It is common knowledge that the Pompeii we recognise today endured a catastrophic volcanic eruption in the 1st century AD, yet that wasn't the only disaster to strike the Roman city. In 1943, after archaeologists had painstakingly salvaged much of its heritage from the volcanic ash, a fresh wave of destruction fell from the skies—this time in the form of Allied bombs during the Second World War.

The strikes shattered numerous frescoes that had survived for millennia into thousands of tiny shards. It created a jigsaw puzzle that was virtually impossible to solve until technology recently stepped in to rescue the art. A groundbreaking AI-powered robotic system is proving to be a game-changer. Named RePAIR, it's helping to piece together paintings once considered lost forever. In this article, we explore this project alongside other innovations, such as 3D printing, which are helping us preserve and enjoy the artistry of our ancestors.

The EU’s RePAIR project (short for Reconstruction of the Past: Artificial Intelligence and Robotics) is a development from the University of Bonn. It combines collaborative robotics with computer vision to assemble thousands of fragments from Pompeian frescoes and, eventually, all manner of archaeological remains including ceramics and mosaics. Utilising robotic arms fitted with high-sensitivity tactile sensors, the machine handles these ancient relics with surgical precision, scanning them in 3D to pinpoint their original position.

However, the real breakthrough is not just mechanical; it is in the data processing. The system employs deep learning algorithms to analyse the morphology of each fragment, identifying colour patterns, brushstrokes, and microscopic textures. Unlike traditional methods, which would take decades of manual labour and carry a high margin of error, this AI performs millions of spatial comparisons in record time. The robot acts as a tireless conservator, proposing logical solutions to the puzzle so that scenes lost to the bombings can be reintegrated with mathematical accuracy.

This technological leap opens new doors for heritage conservation. By automating the most tedious and mechanical phase of reconstruction, experts are free to focus on the historical interpretation and artistic analysis of the finds. Yet, this is not the only way technology is reviving and protecting our cultural past.

Subsequently, a D-Shape technology printer generated a concrete replica, which was then textured for a final finish. The capitals—the most intricate elements—were created independently using high-resolution 3D printing techniques. The result is a structure faithful to the 12th-century original that museum visitors can see and touch without any risk of causing damage.

Physical objects aren't the only way to make unique pieces accessible to the public. One technique gaining momentum is digitisation via laser scanning or high-resolution structured light. While often a precursor to 3D printing, it also allows for the creation of online galleries where items can be viewed in minute detail.

This is the approach taken by initiatives like the memoriademadrid Digital Library, which hosts everything from Bronze Age vessels to 19th-century sculptures, all available as 3D models. If you'd like to learn more about ACCIONA’s innovative projects beyond the MAN, including the work of its ACCIONA Cultura division, we recommend this in-depth feature article. There, you can discover how they've digitised and 3D-printed figures for the Grand Egyptian Museum to provide a tactile experience for visually impaired visitors.

Source:

• RePAIR project