# Penn Researchers Combine Agentic Reasoning With Geometry Models to Build 3D Scenes From a Single Image

The HARMONY framework uses a hierarchical chain of thought to decompose a photograph before handing geometry to a visual foundation model, an approach that treats scene reconstruction as a planning problem.

- Published: 2026-09-23T11:26:37.007Z
- Canonical: https://polylog.news/ai/2026-09-23/penn-researchers-combine-agentic-reasoning-with-geometry-mod
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news), [arXiv cs.AI](https://arxiv.org/abs/2609.25036)

A team at the University of Pennsylvania has published HARMONY, a framework that converts a single image into a 3D scene by combining a hierarchical chain-of-thought controller with a visual geometry foundation model, according to the autho…

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