3 ms·
gives an 'up to scale' model, This is not a term that makes sense. It makes a model, there is no sense in having it scaled in any way except for being correct.
by CyberDildonics 3y ago
gives an 'up to scale' model,
This is not a term that makes sense. It makes a model, there is no sense in having it scaled in any way except for being correct. Saying 'up to scale' is like saying 'feet running' or 'mouth eating' or 'face talking'.
the scale is arbitrary
Only if you don't measure anything. If you have the camera correct and know how high something is or just know some depth or distances photogrametry makes an accurate model. 'Scale model' is a term from when scaling the model down made it easier to make. In the computer, it just means it isn't accurate.
- robotresearcher 3y agoIt's actually the technical term that is used in this context. It's used when you don't know the scale. You can estimate all the geometry 'up to' but not including a scale term. > and know how high something is or just know some depth or distances There you go: you just added in some extra information to constrain the scale estimate as I described.
- robotresearcher 3y agoIn the cow vs. toy cow example, you get a 3D model of a cow, but you don't know its absolute size. If you ALSO know that the cow is 2m long, or 3m away, you can infer the scaling factor for the geometry you estimated using pixels and camera intrinsics.