Benjamin Hill | 20 Dec 22:11 2014
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Reverse panoramic - emulating a fancy motorized star-tracking camera rig

It feels like this should be possible, but I don't know if the math actually works out! 
Anyone interested in collaborating?
  1. Take a lot of photos of the night sky with a fish eye camera.  (Don't feel bad if they are a noisy mess because your old GoPro has horrible low-light sensitivity.)
  2. Track the brightest 10 stars using some very naive code (that I wrote) which dumps out 100k worth of alignment points in PTO format
  3. Run autooptimiser on it and go get a coffee.
  4. Run nona on the pano (more coffee)
  5. Now you have a stack of 100 photos, all perfectly (?) rotated and un-distorted that you can sum or do a median filter on, and 
  6. Get a single beautiful picture of the night sky rivaling those people with a huge lens and a motorized camera mount.
I got public code that works, and I think it does better than any other method I've seen - and doesn't require perfect knowledge of your camera's fisheye distortion.  Anyone want to collaborate and help make it less naive?
 

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Kyle Johnson | 19 Dec 20:07 2014

[hugin-ptx] 360° Panorama Stitching - Output Consistently Warped/Distorted

Hello,

I am attempting to stitch 360° panoramas shot with an 8mm lens on a crop sensor camera in portrait orientation. The images eventually fed to the stitching workflow are four TIFF files, each rotated 90° around the nodal point.

Our old workflow involves the use of PTGui, which produces a perfect result with little configuration. However, I'd like to get this working under command line tools such as cpfind, nona, etc.

The issue is that all images are warped, as though the camera is sitting atop a hill. See the image below for an example of this (viewed using krpano), with a straight red line added for reference. The camera remained perfectly stationary and the nodal point was properly set in this panorama.

The same type of curvature is visible when facing the opposite direction (180° rotated), and 90° left and right is like looking downhill.

The Hugin GUI produces a far more curved result with the default configuration. When stitched using a variety of other tools, the panorama has always come out flawlessly, thus I do not believe it is an issue with our technique or image content.

Here is the basic script we use to build these panoramas.

pto_gen --projection=2 --output=project.pto *.tif
pto_var --set "v=112.5" --output=project.pto project.pto
pto_var --opt "v,d,e,g,t,EeV,Er,Eb,Vb,Vc,Vd,Vx,Vy,Ra,Rb,Rc,Rd,Re,y,p,r,TrX,TrY,TrZ" --output=project.pto project.pto
cpfind -o project.pto project.pto
cpclean -o project.pto project.pto
linefind --output=project.pto project.pto
autooptimiser -a -l -m -s -o project.pto project.pto
pano_modify -s -c -o project.pto project.pto
nona -o working_ project.pto
enblend --output="completed.tif" working_*
convert completed.tif -quality 100 #{name}.jpg
I have tried several variations on cpfind options, such as --fullscale and sieve1/sieve2 settings, as well as changes to optimizer settings, but none significantly impact this curvature issue, and many of those introduce other problems.

In general, what should I do to improve the output? Am I doing something wrong?

If more information is needed, I can provide it.

Thanks.
--Kyle

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Yili Zhao | 18 Dec 11:37 2014
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How to use multiblend "--save-seams" option?

Hi,
  I have two aligned image in tiff format, and I can blend them with multiblend by using this command:

  multiblend_x64 -o pano.jpg sample1/layer0000.tif sample1/layer0001.tif

  Next I want to save seam file with this command:

  multiblend_x64 -o pano.jpg --save-seams seam.png sample1/layer0000.tif sample1/layer0001.tif

  But the command failed with the error message:
  opening images...
  TIFFOpen: --save-seams: Cannot open.
  couldn't open file!

  I also tried some other combinations, but can't save the seam file either.

  May you give me some suggestions?

  Thanks!

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Scott Bronson | 18 Dec 09:01 2014

enblend: error building color transform

Hi, I'm trying to use Hugin to stich an electronic schematic together.  When I stitch, I get:

~/schemstitch$ /Applications/Hugin/PTBatcherGUI.app/Contents/MacOS/enblend -f10116x6588+222+0 -o scanaa.png -- scanaa0000.tif scanaa0001.tif scanaa0002.tif
enblend: error building color transform from " Generic Gray Profile" to XYZ space

 And nothing gets generated.  The .tif files look fine to me.  Can anyone tell me how to fix this?

I'm using 2014.0.0 on a Mac.

Here's my project: https://www.dropbox.com/sh/62tbny2kp7l14sc/AADV8CIIDfhzsou_P6sL37zJa?dl=0

And I'm trying to follow this guide: http://hugin.sourceforge.net/tutorials/scans/en.shtml

Thanks for any advice!

    - Scott

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Mike Mackinven | 14 Dec 22:52 2014
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[hugin-ptx] Hugin – fast preview not working?

Hey guys,

This morning I opened up Hugin to make a panorama, and a popup came up (my mistake, didn't read it properly) and mentioned something about the Fast Preview Window (GL), so I clicked OK. Now the GL button is greyed out and will not work whats ever. 

I am stuck now as I use that window to edit my panorama before stitching! <at> #$ How can I get this preview back?? I have deleted Hugin off my Mac and reinstalled it, same problem :(

Cheers!

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White Mouse | 13 Dec 19:05 2014
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Hugin - Interrupt/Exception caught


Install the new version of the program: Hugin_2013.0.0_64bit_Windows  --> Hugin_2014.0.0-rc1_64bit_Windows
Once had a problem with any initial data. Could not find the location and cause of the problem.
Has anyone encountered a similar problem? Any recommendations? Solutions?

Thank you all in advance for your help!
Sergey.

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Attachment (IMG_1614 - IMG_1645.pto): application/octet-stream, 30 KiB
Attachment (error.log): application/octet-stream, 8 KiB
Terry Duell | 12 Dec 03:19 2014
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Hugin-2014.0.0.dmg on sourceforge - what version of OS X?

Hello All,
We have Hugin-2014.0.0.dmg (79.8 MB) available at  
<http://sourceforge.net/projects/hugin/files/hugin/hugin-2014.0/>.
Can anyone tell me what version of OS X this is for...or doesn't it matter?

Cheers,
-- 
Regards,
Terry Duell

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louanddougs | 9 Dec 11:04 2014

pixel artefacts in fused image stacks and panoramas

Hi,

 

I have been using the 2014 release of Hugin for a while, and have noticed some artefacts appearing in shadows of exposure-fused images.  I have searched high and low and have found only one similar post (from 2011), but have not found any fixes for this issue, or any current discussions of this topic.


https://bugs.launchpad.net/enblend/+bug/787387

 

I noticed this first when attempting some pseudo-HDR merges from single RAW files (3 to 5 images with different exposure compensation, converted to 16 bit tiffs in Capture NX). Brightly coloured pixels (mainly shades of green, magenta, cyan and blue, sometimes white) would be lurking in shadowy areas of the stacked or stitched final images. These are generally worse when using "exclude masks", but can also appear in images where no masks were used.

 

These brightly coloured "random" pixels appear in dark areas of the fused image stacks and also stitched panoramas. They have appeared in many different projects.  I have just checked some panoramas made earlier this year, which must have been made with the older (2013?)  Hugin version, and there are no artefacts in those images.

 

You need to be zoomed in 100% plus to see them. These pixels can be selected and replaced (i.e., with black) in an image editing software, but because they are not exactly the same colours it takes a long time to manually select all the erroneous pixels - even with a moderate tolerance threshold set – so not an ideal solution.

 

Just wondering if anyone else has noticed this and is there is any way around this issue?

 

Dougal.

 

Mac OSX 10.9.4

3.1 GHz Intel Core i7

8 GB 1600 MHz DDR3

NVIDIA GeForce GT 750M 1024 MB

 

Hugin 2014.0.0-beta1

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El Afrit Mariem | 9 Dec 09:44 2014
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Change the number of lens automatically

Hi everybody,

Does anyone knows how to change the number of lens automatically?
Actually, I have about 100 picture and I can't do it manually!

Thank you.

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Tim McCormack | 7 Dec 19:28 2014
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Projecting images without fusing? (For manual fusing.)

I have a series of photos <http://imgur.com/a/gNtXu> of a sticker with chainlink in front of it. I'd like to get rid of the chainlink. The current approach I'm thinking of is to use hugin to align the images with each other *without* blending them into a panorama so that I can manually stitch them. However, I can't seem to figure out which set of options I need to use in order to achieve this. Any suggestions?

- I'm using version 2011.4.0.cf9be9344356
- Exposure correction doesn't matter to me either direction.

Thanks!

 - Tim McCormack

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Qji | 5 Dec 18:00 2014
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deb packages


Hi guys,

I'm an Ubuntu user and I wanted to use the latest (2014.0) Hugin, but I prefer to use deb packages. As I see you have a PPA on launchpad (https://launchpad.net/~hugin/+archive/ubuntu/hugin-builds), but it's outdated a bit. Anyway, I'm not sure if any of the maintainer of this PPA is here. Is the PPA an official channel? Is it planned to update? I'm pretty sure many Ubuntu user would be happy with that. :)

Thanks,
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Gmane