Hello,

The following text has a positive slant - but Hugin does deserve
this...

== Hugin 0.8.0 is out ==

The panoramic stitching software Hugin 0.8.0 version has been
released, and once again creating panoramic images has become
smoother. Being  a faithful user since years, convinced by the virtues
and merits of this programme suite - and one should know about the
Panotools and Enblend engines under the hood as well - I am happy to
see the improvements from the last months put together into the
current release.

Sometime in 2005 my new camera came with a piece of stitching
software, and although I shall not mention any names, that piece was
crap. Really. So I was looking around, and rather sooner than later
came across what was then Hugin 0.5beta. It was already doing a
reasonable job then. One can learn quite a lot how software and
commerce do work, quite often not to the benefit of the user, but
instructive as this may be, let's leave these aspects alone for now
and look at much more pleasant things, Hugin's achievements that is.

Remember the days when you could still see the seam lines in a
panoramic image? Even Hugin's output did show such seams, although not
as badly as others, and at least the alignment was about right. But
already then there was this extra piece of software called Enblend
which could do away with seam lines most of the time. And with the
quailty bar rising, I discovered that panoramic images did benefit if
one corrected the vignetting before feeding images into Hugin,
although these external programmes could cause banding in the image in
exchange for removing the vignetting.

Then came the introduction of vignetting correction within Hugin.
First it was a simple add-on window, and one had to provide either the
parameters or a flatfield by oneself. But no longer had one to pre-
process the images, so on top of the original images the pto file was
all that was needed to revisit a stitch if one wished to do so at a
later time. And the next step was that Hugin was empowered to compute
the vignetting correction out of the image material itself. It already
did so for the lense parameters, and this self-contained parameter
determination is pretty damn useful.

Enblend was there as well. It has picked up processing speed since
then, beyond the CPU speeds getting faster. And it has become smarter.
There always is a seam line between images, although with Enblend you
usually do not see it. In the few cases where one did, one could
resort to editing the alpha channels of the intermediate image files.
Still manual intervention. But then Enblend got that extra bit smarter
with the capability not to determine the seam from geometry only, but
to look at the image content to find a good placement, a seam line
across areas where the images to be stitched differ as little as
possible.

A fair number of technical improvements has happened as well. Remember
the times when the output was TIFF, large TIFF files into and out of
Enblend? Some changes had to wait for their time, for instance the LZW
algorithm lost its shackles when finally the patent expired, and one
could think about using compressed TIFFs without perils. There are now
compressed cropped TIFFs saving on memory and hard drive space, and
JPEG is now possible as well hence one saves evoking a converter
program after the Hugin run.

Improvements on the GUI side? Yes indeed! Most recently the
introduction of a fast interactive preview. And fast really means in
real time. Even better, this new preview has some added features, and
personally I do like the cropping tool which allows me to select the
rectangular frame I want to have for the output JPEG image. It means
Hugin is a one stop shop for panoramic image creation in most cases.

Of course there are still some small quirks. I am confident the
thriving Hugin community will iron them out in due course. And surely
there are features I have not mentioned. Enfuse opening the door into
HDR, perspective correction of single photos, proper interpolating
algorithms, a wide choice of output perspectives to choose from, and
more. And certainly there are several aspects which deserve my
constructive criticism, and I plan to write these down in due course.
But I have left the most important thing for last, and that is:

Hugin is free. It is not a piece that sellers try to strip of features
and then endeavour to sell to you at a premium. Being free software
means that most probably Hugin is here to stay. You may even compile
and modify your own copy if you deam it necessary. And the aspect I
want to look at last: I have Hugin 0.8.0 (well, the release candidate)
running on both Windows XP and Mac OSX Tiger, with Hugin looking
pretty much the same on these different platforms, and I am looking
forward to seeing  the 0.7.0 to 0.8.0 upgrade on my debian Linux box.
But whatever the platform, Hugin is there.

2009-07-20   Klaus Föhl

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