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[tmodes <1778802@xxxxxxxxxxxxxxxxxx>]

** Patch added: "New initialization of members of SrcPanoImage class"
   https://bugs.launchpad.net/hugin/+bug/1778802/+attachment/5157128/+files/SrcPanoImage_init.patch

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https://bugs.launchpad.net/bugs/1778802

Title:
  PATCH: speed improvements

Status in Hugin:
  New

Bug description:
  I tried to profile hugin on a large project with 500 images and 100000
  control points. I identified and fixed some bottlenecks:

  ImageVariable.patch - reimplemented ImageVariable with shared_ptr -
  reduces complexity from O(n) to O(1)

  ImageVariableGroup.patch - move some method calls out of a loop

  GreatCircles.patch - reduce number of segments for short lines

  GreatCircles-image.patch - HuginBase::SrcPanoImage is expensive,
  initialize equirectangularImage only once

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