3d Reconstruction-Reverse Engineering – Digital Fabrication of the Egyptian Palermo Stone Using by Smartphone and Light Structured Scanner

Abstract

This paper presents a pipeline that has been developed to acquire a shape with particular features both under the geometric and radiometric aspects. In fact, the challenge was to build a 3D model of the black Stone of Palermo, where the oldest Egyptian history was printed with the use of hieroglyphs. The dark colour of the material and the superficiality of the hieroglyphs' groove have made the acquisition process very complex to the point of having to experiment with a pipeline that allows the structured light scanner not to lose the homologous points in the 3D alignment phase. For the texture reconstruction we used a last generation smartphone.

Improved low-cost 3D reconstruction pipeline by merging data from different color and depth cameras

“…Di Paola and Inzerillo (2018), in order to digitally produce the Egyptian stone from Palermo, proposed a method with a structured light scanner, smartphones and SfM to apply texture in the highly accurate mesh generated by the scanner. The main challenges were the dark color of the material and the superficiality of the groove of the hieroglyphs that some capture approaches have difficulty recognizing.…”

Análisis de dos técnicas para la digitalización de colecciones históricas de modelos anatómicos

“…El menor coste económico de esta última técnica y los recientes avances en su precisión y velocidad han favorecido su popularización y hoy día es frecuentemente empleada en tareas de conservación y restauración del patrimonio cultural. Por otra parte, aunque la precisión de puntos y la resolución volumétrica logradas por los escáneres 3D suele ser superior a las obtenidas por fotogrametría, la extraordinaria calidad de la textura de color que poseen las cámaras digitales habitualmente empleadas para realizar los levantamientos fotogramétricos, hace que en ocasiones se prefiera la fotogrametría, si lo que se desea es mostrar una representación fiel del color, o que se empleen ambos métodos combinados (Di Paola y Inzerillo, 2018;Liu et al, 2012).…”