并进行语义感知聚类,生成紧凑且全面的3D代理表示,提升视觉-语言模型在3D视觉问答、视觉定位和空间智能任务中的性能。

摘要:

空间智能在视觉-语言模型(VLMs)中吸引了研究兴趣,因为需要在3D世界中推理的实用需求。尽管有令人鼓舞的结果,大多数现有方法仍遵循VLMs中的传统2D管道,并使用像素对齐的表示来处理视觉模态。然而,基于对应关系的模型通常缺乏隐含的3D场景理解,而基于表示的模型在视觉序列串接中效率低下。为此,我们提出了Proxy3D方法,通过紧凑且全面的3D代理表示来处理视觉模态。仅给定视频帧作为输入,我们使用语义和几何编码器提取场景特征,然后进行语义感知聚类以获得3D空间中的代理集合。对于表示对齐,我们进一步整理了SpaceSpan数据集,并应用多阶段训练以采用所提出的3D代理表示与VLM。当使用较短的序列进行视觉信息时,我们的方法在3D视觉问答、视觉定位和通用空间智能基准上实现了竞争性或最先进的性能。

英文摘要:

Spatial intelligence in vision-language models (VLMs) attracts research interest with the practical demand to reason in the 3D world.Despite promising results, most existing methods follow the conventional 2D pipeline in VLMs and use pixel-aligned representations for the vision modality. However, correspondence-based models with implicit 3D scene understanding often fail to achieve spatial consistency, and representation-based models with 3D geometric priors lack efficiency in vision sequence serialization. To address this, we propose a Proxy3D method with compact yet comprehensive 3D proxy representations for the vision modality. Given only video frames as input, we employ semantic and geometric encoders to extract scene features and then perform their semantic-aware clustering to obtain a set of proxies in the 3D space. For representation alignment, we further curate the SpaceSpan dataset and apply multi-stage training to adopt the proposed 3D proxy representations with the VLM. When using shorter sequences for vision information, our method achieves competitive or state-of-the-art performance in 3D visual question answering, visual grounding and general spatial intelligence benchmarks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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