Re: [hugin-ptx] Re: cpfind - no control points on large images

[dgjohnston]

> On Aug 31, 2017, at 11:37 AM, T. Modes  wrote:
> 
> 
> 
> Am Mittwoch, 30. August 2017 21:27:25 UTC+2 schrieb Donald Johnston:
> Am I missing an image size limitation? I tried searching for this but can’t 
> find anything.
> 
> It was a bug. It should be fixed now in repository. 
> As a workaround for the time being increase the ransac threshold distance to 
> e.g. 100 pixel for bigger images (add --ransacdist=100 to cpfind command line 
> parameters).

I added in the ransacdist parameter and put in the two images at full 
resolution (7360x4912 - 36.3 MB) and it worked great!

Thanks Thomas.
Don J.

> 
> 
> -- 
> A list of frequently asked questions is available at: 
> http://wiki.panotools.org/Hugin_FAQ 
> --- 
> You received this message because you are subscribed to the Google Groups 
> "hugin and other free panoramic software" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to hugin-ptx+unsubscr...@googlegroups.com 
> .
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/hugin-ptx/26aed315-cace-478d-bb0b-645e4a4e822a%40googlegroups.com
>  
> .
> For more options, visit https://groups.google.com/d/optout 
> .

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/8AB51774-4F69-4F0C-B18F-48AF0588F794%40accesscomm.ca.
For more options, visit https://groups.google.com/d/optout.

[hugin-ptx] Re: cpfind - no control points on large images

[T. Modes]

Am Mittwoch, 30. August 2017 21:27:25 UTC+2 schrieb Donald Johnston:
>
> Am I missing an image size limitation? I tried searching for this but 
> can’t find anything.
>

It was a bug. It should be fixed now in repository. 
As a workaround for the time being increase the ransac threshold distance 
to e.g. 100 pixel for bigger images (add --ransacdist=100 to cpfind command 
line parameters). 

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/26aed315-cace-478d-bb0b-645e4a4e822a%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[hugin-ptx] Hugin - Build for android ndk

[Abrimaal]

If ever it happens. Maybe a marginal detail, but very important when working 
with photos on Android and PC.
Please respect the filenames when saving. The most of Android apps save files 
with random names. There are only a few exceptions that append a suffix to the 
original filename.

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/24fd890f-6fdf-4a98-b4a0-2b5b93492846%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: [hugin-ptx] Re: Simple rotation/translation stitching

[Roger Broadie]

Adding all control-points by hand hardly bears thinking about.  I
often have to add some, but I think I have always had at least a
substratum of automatically generated cps.  My problem with old maps
is not the one you mention.  Rather, it is that they are often faded
and photographed in low-level lighting and thus rather indistinct,
which can defeat automatic systems, though the human eye is prepared
to make a judgment about the best correspondence.  And sometimes there
are features like bushes along field boundaries that are
conventionally spaced and mislead the cp finder.

But these considerations should apply less to scanned images and I
didn't need to add any to the example I showed of an old(ish) map of
the Ipswich area.  Rather, I had to prune a few that CP Find had
delivered.  Admittedly, I had helped it by getting the constituent
images roughly into position by hand before invoking it.

Roger

On 30 August 2017 at 09:38, bugbear  wrote:
> Roger Broadie wrote:
>
>> Of course, long linear features can offer control-point detectors
>> difficulties if there are no distinguishing details on or near them. But in
>> the case of your image showing the discontinuities the seam clearly passes
>> near or even through plot numbers and they should give control-point
>> detectors something to bite on.  Thus you could try dragging a rectangle
>> around them and selecting that great standby "create control points here":
>> see e.g.
>
>
> I often (ish) use my camera and a pano head as a substitute for the A0
> scanner I don't own, usually
> for maps and newspapers.
>
> In both cases I do NOT use automatically generated CPs. There is so much
> fine scale
> repetition in text (all the printed characters are identical) and a map
> (symbols, text again)
> that false hits are inevitable.
>
> For truly large items, I don't use a pano head, but move the entire tripod
> and camera over
> the item, grid-fashion. This is laborious to do, and laborious in hugin too.
>
>  BugBear
>
> --
> A list of frequently asked questions is available at:
> http://wiki.panotools.org/Hugin_FAQ
> --- You received this message because you are subscribed to the Google
> Groups "hugin and other free panoramic software" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to hugin-ptx+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/hugin-ptx/59A6798D.9080006%40papermule.co.uk.
>
> For more options, visit https://groups.google.com/d/optout.

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/CAHQACerfCKoVr4_4-cN3Ca%3DGkVu%2BYk4rEJsqChrUnBEGUTXqPg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

[hugin-ptx] cpfind bug confirmed (was: no control points on large images)

[Greg 'groggy' Lehey]

On Wednesday, 30 August 2017 at 19:17:57 -0600, dgjohnston wrote:
>
>> On Aug 30, 2017, at 6:15 PM, Greg 'groggy' Lehey  wrote:
>>
>> On Wednesday, 30 August 2017 at 13:27:20 -0600, dgjohnston wrote:
>>> Hi, I running hugin as follows:
>>> 2017.0.0.eac5e8cc546e built by Niklas Mischkulnig
>>> MacBook Pro, macOS Sierra 10.12.6 with 8GB memory
>>>
>>> When I load in large images cpfind doesn???t generate any control
>>> points and I get an error message about ???Warning 2 unconnected
>>> image groups found:[0], [1]???
>>
>> It's difficult to tell without seeing the images.  Can you post them
>> somewhere (thanks for not including them in your mail message).
>
> I didn???t want to put images up at first in case I was missing
> something obvious. Here is a link to the images on dropbox. They are
> the same two images but one set (5000 wide) works and the other
> (7000 wide) doesn???t work.
> https://www.dropbox.com/sh/9o35ps53i5r8cvj/AADg-9bdH8BoKOhKDZmLKgjUa?dl=0
> 

OK, I've taken a look at the two "Fails" images, and yes, cpfind fails
silently for me too.  I tried it with panomatic, and that works.  I've
stitched an 81 MP panorama from them, which you can find at
http://www.lemis.com/grog/tmp/Fails.jpeg

So yes, it looks as if this is a bug with cpfind.  For the time being
you can work around it by using panomatic.

Greg
--
Sent from my desktop computer.
Finger groog...@gmail.com for PGP public key.
See complete headers for address and phone numbers.
This message is digitally signed.  If your Microsoft mail program
reports problems, please read http://lemis.com/broken-MUA

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/20170831062705.GN15380%40eureka.lemis.com.
For more options, visit https://groups.google.com/d/optout.


signature.asc
Description: PGP signature