A new imaging technique is helping archaeologists to find, interpret and conserve rock carvings in digital format
The technology that archaeologists and ICT researchers have recently adopted is called “structured light”. It is a method that quickly and easily reads off the three-dimensional shape of an object with the aid of a camera and a video projector. The images are transferred to a computer, which constructs a detailed three-dimensional model of the object. The method is normally used in reverse engineering, the process of making a 3D computer model of an existing physical object. It has also been used for product quality control, for example in the engineering industry.
I made an offhand comment on this the other day (can't find where tho), about using laser imaging with fine resolution to perhaps image very low relief etchings that are difficult to see with the naked eye, mostly for extremely worn monuments. This seems to be something that just might do the trick.