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[Bug 721136] Re: enblend creates an unexplainable black area.

 

The bug was what we had discussed on the hugin mailing list four years
ago: https://groups.google.com/g/hugin-ptx/c/IgglWhsUCEQ/m/6bUu_YQpCAAJ
tldr: one may generate a seam line such that pixels are included from an
image that are out of bounds wrt that image.

This fix only affects the blending stage.  The seam generation and
optimisation are off in more subtly ways, and harder to fix.

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https://bugs.launchpad.net/bugs/721136

Title:
  enblend creates an unexplainable black area.

Status in Enblend:
  Fix Committed

Bug description:
  enblending       http://prive.bitwizard.nl/t80001.tif
  and                  http://prive.bitwizard.nl/t80003.tif
  results in          http://prive.bitwizard.nl/t8a.tif

  I cannot say I expected that black triangle in the output. My enblend
  was pulled from hg this morning (no changes) and built without
  imagecache or openMP. (imagecache causes corruption of the output
  similar but different to this. )

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References