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[tmodes <683448@xxxxxxxxxxxxxxxxxx>]

> To do this, Hugin would need:
>
> A nona option to automatically remove blown out areas 
> from input photos when remapping, 

Implemented in changeset f08e456e35d3. Call nona with option --clip-
exposure to mask all under and overexposed areas automatically.

> An additional output option that does exposure correction 
> like 'normal' output, but which uses enfuse to merge 
> stacks like the existing 'exposure fusion' output.

I decided against implementing a hard coded version for this case. Instead I added in changeset e742ac9250cd an "user-defined output" mode. This is more flexible and allows also to add other variants. The zero noise output is added as example.
Further modifications can now added more easily.


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

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https://bugs.launchpad.net/bugs/683448

Title:
  Hugin should support 'zeronoise' output

Status in Hugin:
  Fix Committed

Bug description:
  This is a feature that should be easy enough to add, we figured all
  this out a while back but I haven't got around to writing it up.

  'zeronoise' is a tool that combines bracketed exposures to produce
  output with reduced noise in dark areas, Hugin could do the same thing
  (but much better) as an alternative to the usual enfused output.  You
  can reproduce the technique like this:

  Shoot a bracketed stack (or more than one) with the shortest exposure
  the 'right' one, and with additional overexposed shots to capture dark
  areas.

  Remove any 'blown out' areas of the overexposed shots by setting 100%
  transparency to these areas, this is very important.

  Photometrically align them in Hugin and generate 'Normal' output with
  individual remapped images, i.e. you will end up with a series of
  photos that all have the same 'exposure', except they started as
  differently exposed photos.  Some shots will have more noise that
  others, and others will have transparent areas where there should be
  highlights.

  Now run them through enfuse.  It turns out that enfuse is _very_ good
  at picking the lowest noise data from each shot, you will end up with
  a photo that looks just like a normal photo except with hardly any
  noise.

  To do this, Hugin would need:

  A nona option to automatically remove blown out areas from input
  photos when remapping, actually I suspect this would be generally
  useful when using enfuse 'normally'.  Note that a 'blown out' area may
  only be saturated in a single channel.

  An additional output option that does exposure correction like
  'normal' output, but which uses enfuse to merge stacks like the
  existing 'exposure fusion' output.

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