Map Difficulties 2

[paul womack]

I'm attempting to de-tessalate another map.

http://london1872.com/stanford01.htm

Specific difficulties arise from the fact that (in this case)
the tiles have zero overlap, so all control points have to be manual.

But I remain convinced that Hugin is probably a good tool
for the job, at least in principal.

I have not been getting good results from mosaic mode (X,Y,Z optimisation)
so am working in "normal" mode, with an artificially small FOV.

So far, so good.

On this particular map, some of the tiles have borders,
which I am attempting to remove using Hugin's
crop/mask features.

This is not working "as well as I would like".

I am using:

Ubuntu 12.10
hugin-->2013.0.0+dfsg-1ubuntu1~quantal
enblend-->4.0+dfsg-4ubuntu3
libpano13-bin-->2.9.18+dfsg-4ubuntu1

Specifically:
Include masks don't seem to work correctly. I have a VERY simply, more or less rectangular
include mask on my first image (it's not quite perpendicular, so I'm not using a
crop).

The masked image (I selected remapped images in the Stitch tab),
is ... just wrong (pto and image attached).

What's worse, I think these shapes may be causing trouble to enblend,
since I'm getting very funny results. (low res screen shot attached, note bottom right!!)

Any comments or recommendations welcomed.

BugBear

[paul womack]

paul womack wrote:
> On this particular map, some of the tiles have borders,
> which I am attempting to remove using Hugin's
> crop/mask features.
>
> This is not working "as well as I would like".

Final GUI whinge. The shortcuts for the various scaled
views that apply to the control points dialogue don't work
in the mask dialogue.

</whinge>

BugBear

[Bruno Postle]

On 28 April 2014 10:24, paul womack wrote:

> On this particular map, some of the tiles have borders,
> which I am attempting to remove using Hugin's
> crop/mask features.

Yes, masking in Hugin isn't very useful where there are tiny overlaps.
Enblend also probably isn't appropriate for this sort of thing, you
might do better with and image editor: masking with the eraser tool
and flattening layers.

--
Bruno

[paul womack]

Yes - the mask faults remain, but doing:

nona -m TIFF_multilayer -o multi_layer stan.pto

and simply flattening the tiff in GIMP gives me a good result.

BugBear

[T. Modes]

Am Montag, 28. April 2014 12:23:49 UTC+2 schrieb bugbear:

Yes - the mask faults remain, but doing:

The cause for this are overlapping include masks. If this is fixed the output is ok.

[Monkey]

May I suggest giving multiblend a try? It can blend (after a fashion) images without overlap.

David

[Monkey]

Quick and dirty multiblend attempt with a handmade mask:

http://i62.tinypic.com/24b29vb.jpg