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[Yuv <792896@xxxxxxxxxxxxxxxxxx>]

Any Mac OS X user also affected?  bug 814301 reports that Hugin 2010.2.0
works well at detecting CPs while 2011.0.1 does not.

History of CP detectors:

2010.2.0: technically speaking, Hugin did not detect CP. A third party
tool did. Most user used Autopano-SIFT-C. Some users used a lesser known
and faster tool, Panomatic. Both tools are encumbered by patents, it is
the user's responsibility to make sure that they are allowed to use them
in their jurisdiction.

2010.4.0: first release of Hugin's own CP detector, cpfind.

2011.0.0: cpfind improved and AFAIK it is superior to any tool
previously used with Hugin.

And looking at it from a threading perspective:
* Autopano-SIFT-C does not use multi-threading
* Panomatic uses zthreads for multi-threading
* cpfind uses zthreads for multi-threading

could this be another manifestation of this pesky bug?  could it be a
bug in zthreads?

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https://bugs.launchpad.net/bugs/792896

Title:
  Fast Preview Hangs or Crashes since 2011.0

Status in Hugin - Panorama Tools GUI:
  Confirmed

Bug description:
  Upgraded from 2010.4 to 2011.0.0 and it has hung 3 times in about 15
  sessions.  All three hangs happened while doing the same thing.....
  new session, load images, load a lens profile, set the canvas size
  (Calculate optimal size), save-as and save profile then click on GL
  (fast preview) button.  Fast preview window comes up, shows anchor
  image and then hangs.

  Is not reproducible.  Running 2011.0.0.0fd3e119979c built by Matthew
  Petroff on 64-bit Win7.

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