Ok. It's fine if it doesn't get that precise. I can work with around 1 degree if the software doesn't allow for less.
The point is that having a scaling feature would allow me to fine-tune the scale based on what I know. Since I superimpose my panorama to imported terrain and map data in Blender, I can see when a building or hill should be slightly more to the left or right on the photo, then adjust the FOV in Blender using the slider I made, and I know this FOV to be correct. I just don't know an easy enough way to give this back to Hugin so it exports a corrected version. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Monday, March 30, 2020 10:35 AM, Klaus Foehl <[email protected]> wrote: > As you are talking sub-degree precision, there is an inherent limitation > in the hugin lens model or abc parametrisation. From the Brown-Conradi > model, a mathematically sound distortion description, hugin implements > only one of the non-trivial parameters, which is parameter b. > > Parameters a and c are not in Brown-Conrady, for polar coordinates they > are mathematically not sound, and in practice their use does not lead to > the quantitative alignment improvement an extra good parameter would > provide. > > To add to it, I have seen situations where the use of a and c parameters > have made things observably bad. If parameters b and the offset > parameters d and e provide you with enough precision, then fine, then > hugin is a really good tool for you. > > On 30.03.20 09:37, 'ChameleonScales' via hugin and other free panoramic > software wrote: > > > Unless I'm missing some geometrical effect, it doesn't seem to me that you > > would have to re-optimize it given that the transformation should precisely > > preserve the panorama's sewing just like in the animation above, so as I > > understand it, control point distances should only change proportionally to > > the scale you apply. But correct me if I'm wrong. > > As for getting it right in the first place, in my use case, I have to > > superimpose a panorama to its virtual 3D environment in Blender and I need > > sub-degree precision on the HFOV. > > I don't think any software could make such a precise guess with the photos > > I get from my clients. > > -- > > A list of frequently asked questions is available at: > http://wiki.panotools.org/Hugin_FAQ > > ------------------------------------------------------------------------------------------ > > You received this message because you are subscribed to the Google Groups > "hugin and other free panoramic software" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/hugin-ptx/282135e3-7846-f179-5382-410c95b68c4e%40gmail.com. -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/VE_6_vDJMtyLJq74rQF8ZK7erhCrRRBeUVumngyC5JGiAo69BAj-_aiGTB5XNuZYLHSLrqtXx3edsVgLAWYdMdATLwaWzxorAwP-GvEGtTg%3D%40protonmail.com.
