The aim of M3D is to examine the entire process chain from mobile 3D acquisition to 3D print in the industrial field. The vast potential of location-independent mobile devices and the so-called “cloud” will be analyzed by means of a specific application scenario and technologies be optimized. Using the example of components and workpieces in industrial applications, their potential will be dissected conceptually and technologically and demonstrated in a prototypical form.
The process chain from mobile 3D acquisition to 3D print is the following:
- On-site acquisition and measurement of necessary components with mobile terminals,
- Identification of scanned objects in component databases,
- Comparison of scanned objects with available model data, and
- Creation of components by means of additive production processes.
Each step profits from the connection of every single device to a decentralized storage device, the so-called “cloud”, via fast data communication networks.
The project is structured into different work packages; each is concerned with a particular step in the process chain. The Competence Center Cultural Heritage Digitization at Fraunhofer IGD contributes to two of them by developing the mobile acquisition and reconstruction in 3D (WP3) as well as by modelling data for the additive production (WP5).
The work package “Mobile 3D acquisition and 3D reconstruction” (WP3) comprises the acquisition and 3D reconstruction of a scene or a static object respectively by means of a mobile terminal (smartphone, tablet etc.). The acquired data and the 3D model are subsequently used for the object identification in databases (WP4) and the generation of printable model data (WP5). In this step, especially image-based reconstruction processes such as “Multi-view Stereo” and/or “Photometric Stereo” will be drawn on. These technologies will be specifically attuned to complex object properties in the industrial field. The quality resulting from these scanning methods can be improved with the help of further sensor information from depth cameras, stereo cameras or inertial sensors as well as optimized user guidance.
The digital representation of geometry and an object’s properties are then turned into a real object. Primarily additive production procedures will be used to the end within the frame of M3D. The work package “Data modelling for the additive production” (WP5) focuses on the preparation of data for 3D printing. Geometry data needs to be adapted to the properties of the production chain. This is due to the inner structure of objects which significantly influences physical properties. Simulating them results in information on the suitability of each object for its specific purpose.
The project M3D runs from January 2016 until June 2018. It is funded by the German Federal Ministry for Economic Affairs and Energy (Bundesministerium für Wirtschaft und Energie, BMWi).