Similarity Search for 3D CAD Databases: Methodological Approaches and Industrial Application at Carraro Group

The thesis investigates methods and applications of similarity search within 3D CAD databases, with the aim of supporting the retrieval and reuse of existing components in industrial design processes. In the first part, the work presents an overview of methodological approaches to 3D similarity search, including the role of geometric descriptors, feature extraction techniques, and the distinction between global and local representations of shape. The study highlights how these methods can improve model retrieval efficiency and accuracy in large-scale CAD archives. The second part focuses on an industrial case study carried out at Carraro Group, a company specializing in the design and production of transmissions and axles for agricultural and construction machinery. The project involved the integration and evaluation of a Model Search software for CAD data management, aimed at promoting component reuse, optimizing the design workflow, and standardizing the company’s technical database.