GenCAD: AI Model Generates 3D CAD Models and Command History from Input Images

Summary

GenCAD is an image-conditional computer-aided design (CAD) generation model that takes an input image and produces a complete 3D CAD model along with its full parameterized CAD command history and CAD program. The model addresses the challenge of training AI models on complex CAD data structures like boundary representation (B-rep) by using transformer-based contrastive representation and diffusion priors. Unlike common approaches that rely on simplified representations (meshes, voxels, point clouds) which sacrifice accuracy and modifiability, GenCAD aims to generate directly usable CAD outputs.