Re: [hugin-ptx] Shooting and stitching to make Giclee prints

[Terry Duell]

Hello Paul,

On Sun, 08 Nov 2015 00:05:09 +1100, Paul Womack   
wrote:



Pardon my dumbness; it's seems (from the thread) you're talking about
shooting a mosaic style set; in this context what is a  "2x2 pattern"
(since I suspect the full matrix will be more 8x13 images or whatever).



Yes, it will be shot in mosaic mode.
The 2x2 pattern is simply 2 rows, 2 columns, 4 shots in total.


Second - how big is the physical painting?


The painting is 760x560mm.

Cheers,
--
Regards,
Terry Duell

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

On Saturday, 7 November 2015 18:51:56 UTC, Gerald wrote:
>
> Is it the same Rex as the one under OS/2?
>

There are several implementations (all support the ANSI Standard Rexx, I 
think).  The open object Rexx (ooRexx) that is the current open source/free 
version is, indeed, based on the OS/2 Object Rexx ... but much enhanced 
from that. 

Perhaps more to the point of this thread is that Rexx was designed to 
process strings in order to create "commands", which is exactly what is 
required for the commands that Hugin/panotools expect.  

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

>
>
> see http://wiki.panotools.org/Panorama_scripting_in_a_nutshell
> This file is also contained in Hugins help file.
>

Perfect -- thanks.  

As mentioned, I didn't find anything like that when searching; maybe worth 
'highlighting' in some way? 

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Re: [hugin-ptx] Alignment of multi-row images

[T. Modes]

Am Samstag, 7. November 2015 19:44:47 UTC+1 schrieb Mike Cowlishaw:
>
> OK .. many thanks; will try those soon (not tomorrow).   Is there an 
> overview of hugin commands, like those, somewhere?   I googled and browsed 
> for some time and did not come across 'hugin_executor',as far as I recall.


see http://wiki.panotools.org/Panorama_scripting_in_a_nutshell
This file is also contained in Hugins help file. 

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Re: [hugin-ptx] Alignment of multi-row images

[Gerald Brosseau]

Is it the same Rex as the one under OS/2?


Le 2015-11-07 13:01, Mike Cowlishaw a écrit :



On Saturday, 7 November 2015 17:29:10 UTC, bugbear wrote:

What (on earth) is your Hugin installed on, such that Rex
is your scripting language of choice?!


Windows.  But it is also my scripting language of choice on Linux. 
 After all, I created Rex[x] :-).


Mike
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--
Gérald Brosseau
La Photo Du Jour
(www.gb-photodujour.com)
Sur internet depuis 1998

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

On Saturday, 7 November 2015 18:37:19 UTC, T. Modes wrote:
>
>
>
> Am Samstag, 7. November 2015 13:45:39 UTC+1 schrieb Mike Cowlishaw:
>>
>> 
>>
>  
>
>> -- add missing control points using geometry
>> 'geocpset --output='profile profile
>>
>> -- done
>> say
>> say 'Starting Hugin.  Open' profile', Align, 
>>
>
> this can also be achieved from the command line: hugin_executor 
> --assistant ..
>  
>
>> and Generate Panorama'
>>
>
> same here: hugin_executor --stitching … 
>  
>
> OK .. many thanks; will try those soon (not tomorrow).   Is there an 
overview of hugin commands, like those, somewhere?   I googled and browsed 
for some time and did not come across 'hugin_executor',as far as I recall.

>  
>

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Re: [hugin-ptx] Alignment of multi-row images

[T. Modes]

Am Samstag, 7. November 2015 13:45:39 UTC+1 schrieb Mike Cowlishaw:
>
> 
>
 

> -- add missing control points using geometry
> 'geocpset --output='profile profile
>
> -- done
> say
> say 'Starting Hugin.  Open' profile', Align, 
>

this can also be achieved from the command line: hugin_executor --assistant 
..
 

> and Generate Panorama'
>

same here: hugin_executor --stitching … 
 

 

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

On Saturday, 7 November 2015 17:29:10 UTC, bugbear wrote:
>
> What (on earth) is your Hugin installed on, such that Rex
> is your scripting language of choice?!
>

Windows.  But it is also my scripting language of choice on Linux.  After 
all, I created Rex[x] :-).  

Mike 

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Re: [hugin-ptx] Alignment of multi-row images

[Paul Womack]

What (on earth) is your Hugin installed on, such that Rex
is your scripting language of choice?!

 BugBear

On 7 November 2015 at 12:45, Mike Cowlishaw  wrote:


>> Ah!!  That works perfectly!   Very many thanks.   Presumably I can add
>> that step to the script by calling cpfind  again (with --prealigned?) ?
>>
>
> Ignore that last question .. I see that won't work.
>
> Here, as promised, is the script I put together.  Plenty of room for
> improvement...
>
> /* --- */
> /* huginpan.rex --- run Hugin with layout hints*/
> /* --- */
>
>

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Re: [hugin-ptx] Shooting and stitching to make Giclee prints

[Paul Womack]

Pardon my dumbness; it's seems (from the thread) you're talking about
shooting a mosaic style set; in this context what is a  "2x2 pattern"
(since I suspect the full matrix will be more 8x13 images or whatever).

Second - how big is the physical painting?

  BugBear

On 4 November 2015 at 23:56, Terry Duell  wrote:

> Hello All,
> I have become involved in a project to help an artist friend prepare an
> image of a painting to be used to make giclee prints, and I'm looking for
> any thoughts on what I should do to get it right and what to avoid.
> To date, my friend has had his paintings photographed commercially, with a
> medium to large format film camera, the transparency then scanned on a drum
> scanner to produce an image that would print at original size at 300 ppi.
> I'll be shooting with a Pentax K-3 II (aps-c sensor), and aim to shoot a
> 2x2 pattern with about 30% overlap vertically and about 50% overlap
> horizontally...that's roughly how it works out from the painting and sensor
> proportions.
> I'll shoot from a weighted tripod, using pixel shift mode, and at this
> stage thinking about using a 150-450 lens at about 300mm.
> The intention is to set the painting vertical on a stand, with lighting
> each side at about 45 deg.
> It is a simple matter to set the camera at the correct height shooting
> horizontally, but not quite as simple to ensure we are normal to the
> painting in the horizontal plane. I would like to try to minimise any
> perspective effects as much as possible. The thinking at the moment is to
> move the painting vertically and horizontally on a fixed easel to align for
> each shot, rather than move the camera. I think we can better keep the
> shots normal to the painting by this method.
> That's probably enough to be going on with...any thoughts?
>
> Cheers,
> --
> Regards,
> Terry Duell
>
> --
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Re: [hugin-ptx] Alignment of multi-row images

[T. Modes]

Am Samstag, 7. November 2015 12:01:00 UTC+1 schrieb Mike Cowlishaw:
>
> Just tried running my script for just the pto_gen and pto_var commands, 
> then opening the .pto with Hugin, running Align, saving, running the 
> geocpset command, opening the .pto again, and stitching.
>
> This runs without errors, but the result is truly awful -- even 'easy' 
> bits such as the car is not stitched correctly.
>

After geocpset and opening the pto file again you need to optimize the 
position and photometric parameters to get the final result. (Do it 
manually on the photos tab or press align again)
Otherwise only rough position from pto_var are used.

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

Just tried running my script for just the pto_gen and pto_var commands, 
then opening the .pto with Hugin, running Align, saving, running the 
geocpset command, opening the .pto again, and stitching.

This runs without errors, but the result is truly awful -- even 'easy' bits 
such as the car is not stitched correctly.

So I am somewhat discouraged -- wondering if anyone else can get this to 
work.

Mike

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

>
>
> The errors are of the form:
>>
>>   i7 : Analyzing image...
>>   An error happened while loading image : caught exception: bad allocation
>>
>
> You are using the 64 bit version? (If you are using the 32 bit version, 
> try the 64 bit version.)
>

I believe so -- I only have the 64-bit installer .exe, but About Hugin 
doesn't say either way.
 

>
> You could try to limit the number of threads with
> SET OMP_NUM_THREADS=4
> (before running cpfind)
> to reduce the memory usage.
> (I have seen this error only when there is memory shortage in case of many 
> threads.)
>

That didn't help.   The odd thing is that these errors do not occur when 
cpfind is run from the Hugin assistant ('Align').



 

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[hugin-ptx] Automating from pto to a layered tiff_m on the Mac OSX command line?

[Ed Halley]

I'm on the Mac (Mavericks) so I think the 2014 build of Hugin is all I can 
run at this time.

I'm interested in producing panoramas using the layered TIFF_m format, 
because I like doing most of the blending manually to deal with pedestrians 
or other conflicts.  As an alternative, I would want at least individual 
layers with appropriate empty alpha area so that they will align if loaded 
into an image editor.

With some other automation or pre-calibration, I can already generate the 
.PTO file that I want, with all my image orientation and distortion 
parameters already entered.

I'd like to understand how to send the .PTO file to the PTBatcher queue, or 
otherwise automate all the layer rendering steps from the command line.

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Re: [hugin-ptx] Alignment of multi-row images

[T. Modes]

Am Samstag, 7. November 2015 09:58:36 UTC+1 schrieb Mike Cowlishaw:
>
> The errors are of the form:
>
>   i7 : Analyzing image...
>   An error happened while loading image : caught exception: bad allocation
>

You are using the 64 bit version? (If you are using the 32 bit version, try 
the 64 bit version.)

You could try to limit the number of threads with
SET OMP_NUM_THREADS=4
(before running cpfind)
to reduce the memory usage.
(I have seen this error only when there is memory shortage in case of many 
threads.)

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Re: [hugin-ptx] Alignment of multi-row images

[Mike Cowlishaw]

Hi, yes, the commands look good -- it is the errors that seem to be causing
the problems.  Sometimes (with the same set of images) there are only one
or two error messages, and the result then is OK.

The errors are of the form:

  i7 : Analyzing image...
  An error happened while loading image : caught exception: bad allocation

Mike

On Fri, Nov 6, 2015 at 10:19 PM, Terry Duell  wrote:

> Hello Mike,
>
> On Sat, 07 Nov 2015 02:24:32 +1100, Mike Cowlishaw 
> wrote:
>
> [Last post had wrong command copy .. retry...]
>>
>>
>> Many thanks for that.  Making progress :-).   My script generates the
>> correct commands, I think:
>>
>>   pto_gen -o project.pto p*.jpg
>>   pto_var
>> "--set=y=(floor(i/6)*13.5719189)-20.3578783,p=25.5922968-(i%6)*10.2369187"
>> --output=project.pto project.pto
>>   cpfind --output=project.pto --prealigned project.pto
>>   geocpset --output=project.pto project.pto
>>
>>
>> but the cpfind command gives the following errors (varies according to
>> the run):
>>
>
> One thing I do when first writing scripts like this is to have each step
> generate a new .pto file, then when it's done you can load each one in turn
> into Hugin and see if it has done what you want.
>
> Cheers,
> --
> Regards,
> Terry Duell
>
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