Bruno

OK, now I see the (multirow/stacked) CP option.

I tried it out on an 8-shot fisheye spherical pano. It ran pretty slow
(mainly because of the poor k-d tree implementation in autopano),
could not place the zenith and nadir shots, and aligned the others
badly, but with the right arrangement.

The default alignment using APSCpp  was a little faster and produced a
fully connected but even worse aligned pano.

PTGui generated a perfectly aligned pano in about 1/5 the time of
either Hugin method.

So we still have a way to go.

Perhaps it is not fair to test a 'multirow' algorithm on an image set
with one 'row' and two 'caps'.  But a practical 'grid' method ought to
handle spherical arrangements as well.

Cheers, Tom





Is this implemented within hugin or as an external command or script?

Regards, Tom


On Jun 10, 5:58 pm, Bruno Postle <[email protected]> wrote:
> On Thu 10-Jun-2010 at 13:35 -0700, Tom Sharpless wrote:
>
>
>
> >This 'multirow' option sounds like a big step in the right direction.
> >But perhaps it needs better publicity.
>
> It needs testing and the wiki needs to be updated too.
>
> >I'm looking at a pretty recent Hugin build ( 2010.1.0.5063 ) and can't
> >see anything that looks like a "multirow panorama option". Should I?
>
> In Preferences -> Control Point Detectors there should be an
> 'Autopano-SIFT-C (multirow/stacked)' option, if not then you might
> have to 'Load Defaults'.
>
> This is pre-configured to use generatekeys/autopano as a two-step
> detector, and align_image_stack for stacks.  You can change it to
> autopano-sift-c or panomatic as a one-step detector, but this is
> less efficient since features will be classified multiple times.
>
> You should also be able to change it use a different two-step
> detector such as Pablo's libpanomatic (untested).
>
> How it works is by using various strategies to match just the
> subsets of the photos that are extremely likely to overlap, then
> merging the resulting projects.  It doesn't require any user input,
> you get very few 'bad' connections, it scales to any size of
> project, and it supports real-world shooting situations:
>
> - Zig-zagging rows (left-to-right, then right-to-left, etc...).
> - Rows with different numbers of photos in each.
> - Odd row ordering (middle-row, top-row, then bottom-row etc...).
>
> The 'prealigned panorama' option is related, but available as a
> separate type of control-point generator.
>
> --
> Bruno

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