通用视觉自监督研究报
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2026-05-24 图像表征 · VFM · JEPA · 视频预训练
Geometry-grounded VLM · P2 · 2026-05-24

GeoWeaver:它和通用视觉自监督的关系在于:几何不应该只在 reasoning 阶段后融合,它应该先改造视觉 token 的坐标感

这篇不是 JEPA,而是 VLM 视觉 token grounding:冻结几何编码器的证据被分配给多层视觉 token。

编号2605.22558 优先级P2 类别Geometry-grounded VLM 会议arXiv 方法multi-level geometry bank + residual grounding before LLM reasoning 来源arXiv / OpenReview

先说结论。它和通用视觉自监督的关系在于:几何不应该只在 reasoning 阶段后融合,它应该先改造视觉 token 的坐标感。 这篇不是 JEPA,而是 VLM 视觉 token grounding:冻结几何编码器的证据被分配给多层视觉 token。

Figureure 2 · : Overview of GeoWeaver
Figureure 2 · : Overview of GeoWeaverFigure 2: Overview of GeoWeaver. GeoWeaver treats geometry as a representational prerequisite rather than a late fusion signal. A frozen VGGT encoder provides a multi-layer geometry bank, from which each visual token adaptively retrieves sparse geometric evidence via query-conditioned compact geometric grounding before entering the Qwen LLM. This pre-reasoning grounding process converts semantic visual tokens into geometry-grounded visual tokens for spatio-temporal reasoning.这张图概括 GeoWeaver 的整体方法流程。阅读时先看模块之间传递的训练信号,再看作者如何把目标拆成可优化的子问题。
(b) Visualization of VGGT feature responses from different layers
(b) Visualization of VGGT feature responses from different layers(b) Visualization of VGGT feature responses from different layers. Figure 1: Motivation and paradigm comparison of GeoWeaver. Top: Existing geometry-enhanced VLMs mainly introduce geometry through pre-fusion or LLM-side fusion, while GeoWeaver grounds visual tokens before language reasoning. Bottom: VGGT feature maps from different layers exhibit heterogeneous spatial responses, indicating that multi-layer geometry does not provide a uniform signal. This motivates our design of treating geometry features as a multi-level evidence bank.这张图/表用于判断 GeoWeaver 的实验收益来自哪里。重点看替换、消融或跨模型设置下趋势是否一致,而不是只看单个最高分。

核心问题

它和通用视觉自监督的关系在于:几何不应该只在 reasoning 阶段后融合,它应该先改造视觉 token 的坐标感。

方法拆解

multi-level geometry bank + residual grounding before LLM reasoning

主要贡献

这篇不是 JEPA,而是 VLM 视觉 token grounding:冻结几何编码器的证据被分配给多层视觉 token。

实验看点

实验部分建议重点看两类证据:一是作者是否把方法收益和更强数据、更长训练、更大模型区分开;二是跨模型、跨数据或跨任务迁移是否还能保留同样趋势。

局限与读法

这篇论文的结论需要结合任务设置、训练数据规模和消融实验一起看;不要只凭单个指标判断它对通用视觉表征的价值。