Sorry, this is not really 3d printing related. But as we have some cool folks here OS wise. I hopped you could help or point me the correct way.
As I have mentioned before my brother and I own a tiny narrow boat we are doing up.
The engine room is a nightmare. 4ft high with no top access. We are disabled (visual and flexibility basically old can't bend and classed as blind but some vision. ) So we have difficulty measuring exact space in a room we have to crawl through. Well it's very like Star Trek Jeffries tubes but greasy. ;)
We need to plan and mount electronics in there to support our use. (I sought advice on printing to help with this a while back and got fantastic help)
I am now starting to think having a 3d model of the engine room would make working out the layout much easier. So here is where advice is needed.
We are skint (poor for the US) so spending 1000s ain't an option. And likely not worth it anyway.
I have heard of android apps that use photographs. And that level of accuracy is likely fine for our planning needs.
But I'm a Linux 100% user. Since the late 90s So need some way to do this that can be done on Linux and fed into FreeCAD and or Blender.
Does anyone know much about tools in this space. And what the process for doing this with photographs is?
Do you have an iPhone or any phone with lidar built in? It's been a while but I recall it being an option for scanning, make use of tools you already have. I'm not sure what exists for Foss related apps though sorry, and afaik they're not super accurate (dedicated scanners can get <0.01mm resolution from what I've seen but they're expensive) but if your goal is layout that'd do the trick in my view. Heck, as you said, camera scanning would work, there'll be cleanup but should be good enough to get you dimensions.
Another thought, could check with local makerspaces or the like, totally possible they may have scanners you could use, or could put you on the right track. Diy wise, kinects as mentioned, I'm not experienced with these but there are photogrammetry tools, micmac could work, there's meshroom but that needs some compute hardware and COLMAP could also be worth looking into
Edit: Photogrammetry is decently accurate afaik, recall sitting in a tech meeting at my last job where the process engineers from the material handling department presented a poc they did with some cheap drones and cheap cameras, they did a fly over of the pier to scan ore piles and apparently were able to get fairly accurate weight estimates from the photogrammetry results, which was really cool to me.
Ibdont. My brother dose.
So im going to give meshroom a try with my android phone.
If that dont work ill get my brother to come up to the boat.