The evolution of technical documentation in the age of Industry 4.0 is going towards the use
of visual manuals, in particular exploiting Augmented Reality (AR) technology. Traditional
manuals are rich of text instructions that in AR applications are not advisable. In fact text
occludes the real scene behind and it is an issue for the translation. For this reason, we
propose to create and adopt a controlled and exhaustive vocabulary of graphical symbols, to
be used in AR to represent maintenance instructions. In particular, in this work we identified …