I see... Well if it's a "terrain map", then how do you explain the fact that your "terrain map" shows that the guy in the shroud image has what look like crab eyestalks prominently jutting out from his eyeballs where his pupils should be?
Hint: It's not actually a terrain map, but flat images recognizable as representations of 3D objects (like a human face, for example) will of necessity contain data that can give a reasonable facsimile of a 3D shape when processed appropriately. However, certain aspects of the flat image (like dark pupils in a light eyeball) will give spurious 3D "data" and break the illusion of an actual "terrain map".
We don't have to explain it because it doesn't have "crab eyestalks prominently jutting out". It is well known that the image on the shroud shows that something has been placed on the eyes, probably to keep the eyelids closed.
First Century Jewish burial practices included such an object... sometimes a potsherd, other times a small coin. Some Shroud researchers claim that under enhancement the object on the right eyelid is a Pontius Pilate Lituus Lepton, minted from AD 29 to AD 32. Others claim what is seen is on the same order as finding bunny rabbits in clouds because of the low resolution and the high noise factor from the weave of the linen.
After publication of the enhanced photographs showing the purported coin's inscription, it was noted that there appeared to be a misspelling in the Latin inscription (CAI instead of the expected UKAI)... this was immediately jumped on as proof of an error by the medieval forger by shroud debunkers. However, AFTER the publication of the photos with the misspelling, six Pontius Pilate Leptons of known provenance have been unearthed with the exact same misspelling.
My position is that I have seen the coin on some enhanced photographs... and not seen it on others. It may be an artifact of the enhancement, although the circumstantial evidence of the identification of a misspelled word that is later shown to be accurate to a very rare version of the coin might lead some credibility to the claim.
Some recent enhancement workers have proposed that the less clear object on the left eyelid is a Julia Lepton, minted only in AD 29 to honor Tiberius Ceasar's wife Juia. They claim 73 points of congruence.