On 24 Mrz., 01:10, Calvin McDonald <[email protected]> wrote: > I didn't quite follow what the process is to get a lens profile if I > generate it with Hugin. This also makes me a bit nervous because I assume > the Hugin-generated lens profile numbers are not perfect and are likely > coming from a stitch that's not perfect. Doesn't this spread the > imperfection to the next pano that uses the lens profile?
It's really quite simple to find the values yourself. try this: go to file-preferences-control point detectors pick autopano-sift-c to the parameters there, add --maxdim xxxx where xxxx is your largest image dimension this setting of autopano-sift-c will give you (literally) hundreds of control points per image pair. detect control points with this setting on a set of well-overlapping (50% is good) images, (best to have the full 360 covered if you want a good v value) optimize for 'everything but translation' save the resulting lens parameters in a lens ini file since your lens isn't fixed to the body, d and e should be optimized afresh every time, the other values should not vary too much - they'll constitute a good starting point to load initially, but if you have plenty of CPs, you can reoptimize 'everything but translation' every time. For day-to-day work, you can throw out the --maxdim xxxx again, or make a separate entry for it which you use when you have an image set that's good for calibrating. Also, in everyday work, 30% overlap is considered ample. There is no such thing as perfection, but you can end up with a good standard if you repeat the process and average the values. You'll see if they vary much. Keep in mind that lenses vary and bodys vary. I'd say that someone else's values (even if they have the 'same' body and lens) aren't much better than an informed guess. You're much better off working it out for your individual lens/body combination. Kay -- You received this message because you are subscribed to the Google Groups "Hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx
