Re: [hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread Gunter Königsmann
Would that help with cellphone lenses that tend to have a different scale in the top left corner than in the lower right one? Torsten Bronger schrieb am Di., 24. Juli 2018, 07:36: > Hallöchen! > > klaus.fo...@gmail.com writes: > > > [...] > > > > In these old days I did detail that from the

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread Torsten Bronger
Hallöchen! klaus.fo...@gmail.com writes: > I found an old thread on the panotools wiki. > > https://wiki.panotools.org/User:Klaus/Improving_Hugin I find the language hard to understand, sorry. Anyway … what is the argument against even exponents? > As long as there is no hard vignetting in

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread klaus . foehl
Hallo Torsten, I found an old thread on the panotools wiki. https://wiki.panotools.org/User:Klaus/Improving_Hugin As long as there is no hard vignetting in the lens, the reasoning should work. Best regards Klaus -- A list of frequently asked questions is available at:

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread Erik Krause
Am 24.07.2018 um 21:01 schrieb klaus.fo...@gmail.com: I found an old thread on the panotools wiki. https://wiki.panotools.org/User:Klaus/Improving_Hugin There probably is one problem we didn't consider then: Higher order polynomials tend to overfit. That might be the reason why professor

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread Torsten Bronger
Hallöchen! Gunter Königsmann writes: > Would that help with cellphone lenses that tend to have a > different scale in the top left corner than in the lower right > one? No. It is all about centrosymmetric aberrations here. Tschö, Torsten. -- Torsten Bronger -- A list of frequently asked

[hugin-ptx] Re: Inconsistent results between TIFF and EXR output in image positioning

2018-07-24 Thread Matija Kogoj
I was under impression that it was better not to make new topics when a significantly similar thread was already open. Operating System: Windows 7 SP 1, 64-bit edition Architecture: 64 bit Free memory: 13771976 kiB Hugin Version: 2018.0.0.5abfb4de7961 built by Thomas Libraries wxWidgets:

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread Erik Krause
Am 23.07.2018 um 17:26 schrieb klaus.fo...@gmail.com: Non-zero parameters a and c introduce singularities at r=0, something a real lens does not have. Since the correction function itself doesn't have a singularity at r=0 and all that changes at r=0 is the slope of the curve there is a

Re: [hugin-ptx] hugin 2018.1.0.e7fabd53598b from nightly repo fails

2018-07-24 Thread Hans Bull
I could not agree more...Nightly did its job. Works again. Thank you very much! Cheers, HB Il giorno martedì 24 luglio 2018 18:47:43 UTC+2, T. Modes ha scritto: > > > > Am Dienstag, 24. Juli 2018 16:11:56 UTC+2 schrieb Stefan Peter: >> >> > hugin: >> > >>

[hugin-ptx] Re: incomplete lens correction model - it bites

2018-07-24 Thread klaus . foehl
Hi all, Thanks for the replies so far. I'll upload some photos in due course. But 1st I need to fetch suitable photographic material back at home, and 2nd I want to try to stitch a 360 deg panoramic as this better constrains the FOV fit parameter. As the JPGs have filtering artifacts, I'll

Re: [hugin-ptx] hugin 2018.1.0.e7fabd53598b from nightly repo fails

2018-07-24 Thread Stefan Peter
Dear Hans Bull On 23.07.2018 19:31, Hans Bull wrote: > on Ubuntu 16.04. Cannot add more than one image, either with drag and > drop or even with pto_gen, it quits with > > hugin: > /build/hugin-6ZZNNM/hugin-2018.1.0+hg7975+dfsg/src/hugin_base/panodata/ImageVariableGroup.cpp:111: > void >

Re: [hugin-ptx] hugin 2018.1.0.e7fabd53598b from nightly repo fails

2018-07-24 Thread Hans Bull
Dear Stefan Peter, I just tried with 2018.1.0.e7fabd53598b and removed .hugin config file, but the problem remains. Cheers, HB Il giorno martedì 24 luglio 2018 16:11:56 UTC+2, Stefan Peter ha scritto: > > Dear Hans Bull > > On 23.07.2018 19:31, Hans Bull wrote: > > on Ubuntu 16.04. Cannot

[hugin-ptx] Newbie question - Focal length

2018-07-24 Thread Daniel Md
I just started using Hugin, it works great. I usually take a set of photos for landscape panoramas with my Pentax K20 using an 18-50mm zoom, set to 18mm. When I load the resulting images into Hugin, the Focal length is usually reported as something else, e.g.20.402, although the Focal length

Re: [hugin-ptx] Newbie question - Focal length

2018-07-24 Thread bugbear
Daniel Md wrote: I just started using Hugin, it works great. I usually take a set of photos for landscape panoramas with my Pentax K20 using an 18-50mm zoom, set to 18mm. When I load the resulting images into Hugin, the Focal length is usually reported as something else, e.g.20.402, although

Re: [hugin-ptx] hugin 2018.1.0.e7fabd53598b from nightly repo fails

2018-07-24 Thread T. Modes
Am Dienstag, 24. Juli 2018 16:11:56 UTC+2 schrieb Stefan Peter: > > > hugin: > > > /build/hugin-6ZZNNM/hugin-2018.1.0+hg7975+dfsg/src/hugin_base/panodata/ImageVariableGroup.cpp:111: > > > > void > > >

[hugin-ptx] Re: Inconsistent results between TIFF and EXR output in image positioning

2018-07-24 Thread T. Modes
Am Dienstag, 24. Juli 2018 11:41:06 UTC+2 schrieb Matija Kogoj: > > I only used tools which come within hugin and as default, having made no > changes to settings. > The following images are about the worst I could find. There is one > situation where the lens shifted, but I reason this should

Re: [hugin-ptx] aligning star pics with hugin... recommended cpfind params?

2018-07-24 Thread T. Modes
Am Montag, 23. Juli 2018 22:31:25 UTC+2 schrieb clepsydrae: > > Maybe it is sufficient to connect all images sequentially and then run > align_image_stack only on the first and last image to connect them. >> >> (align_image_stack can only cope with a limited amount of movement. It >> this is