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A multinational company operating in the advanced cosmetics industry turned to Eoptis for an innovative 3D scanning solution capable of generating reliable, high-definition reconstructions of external areas of the body. The ultimate goal was to obtain a digital twin, namely, a digital replica of the physical body, in this specific case as a tool to support client communication. The solution developed by Eoptis consists of a group of cameras and a software component, that work together to generate a mesh, that is, a model that provides an accurate 3D representation of the surface of the human body.
The hardware consists of an array of cameras designed to blend seamlessly into the client’s operating environment. The cameras are moved around the area of interest, filming it from multiple angles.
The 3D model is generated using advanced photogrammetry algorithms, which eliminate the need for laser sources and ensure user safety. The software, developed by Eoptis, processes the collected images to deliver a highly accurate and realistic 3D surface model, complete with texture — that is, the photorealistic details of the structures as well as the skin’s texture and tone.
The first challenge was the colorimetric accuracy of the reconstruction: each person has a specific skin tone, so Eoptis (which also manufactures colorimeters) carried out a colorimetric calibration of the cameras, with much greater accuracy with a level of accuracy far beyond that of a standard camera. This led to a faithful color reconstruction of the skin of the scanned body parts, with the awareness that every detail matters.
The dimensional accuracy of the mesh is an even more critical aspect. For this reason, Eoptis has performed a metrological calibration of the system enabling reconstructions with sub-millimetric accuracy. This level of accuracy is the outcome of a procedure developed in-house, tailored to the complexities of the client’s operating environment.
Finally, the computational challenge. As is well known, photogrammetry algorithms are based on the collection of a large number of images. Processing these images is time-consuming and can take tens of minutes to generate the 3D model. Eoptis has adapted photogrammetry algorithms to the specific characteristics of the application to deliver high-quality meshes in terms of aesthetics, color accuracy, and dimensional precision, while significantly reducing processing times compared to standard approaches.
To develop this solution, Eoptis leveraged its interdisciplinary expertise — ranging from optics and mechanics to electronics, with software playing a crucial role — and applied advanced colorimetric and metrological calibration techniques.
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