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   https://bugs.launchpad.net/bugs/779563/+attachment/2119947/+files/images.tar.bz2

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https://bugs.launchpad.net/bugs/779563

Title:
  enfuse sees a "grayscale" image where there is not

Status in Enblend:
  New

Bug description:
  I am processing three exposures of a large panorama.  This is in the
  area where the scene is brightest and so the highest exposure is
  completely white.  When blindly fusing each stack, the stacks with the
  white images return the error message:

  $ enfuse --contrast-weight=1 --output=_MG_7849_hq-_MG_7851_hq.jpg _MG_7849_hq.JPG _MG_7850_hq.JPG _MG_7851_hq.JPG
  enfuse: info: input image "_MG_7849_hq.JPG" does not have an alpha channel;
  enfuse: info: assuming all pixels should contribute to the final image
  enfuse: info: input image "_MG_7850_hq.JPG" does not have an alpha channel;
  enfuse: info: assuming all pixels should contribute to the final image
  enfuse: info: input image "_MG_7851_hq.JPG" does not have an alpha channel;
  enfuse: info: assuming all pixels should contribute to the final image
  enfuse: input image "_MG_7851_hq.JPG" is grayscale
  enfuse:   but previous images are color

  expected behavior: fuse the images (and let the weightings take care
  of the over exposure)