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CAD-Editor: A Locate-then-Infill Framework with Automated Training Data Synthesis for Text-Based CAD Editing

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arxiv 2502.03997 v2 pith:R3MKNUHH submitted 2025-02-06 cs.CV

CAD-Editor: A Locate-then-Infill Framework with Automated Training Data Synthesis for Text-Based CAD Editing

classification cs.CV
keywords modelstext-basededitingcad-editordatadesignframeworkautomated
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Computer Aided Design (CAD) is indispensable across various industries. \emph{Text-based CAD editing}, which automates the modification of CAD models based on textual instructions, holds great potential but remains underexplored. Existing methods primarily focus on design variation generation or text-based CAD generation, either lacking support for text-based control or neglecting existing CAD models as constraints. We introduce \emph{CAD-Editor}, the first framework for text-based CAD editing. To address the challenge of demanding triplet data with accurate correspondence for training, we propose an automated data synthesis pipeline. This pipeline utilizes design variation models to generate pairs of original and edited CAD models and employs Large Vision-Language Models (LVLMs) to summarize their differences into editing instructions. To tackle the composite nature of text-based CAD editing, we propose a locate-then-infill framework that decomposes the task into two focused sub-tasks: locating regions requiring modification and infilling these regions with appropriate edits. Large Language Models (LLMs) serve as the backbone for both sub-tasks, leveraging their capabilities in natural language understanding and CAD knowledge. Experiments show that CAD-Editor achieves superior performance both quantitatively and qualitatively. The code is available at \url {https://github.com/microsoft/CAD-Editor}.

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Forward citations

Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. neuralCAD-Edit: An Expert Benchmark for Multimodal-Instructed 3D CAD Model Editing

    cs.CV 2026-04 unverdicted novelty 8.0

    neuralCAD-Edit benchmark shows even the best foundation model (GPT 5.2) scores 53% lower than human CAD experts in acceptance trials for multimodal-instructed 3D model edits.

  2. BIM-Edit: Benchmarking Large Language Models for IFC-Based Building Information Modeling

    cs.AI 2026-06 unverdicted novelty 7.0

    BIM-Edit benchmark finds best LLM scores only 49.5% average across geometric, semantic, and topological metrics on 324 IFC editing tasks, with no model fully solving more than 3.4%.

  3. IterCAD: An Iterative Multimodal Agent for Visually-Grounded CAD Generation and Editing

    cs.AI 2026-06 unverdicted novelty 7.0

    IterCAD introduces a closed-loop multimodal agent for CAD generation and editing, trained via progressive SFT and geometry-aware RL with viable-prefix masking, and evaluated on IterCAD-Bench using a new CD-TR curve an...

  4. BrepForge: Factorized B-rep Synthesis via Wireframe Composition and Boundary-Conditioned Surface Instantiation

    cs.GR 2026-05 unverdicted novelty 7.0

    BrepForge factorizes B-rep synthesis into face-aware autoregressive wireframe composition followed by boundary-conditioned surface instantiation using learning-free geometric priors.

  5. PR-CAD: Progressive Refinement for Unified Controllable and Faithful Text-to-CAD Generation with Large Language Models

    cs.CL 2026-03 unverdicted novelty 7.0

    PR-CAD unifies text-to-CAD generation and editing via progressive refinement with LLMs, a new interaction dataset, and RL-enhanced reasoning to achieve better controllability and faithfulness.

  6. Autoregressive B-Rep Shape Generation with Parametric Surfaces

    cs.CV 2026-07 conditional novelty 6.0

    An autoregressive transformer generates B-Rep CAD faces directly as native parametric surfaces from point-cloud conditions, then assembles a valid solid by surface intersection.

  7. IterCAD: An Iterative Multimodal Agent for Visually-Grounded CAD Generation and Editing

    cs.AI 2026-06 unverdicted novelty 6.0

    IterCAD is a multimodal agent framework using progressive SFT and geometry-aware RL for CAD tasks, with a new data pipeline, IterCAD-Bench, and CD-TR metric showing outperformance in executability and precision.