Edit: Sorry, I read your reply below and obviously I'm not telling you anything you don't know. Maybe someone else finds it helpful. My original reply: "Photog

Edit: Sorry, I read your reply below and obviously I'm not telling you anything you don't know. Maybe someone else finds it helpful. My original reply: "Photogrammetry" in this context, assuming the article is using the term correctly, should mean that the models are a computer reconstruction of the 3d shape based on a dataset of a large number of photos. Depending on the coverage and quality of the photos taken, some cleanup would be necessry, and potentially a human might have made up particular details after the fact if some portions of the ship were not visible in the photos taken, probably due to occlusions etc. The article seem to say this was a side product of a geological survey mission, so my guess based on that and personal experience with photogrammetry techniques is the geometry of the model is feature accurate, although some noise may have been introduced. The lighting is likely to be artificial.