Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-19 Thread David W. Jones 
Hmm, then maybe just output mapped images, since you don't want Hugin to 
blend them anyway? Then you can blend them manually.


I don't understand the seam finding algorithms, either. For all I know, 
NONE of them use a repeatable seam.


On 12/16/2017 11:21 AM, J Harvey wrote:
Not a focus stack.  A 2 row panorama, same focal length, same exposure, 
roughly the same focus at infinity (landscape image).


The panorama output is fine.  It's just not repeatable, even with the 
exact same input files, and no changes to the .pto file. I literally 
select 'stitch' twice (exposure fused from any arrangement, optimal 
size, no resizing set in preferences, all other values to default), 
three times, four times in a row without changing any of the variables, 
and each output panorama image is different.  See the gif I posted above.


I don't understand how the algorithm works, that the same exact 
variables produce different results, unless there is some random seed 
somewhere.


What I'd like to do, is to produce panoramas with consistently matched 
pixels, so that I can manually blend differently stretched jpgs derived 
from the same RAW files.




On Saturday, December 16, 2017 at 10:11:52 PM UTC+1, GnomeNomad wrote:

Sounds like you're doing focus stacks.

This search returned a number of articles and such about doing that
with Hugin:

https://duckduckgo.com/?q=focus+stack+hugin=ftas=web



On December 15, 2017 11:40:20 PM HST, J Harvey
 wrote:

I'm not trying to produce a traditional HDR image.  I have a
panorama image with clearly defined foreground, mid ground, and
distance elements, and I'd like each region to have it's own set
of non-linear level adjustments, and consequently the sharpening
and saturation can vary between them.  There is a higher level
of variance that can be produced by producing three sets of jpgs
from the RAW images, and making 3 panoramas from each set of
images, rather than producing a middle level jpg series, making
a panorama out of that, and then stretching the panorama
independently for the foreground, mid ground, and distance.

I have one .pto file for the panorama, and three sets of images
that are named the same, in different folders.  But when I apply
the same .pto panorama parameters file, with no changes, the
output has somewhat significant spatial differences.  I could
understand if the control points varied between each set of
images, since image elements present slightly differently with
different levels and sharpening, but I'm using the same set of
control points.

In fact, just running the same .pto file subsequently with
different images gives me different results.  It's like there's
a stochastic element to the panorama creation, it doesn't
produce the same results, consistently, given the same inputs- I
can't reproduce the same panoramas.

Linux, Hugin
Version: 2015.0.0.cdefc6e53a58

On Saturday, December 16, 2017 at 5:05:40 AM UTC+1, Tduell wrote:

On Sat, 16 Dec 2017 13:59:10 +1100, J Harvey

wrote:

 > I am trying to manually create a HDR or mixed exposure
image.  I want to
 > stitch 8 image together with three different exposure and
sharpening
 > settings.
 >
[snip]

I may not have understood why you are using the approach you
describe, and
wonder why you are not loading all the images and using
stacks to get your
HDR.

Cheers,
-- 
Regards,

Terry Duell



--
David W. Jones
gnomeno...@gmail.com
wandering the landscape of god
http://dancingtreefrog.com

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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-16 Thread J Harvey 
Not a focus stack.  A 2 row panorama, same focal length, same exposure, 
roughly the same focus at infinity (landscape image).  

The panorama output is fine.  It's just not repeatable, even with the exact 
same input files, and no changes to the .pto file. I literally select 
'stitch' twice (exposure fused from any arrangement, optimal size, no 
resizing set in preferences, all other values to default), three times, 
four times in a row without changing any of the variables, and each output 
panorama image is different.  See the gif I posted above.

I don't understand how the algorithm works, that the same exact variables 
produce different results, unless there is some random seed somewhere.

What I'd like to do, is to produce panoramas with consistently matched 
pixels, so that I can manually blend differently stretched jpgs derived 
from the same RAW files.



On Saturday, December 16, 2017 at 10:11:52 PM UTC+1, GnomeNomad wrote:
>
> Sounds like you're doing focus stacks.
>
> This search returned a number of articles and such about doing that with 
> Hugin:
>
> https://duckduckgo.com/?q=focus+stack+hugin=ftas=web
>
>
> On December 15, 2017 11:40:20 PM HST, J Harvey  > wrote:
>>
>> I'm not trying to produce a traditional HDR image.  I have a panorama 
>> image with clearly defined foreground, mid ground, and distance elements, 
>> and I'd like each region to have it's own set of non-linear level 
>> adjustments, and consequently the sharpening and saturation can vary 
>> between them.  There is a higher level of variance that can be produced by 
>> producing three sets of jpgs from the RAW images, and making 3 panoramas 
>> from each set of images, rather than producing a middle level jpg series, 
>> making a panorama out of that, and then stretching the panorama 
>> independently for the foreground, mid ground, and distance.  
>>
>> I have one .pto file for the panorama, and three sets of images that are 
>> named the same, in different folders.  But when I apply the same .pto 
>> panorama parameters file, with no changes, the output has somewhat 
>> significant spatial differences.  I could understand if the control points 
>> varied between each set of images, since image elements present slightly 
>> differently with different levels and sharpening, but I'm using the same 
>> set of control points.  
>>
>> In fact, just running the same .pto file subsequently with different 
>> images gives me different results.  It's like there's a stochastic element 
>> to the panorama creation, it doesn't produce the same results, 
>> consistently, given the same inputs- I can't reproduce the same panoramas.
>>
>> Linux, Hugin
>> Version: 2015.0.0.cdefc6e53a58
>>
>> On Saturday, December 16, 2017 at 5:05:40 AM UTC+1, Tduell wrote:
>>>
>>> On Sat, 16 Dec 2017 13:59:10 +1100, J Harvey    
>>> wrote: 
>>>
>>> > I am trying to manually create a HDR or mixed exposure image.  I want 
>>> to 
>>> > stitch 8 image together with three different exposure and sharpening 
>>> > settings. 
>>> > 
>>> [snip] 
>>>
>>> I may not have understood why you are using the approach you describe, 
>>> and   
>>> wonder why you are not loading all the images and using stacks to get 
>>> your   
>>> HDR. 
>>>
>>> Cheers, 
>>> -- 
>>> Regards, 
>>> Terry Duell 
>>>
>>
> David W. Jones
> gnome...@gmail.com 
> wandering the landscape of god
> http://dancingtreefrog.com
>
> Sent from my Android device with K-9 Mail.
>

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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-16 Thread David W. Jones 
Sounds like you're doing focus stacks.

This search returned a number of articles and such about doing that with Hugin:

https://duckduckgo.com/?q=focus+stack+hugin=ftas=web


On December 15, 2017 11:40:20 PM HST, J Harvey  
wrote:
>I'm not trying to produce a traditional HDR image.  I have a panorama
>image 
>with clearly defined foreground, mid ground, and distance elements, and
>I'd 
>like each region to have it's own set of non-linear level adjustments,
>and 
>consequently the sharpening and saturation can vary between them. 
>There is 
>a higher level of variance that can be produced by producing three sets
>of 
>jpgs from the RAW images, and making 3 panoramas from each set of
>images, 
>rather than producing a middle level jpg series, making a panorama out
>of 
>that, and then stretching the panorama independently for the
>foreground, 
>mid ground, and distance.  
>
>I have one .pto file for the panorama, and three sets of images that
>are 
>named the same, in different folders.  But when I apply the same .pto 
>panorama parameters file, with no changes, the output has somewhat 
>significant spatial differences.  I could understand if the control
>points 
>varied between each set of images, since image elements present
>slightly 
>differently with different levels and sharpening, but I'm using the
>same 
>set of control points.  
>
>In fact, just running the same .pto file subsequently with different
>images 
>gives me different results.  It's like there's a stochastic element to
>the 
>panorama creation, it doesn't produce the same results, consistently,
>given 
>the same inputs- I can't reproduce the same panoramas.
>
>Linux, Hugin
>Version: 2015.0.0.cdefc6e53a58
>
>On Saturday, December 16, 2017 at 5:05:40 AM UTC+1, Tduell wrote:
>>
>> On Sat, 16 Dec 2017 13:59:10 +1100, J Harvey > >   
>> wrote: 
>>
>> > I am trying to manually create a HDR or mixed exposure image.  I
>want to 
>> > stitch 8 image together with three different exposure and
>sharpening 
>> > settings. 
>> > 
>> [snip] 
>>
>> I may not have understood why you are using the approach you
>describe, and 
>>   
>> wonder why you are not loading all the images and using stacks to get
>your 
>>   
>> HDR. 
>>
>> Cheers, 
>> -- 
>> Regards, 
>> Terry Duell 
>>
>
>-- 
>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.
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>For more options, visit https://groups.google.com/d/optout.

David W. Jones
gnomeno...@gmail.com
wandering the landscape of god
http://dancingtreefrog.com

Sent from my Android device with K-9 Mail.

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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-16 Thread Sean Greenslade 
On December 16, 2017 5:22:08 AM PST, J Harvey  
wrote:
>Lets see if this works. 
>
>I opened a saved .pto, and ran stitch three times without changing 
>anything, and it produced three different images.
>
>
> 
>
>>  
>>
>>

Enblend has the --save-masks and --load-masks option so that you can reuse the 
same source masks across different blends. But even so, I believe the actual 
blending seam (and seam width) is still driven by analysis of the input images, 
so I'm not sure if it's possible to get the same exact stitch with different 
image files.

--Sean

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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-16 Thread Marius Loots 
Title: Re: [hugin-ptx] Output changes using same saved .pto file


Hello All,

I have experienced the same problem. It relates to how nona, enfuse or enblend select the areas which is to be merged. 
Can't remember at the moment exactly where the issue was. I revert to the 2012 version of hugin when I encounter this. 
I will see if I can where exactly the change came. You can use masks to make each blend line the same for the same pto,
but it was too much of a pain and easier to revert. 


-- 
Best regards,
Marius Loots



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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-16 Thread J Harvey 
I'm not trying to produce a traditional HDR image.  I have a panorama image 
with clearly defined foreground, mid ground, and distance elements, and I'd 
like each region to have it's own set of non-linear level adjustments, and 
consequently the sharpening and saturation can vary between them.  There is 
a higher level of variance that can be produced by producing three sets of 
jpgs from the RAW images, and making 3 panoramas from each set of images, 
rather than producing a middle level jpg series, making a panorama out of 
that, and then stretching the panorama independently for the foreground, 
mid ground, and distance.  

I have one .pto file for the panorama, and three sets of images that are 
named the same, in different folders.  But when I apply the same .pto 
panorama parameters file, with no changes, the output has somewhat 
significant spatial differences.  I could understand if the control points 
varied between each set of images, since image elements present slightly 
differently with different levels and sharpening, but I'm using the same 
set of control points.  

In fact, just running the same .pto file subsequently with different images 
gives me different results.  It's like there's a stochastic element to the 
panorama creation, it doesn't produce the same results, consistently, given 
the same inputs- I can't reproduce the same panoramas.

Linux, Hugin
Version: 2015.0.0.cdefc6e53a58

On Saturday, December 16, 2017 at 5:05:40 AM UTC+1, Tduell wrote:
>
> On Sat, 16 Dec 2017 13:59:10 +1100, J Harvey  >   
> wrote: 
>
> > I am trying to manually create a HDR or mixed exposure image.  I want to 
> > stitch 8 image together with three different exposure and sharpening 
> > settings. 
> > 
> [snip] 
>
> I may not have understood why you are using the approach you describe, and 
>   
> wonder why you are not loading all the images and using stacks to get your 
>   
> HDR. 
>
> Cheers, 
> -- 
> Regards, 
> Terry Duell 
>

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Re: [hugin-ptx] Output changes using same saved .pto file

2017-12-15 Thread Terry Duell 
On Sat, 16 Dec 2017 13:59:10 +1100, J Harvey   
wrote:



I am trying to manually create a HDR or mixed exposure image.  I want to
stitch 8 image together with three different exposure and sharpening
settings.


[snip]

I may not have understood why you are using the approach you describe, and  
wonder why you are not loading all the images and using stacks to get your  
HDR.


Cheers,
--
Regards,
Terry Duell

--
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