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Author Topic: Best panorama software for a flat panoramic sequence  (Read 819 times)

Guillermo Luijk

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Best panorama software for a flat panoramic sequence
« on: February 28, 2021, 06:35:52 am »

Which pano software do you think would work best for a flat panorama? i.e. a panoramic sequence obtained from a long flat wall moving the camera while trying to keep it perpendicular to the wall?

The place is a 50m long wall painted in a street with trees, cars and bikes close to the wall so it's impossible (and would also be suboptimum) to set up the camera at a fixed location and pan it around the wall:

http://guillermoluijk.com/misc/muralconcepcion.jpg

The only real drawback is that in the main area there are actually two walls shifted with respect to each other (the lower wall is closer to the camera), so it's actually a 2-panorama exercise.
This is a quick Photomerge from 14 smartphone snapshots, the errors become very apparent:

http://guillermoluijk.com/misc/muralciudadlineal.jpg

For those interested, this mural entered some political controversia recently because the City Council considered it innapropiate (most figures are left handed women who fought for the rights of women or achieved some importat goals), and wanted to eliminate it, but local neighbourhood associations demonstrated and finally the mural will remain safe.

Regards


« Last Edit: February 28, 2021, 06:40:10 am by Guillermo Luijk »
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kers

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Re: Best panorama software for a flat panoramic sequence
« Reply #1 on: February 28, 2021, 07:00:09 am »

If i understand correctly, you want use your camera as a large flatbed scanner... ?

so multiple photos with different points of view taken at the same distance and height taken from the mural....
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Pieter Kers
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Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #2 on: February 28, 2021, 07:03:04 am »

Correct. In this situation only linear stretching transformations over the images are needed, no need of reprojection (linear, cylindrical, spherical,...). It's a very straightforward case of panorama stitching, I just wonder which pano software is best at this task.

http://guillermoluijk.com/misc/frontpanorama.png

Regards
« Last Edit: February 28, 2021, 07:25:10 am by Guillermo Luijk »
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fdisilvestro

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Re: Best panorama software for a flat panoramic sequence
« Reply #3 on: February 28, 2021, 07:15:03 am »

Microsoft ICE (Image Composite Editor) has the capability of stitching “planar motion” images such as you case. It is free, so you might give it a try.

Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #4 on: February 28, 2021, 07:32:55 am »

Microsoft ICE (Image Composite Editor) has the capability of stitching “planar motion” images such as you case. It is free, so you might give it a try.

Thanks. But it doesn't seem to be available anymore, at least from MS site:

https://www.microsoft.com/en-us/research/product/computational-photography-applications/image-composite-editor/

Download ICE 2.0 -> 64-bit Windows

"We're sorry, this download is no longer available."

OK, got it from another source: https://www.dropbox.com/s/pr8czqgg2uh9lry/ICE-2.0.3-for-64-bit-Windows.msi?dl=0
Trying it.

Regards
« Last Edit: February 28, 2021, 07:46:18 am by Guillermo Luijk »
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Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #5 on: February 28, 2021, 07:51:07 am »

How strange, it detects well the images and overlaps after setting it to 1 row - 14 columns layout, but it then stitches them vertically!

http://guillermoluijk.com/misc/msicemural.jpg

Regards
« Last Edit: February 28, 2021, 07:58:49 am by Guillermo Luijk »
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Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #6 on: February 28, 2021, 12:05:18 pm »

I managed to make MS ICE work with some of the images; for some others I have manually made the composite.

http://guillermoluijk.com/misc/muralciudadlineal2.jpg

The result is still far from good but at least the portraits are fine.

If someone wants to give his own view, please find the source JPEG files here:

http://guillermoluijk.com/misc/mural.zip

Regards
« Last Edit: February 28, 2021, 12:13:25 pm by Guillermo Luijk »
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kers

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Re: Best panorama software for a flat panoramic sequence
« Reply #7 on: February 28, 2021, 05:36:22 pm »

It looks good to me... and a beautiful mural painting indeed.

As a ptGUI user...  i would try ptGUI ;)
For me it is the most flexible program around for panorama's as far as i know. It is for me one of those programs so well made that it deserves it to be learned. ( like Photoshop )
You can use different lenses , mix vertical and portrait images and even different waypoints up to some degree...
If a stitch goes wrong ; you can manually change things till it works.
In this case- treating the images as scanned images- i would manually choose a long telelens ( 2000mm) and start from there...
« Last Edit: February 28, 2021, 05:43:05 pm by kers »
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Pieter Kers
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Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #8 on: March 06, 2021, 09:51:09 am »

i would manually choose a long telelens ( 2000mm) and start from there...
I have always heard PTGUI is the best stitching software but I never tried it. Doesn't it have a native input planar projection option (eq. to focal length -> oo)? that sounds strange being the best software, there are genuine planar stitching applications around (large pieces of painting art, classical microscopy, picture scanning,...).

Regards

Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #9 on: March 08, 2021, 05:08:08 am »

I was planning to repeat the pictures with the FF camera and a tripod on a cloudy day, but it seems that is not going to happen.

Today the mural woke up painted in black:

kers

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Re: Best panorama software for a flat panoramic sequence
« Reply #10 on: March 08, 2021, 08:28:36 am »

So good you have made the photo just in time...
What's the use of This?
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Pieter Kers
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Guillermo Luijk

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Re: Best panorama software for a flat panoramic sequence
« Reply #11 on: March 08, 2021, 02:17:13 pm »

What's the use of This?
Just for fun. When looking for info. about the mural I found no quality online pictures of the entire wall, which was weird. So I thought it could be a good idea trying to document it with a reasonably high quality panorama.

Regards

Bart_van_der_Wolf

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Re: Best panorama software for a flat panoramic sequence
« Reply #12 on: March 08, 2021, 03:31:42 pm »

I have always heard PTGUI is the best stitching software but I never tried it. Doesn't it have a native input planar projection option (eq. to focal length -> oo)? that sounds strange being the best software, there are genuine planar stitching applications around (large pieces of painting art, classical microscopy, picture scanning,...).

PTGUI Pro offers that functionality, it's called "Viewpoint correction", and it allows to stitch images in a flat plane scene that were taken from different positions.
https://www.ptgui.com/examples/vptutorial.html
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