hugin-devs team mailing list archive

[Seth Berrier <seth.berrier@xxxxxxxxx>]

One last thing to add (sorry to be spamming so many updates here).  I
tried running enblend without the '-w' option.  This did not help.  So
even when blending along the horizontal wrap is disabled the white
pixels still appear.  The other wrap modes would not be useful or
correct in my case ('vertical' or 'both') so I did not try those but I
can if you think it would help!

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https://bugs.launchpad.net/bugs/1356551

Title:
  White pixels at 180 wrap and zenith for 16/32bit HDR Pano

Status in Enblend:
  New
Status in Hugin - Panorama Tools GUI:
  New

Bug description:
  When stitching my final pano for an HDR workflow I get a column of
  blank/white pixels near the equator at the 180 wrap and an entire row
  of blank/white pixels at the top.  Here's the basic pieces of my
  workflow:

  - Multiple exposures at 7 angles with samyang 8mm + pano head
  - Combined exposures to 7 HDR images using pfstools (sometimes exr files for 16bpp, other times tiff for 32bpp)
  - Use hugin to: mask out pano head arm, find control points, optimize positions, barrel and view and set output options
  - Stitch with a script using nona+enblend to equirec HDR image

  Can view example of the white pixels here:
  - you're facing the 180 wrap when it first comes up
  - zoom in at zenith to see the missing top pixel
  http://vr.rollerblading.es/pano/file?path=https://dl.dropboxusercontent.com/u/3340541/Panos/MuralLobby-Pano-LDR.jpg

  When I look at intermediate files I'm pretty sure it is enblend that is the source of the problem.  I've tried several different versions:
  - The stock version from the OSX binary on the source forge web site (v 4.1.1)
  - Enblend 4.1.2_2 compiled with macports
  - Enblend 4.1.3 compiled with macports (using my own updated portfile to grab the 4.1.3 tar ball)

  All three versions show the same problem.  I'll attach a screenshot
  pointing out the truant pixels as well as a minimal .pto file and the
  script I use for stitching.

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