Aligning / remapping a series of photos

[boomslang]

Hi all,


I have a series of photos that I would like to align and remap. The photos are taken without a tripod. I would like to obtain for each photo a transformed new image, all sized 4000 x 3000 pixels, such that all new images are aligned. No other image operations (exposure or color correction), are necessary.

I tried in Hugin to play around with the 'Remapped Images' tick boxes in the 'Stitcher' tab, but I wasn't successful yet. I do get remapped images, but they are all exposure corrected etc and are all of different sizes.

Anyone has any ideas? Help is much appreciated.


Kind regards

[Sean Greenslade]

I'm not really sure what you're going for, here. Could you explain what
you're trying to achieve more clearly?

The output of the "remapped images" is a set of intermediary images. How
they are warped / sized / corrected is dependent on the settings of the
final panoramic output.

--Sean

[boomslang]

Hi Sean,


thanks for your response and sorry if I didnt make myself clear.

What I mean is that I am interested in the warped intermediate files and not in a final panorama photo. The intermediate files should all be of the same size and aligned, such that corresponding objects in the photos are at the same position etc. (Note that all photos are of the same scenery...) Also, the intermediate files should not be corrected wrt exposure or colors etc.

See it as a kind of 'image stabilization' of a time series of images.

I hope i made myself clear now.

Thanks again for any help,

Kind regards

boomslang

--------------------------------------------
On Wed, 9/12/15, Sean Greenslade <se...@seangreenslade.com> wrote:

Subject: Re: [hugin-ptx] Aligning / remapping a series of photos
To: "'boomslang' via hugin and other free panoramic software" <hugi...@googlegroups.com>
Date: Wednesday, 9 December, 2015, 19:03

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[Terry Duell]

Hello boomslang,

On Fri, 11 Dec 2015 08:38:40 +1100, 'boomslang' via hugin and other free
panoramic software <hugi...@googlegroups.com> wrote:

> Hi Sean,
>
>
> thanks for your response and sorry if I didnt make myself clear.
>
> What I mean is that I am interested in the warped intermediate files and
> not in a final panorama photo. The intermediate files should all be of
> the same size and aligned, such that corresponding objects in the photos
> are at the same position etc. (Note that all photos are of the same
> scenery...) Also, the intermediate files should not be corrected wrt
> exposure or colors etc.
>

You should be able to do this by first ensuring that in your Preferences >
Programs, Nona does NOT have "Create cropped images by default" ticked.
Create your control points and optimise, then in the Stitcher tab set your
Canvas Size and tick only "Remapped images: No exposure correction, low
dynamic range".

If that doesn't solve your problem, let's know with details.

Cheers,
--
Regards,
Terry Duell

[boomslang]

Hi Terry,


Thanks for your pointers! I got now indeed the aligned, warped and resized images. The only thing is that some images are still slightly changed wrt exposure/colors, especially some images lost contrast.

Any ideas? I got the --no-ciecam option set for enblend as default...

Thanks again for your help.

kind regards,

boomslang


--------------------------------------------

On Thu, 10/12/15, Terry Duell <tdu...@iinet.net.au> wrote:

Subject: Re: [hugin-ptx] Aligning / remapping a series of photos

To: hugi...@googlegroups.com
Date: Thursday, 10 December, 2015, 22:57

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[Terry Duell]

Hello boomslang,

On Fri, 11 Dec 2015 10:39:01 +1100, 'boomslang' via hugin and other free
panoramic software <hugi...@googlegroups.com> wrote:

> Hi Terry,
>
>
> Thanks for your pointers! I got now indeed the aligned, warped and
> resized images. The only thing is that some images are still slightly
> changed wrt exposure/colors, especially some images lost contrast.
>
> Any ideas? I got the --no-ciecam option set for enblend as default...
>

No good ones.
Which version of enblend?
Try without the --no-ciecam, if you haven't already.
Also, try Multiblend, if you haven't already.
I don't recall which version of Hugin you are using. If it is 2015.0.0,
you could also try the builtin blender, which you can choose in the
Stitcher tab, under "Processing: Blender:", the menu should offer enblend
or builtin.
Also, what result do you get if you choose "Remapped Images: Exposure
corrected, low dynamic range" in the Stitcher tab?
A few things to try, and maybe someone else who understands more than me
can elaborate on the possible cause(s) of exposure changes when "No
exposure correction" has been selected.

[panostar]

On Friday, December 11, 2015 at 1:21:34 AM UTC, Tduell wrote:

Which version of enblend?
Try without the --no-ciecam, if you haven't already.
Also, try Multiblend, if you haven't already.

Why?  He just wants the remapped images.  A blended output is not required so that option should be unchecked.

John 

[Terry Duell]

Hello John,

On Fri, 11 Dec 2015 18:57:50 +1100, panostar <houghto...@gmail.com>
wrote:

Why indeed. Not sure what I was thinking.
Thanks for the correction.

[Bruno Postle]

On 10 December 2015 23:39:01 GMT+00:00, 'boomslang' wrote:
>
>Thanks for your pointers! I got now indeed the aligned, warped and
>resized images. The only thing is that some images are still slightly
>changed wrt exposure/colors, especially some images lost contrast.

With a stack of photos you shouldn't be optimising vignetting and camera response, as this doesn't work so well in this situation. You can reset these values in the project and render the output again.

--
Bruno

[boomslang]

Hi Bruno,


do I reset the vignetting and camera response via the Photos tab and then right click on the images and choose 'Edit image variables'? Is that what you mean?

Kind regards,

boomslang


--------------------------------------------

On Fri, 11/12/15, Bruno Postle <br...@postle.net> wrote:

Subject: Re: [hugin-ptx] Aligning / remapping a series of photos
To: hugi...@googlegroups.com

Date: Friday, 11 December, 2015, 10:18

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[Bruno Postle]

On 12 December 2015 11:56:49 GMT+00:00, 'boomslang' wrote:
>
>do I reset the vignetting and camera response via the Photos tab and
>then right click on the images and choose 'Edit image variables'? Is
>that what you mean?

There should be a 'reset photometric' option, though you can also edit the variables and set then to zero.

--
Bruno
--
Bruno

[boomslang]

Thanks Sean, Terry and Bruno for helping me out. I think I got it working now.

kind regards



--------------------------------------------

On Sun, 13/12/15, Bruno Postle <br...@postle.net> wrote:

Subject: Re: [hugin-ptx] Aligning / remapping a series of photos
To: hugi...@googlegroups.com

Date: Sunday, 13 December, 2015, 9:48

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