Evidence-gated multimodal parsing and vectorization of architectural floor plans

2026-09-21

AI Summary

该研究通过引入SALI-FP，一种证据门控多模态管道，解决了建筑平面图中图形异质性带来的数字化难题，实现了从平面图到可审查的语义地图、对象、向量及关系记录的有效转换。

Abstract

Architectural floor plans remain a high-friction barrier to archive digitization and early design-model preparation because heterogeneous graphics encode spatial semantics and editable geometry together. We introduce SALI-FP, an evidence-gated multimodal pipeline that converts a plan into reviewable semantic maps, objects, vectors, and relation records while constraining local revisions by image evidence. In a full production audit of 11,534 heterogeneous plans, SALI-FP produced structured outputs for every plan, including 752,510 valid polygon-bearing objects. The same output form has supported initial drawing digitization and design-model preparation in practical design work. Public-benchmark calibration is paired with a 30-case matched visual evidence set in Appendix F, where room-scale coverage, openings, oblique boundaries, and circulation continuity can be inspected directly. SALI-FP offers an engineering-oriented interpretation-to-geometry workflow for reviewed CAD/BIM preparation and existing-building information recovery.

Problem

• architectural floor plans
• digitization
• design-model preparation
• spatial semantics
• editable geometry

Innovation

• evidence-gated
• multimodal pipeline
• semantic maps
• vectorization
• CAD/BIM preparation