A medieval man "could" have built the same phonograph that Edison built in 1877.
And the 3-D characteristics of the Shroud are NOT apparent to the human observer. It is only when a computer is used in order to plot the brightness of each point on the image onto a graph, that the three-dimensional information in the image becomes apparent.
Making any fuss about this particula experiment makes no more sense than waving a piece of fabric about and declaring: "The Shroud is made of cloth, and here is a piece of cloth manufactured in the 18th century, therefore the Shroud could have been created in the 18th century!"
The most curious thing to me, though, and the thing that hasn't been explained by any of these people is the total absence of anything else even remotely similar to the shroud. If this is a medieval fake, there should be other, similar examples.
In reference to the technique suggested by the article, it's a joke. I can't believe that anyone would even have the courage to put it out as a suggestion. The 1300s were referred to as the "dark ages". The concept of perspective in illustration and painting did not exist. Leonardo da Vinci is generally credited with developing the science of perspective in painting. He was born in 1452, and didn't become well known until he was around thirty. The concept of a painter of the 1300's understanding three dimensional design well enough to paint it on a glass and then use photographic development techniques (although rudimentary), is ludicrous.