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[tmodes <1659528@xxxxxxxxxxxxxxxxxx>]

The warning was not correctly displayed. This is now fixed in
repository.

** Changed in: hugin
       Status: Fix Released => Fix Committed

** Changed in: hugin
    Milestone: None => 2017.0beta1

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https://bugs.launchpad.net/bugs/1659528

Title:
  align_image_stack fails to process PNGs: Assertion failed

Status in Hugin:
  Fix Committed

Bug description:
  align_image_stack fails for certian PNG files that were created by
  ImageMagick convert from a CorelDRAW-created PDF file.

  Here's the commandline output:

  Unable to read EXIF data from opened file:C47C_ref.png
  Unable to read EXIF data from opened file:C47C_src.png
  Creating control points between C47C_ref.png and C47C_src.png
  align_image_stack: /build/hugin-xzKV1g/hugin-2015.0.0+dfsg/src/tools/align_image_stack.cpp:740: int main2(std::vector<std::__cxx11::basic_string<char> >, Parameters) [with PixelType = vigra::RGBValue<unsigned char>]: Assertion `nextImgInfo.size() == firstImgInfo.size()' failed.

  Sometimes it works, sometimes it doesn't. I tried converting the files
  back and forth to different formats to drop any strange data that
  could confuse align_image_stack, but it kept failing to process the
  files.

  Is this a bug?

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